diff --git a/res/drawable-night/accessibility_button_preview_base.xml b/res/drawable-night/accessibility_button_preview_base.xml
new file mode 100644
index 0000000..a5b0bfa
--- /dev/null
+++ b/res/drawable-night/accessibility_button_preview_base.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M384.2,300H27.8C12.5,300 0,287.2 0,271.5v-243C0,12.8 12.5,0 27.8,0h356.5C399.5,0 412,12.8 412,28.5v243.2C412,287.2 399.5,300 384.2,300z"/>
+  <path
+      android:pathData="M325.4,231.9c0,9.8 -7.9,17.7 -17.7,17.7H103.9c-9.8,0 -17.7,-7.9 -17.7,-17.7V0h-4.4v231.9c0,12.2 9.9,22.2 22.1,22.2h203.8c12.2,0 22.1,-9.9 22.1,-22.2V14.8c2.4,0 4.4,-2 4.4,-4.4V0h-8.9L325.4,231.9L325.4,231.9z"
+      android:fillColor="#808589"/>
+</vector>
diff --git a/res/drawable-night/accessibility_button_preview_large_floating_menu.xml b/res/drawable-night/accessibility_button_preview_large_floating_menu.xml
new file mode 100644
index 0000000..74ecbfc
--- /dev/null
+++ b/res/drawable-night/accessibility_button_preview_large_floating_menu.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
+    <path
+        android:pathData="M325.4,198.2h-40.9c-22.1,0 -40,-18 -40,-40s18,-40 40,-40h40.9v2.6h-40.9c-20.7,0 -37.5,16.8 -37.5,37.5s16.8,37.5 37.5,37.5h40.9V198.2z"
+        android:fillColor="#808589"/>
+    <path
+        android:pathData="M284.3,128.4c-16.5,0 -29.8,13.4 -29.8,29.8c0,16.5 13.4,29.8 29.8,29.8s29.8,-13.4 29.8,-29.8C314.2,141.7 300.9,128.4 284.3,128.4zM284.3,142.7c1.7,0 3.1,1.4 3.1,3.1c0,1.7 -1.4,3.1 -3.1,3.1s-3.1,-1.4 -3.1,-3.1C281.2,144.1 282.7,142.7 284.3,142.7zM289.1,153.7V174H286v-9.4h-3.1v9.4h-3.2v-20.3c-3.1,-0.3 -6.5,-0.8 -9.4,-1.5l0.8,-3.1c4.1,1 8.9,1.5 13.3,1.5s9.2,-0.5 13.3,-1.5l0.8,3.1C295.6,152.9 292.2,153.4 289.1,153.7z"
+        android:fillColor="#D9DBDF"/>
+</vector>
diff --git a/res/drawable-night/accessibility_button_preview_small_floating_menu.xml b/res/drawable-night/accessibility_button_preview_small_floating_menu.xml
new file mode 100644
index 0000000..4226086
--- /dev/null
+++ b/res/drawable-night/accessibility_button_preview_small_floating_menu.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
+    <path
+        android:pathData="M325.4,189.2h-31.7c-17.1,0 -31,-13.9 -31,-31s13.9,-31 31,-31h31.7v2h-31.7c-16,0 -29,13 -29,29s13,29 29,29h31.7V189.2z"
+        android:fillColor="#808589"/>
+    <path
+        android:pathData="M293.6,135.1c-12.8,0 -23.1,10.4 -23.1,23.1c0,12.8 10.4,23.1 23.1,23.1s23.1,-10.4 23.1,-23.1C316.7,145.4 306.4,135.1 293.6,135.1zM293.6,146.2c1.3,0 2.4,1.1 2.4,2.4s-1.1,2.4 -2.4,2.4s-2.4,-1.1 -2.4,-2.4S292.3,146.2 293.6,146.2zM297.3,154.7v15.7h-2.4v-7.3h-2.4v7.3H290v-15.7c-2.4,-0.2 -5,-0.6 -7.3,-1.2l0.6,-2.4c3.2,0.8 6.9,1.2 10.3,1.2s7.1,-0.4 10.3,-1.2l0.6,2.4C302.3,154.1 299.7,154.5 297.3,154.7z"
+        android:fillColor="#D9DBDF"/>
+</vector>
diff --git a/res/drawable-night/accessibility_button_preview_three_finger.xml b/res/drawable-night/accessibility_button_preview_three_finger.xml
new file mode 100644
index 0000000..7afb0f7
--- /dev/null
+++ b/res/drawable-night/accessibility_button_preview_three_finger.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M384.2,300H27.8C12.5,300 0,287.2 0,271.5v-243C0,12.8 12.5,0 27.8,0h356.5C399.5,0 412,12.8 412,28.5v243.2C412,287.2 399.5,300 384.2,300z"/>
+  <path
+      android:pathData="M242.5,226.9h-73.3c-1.7,0 -3.1,1.4 -3.1,3.1s1.4,3.1 3.1,3.1h73.3c1.7,0 3.1,-1.4 3.1,-3.1S244.2,226.9 242.5,226.9z"
+      android:fillColor="#80868B"/>
+  <path
+      android:pathData="M182.7,222.6v-17.5h7.5l-10.6,-18.7l-10.6,18.7h7.5v17.5c-2.9,1.2 -4.9,4 -4.9,7.4c0,4.4 3.5,8 8,8c4.4,0 8,-3.5 8,-8C187.6,226.7 185.6,223.8 182.7,222.6z"
+      android:fillColor="#669DF6"/>
+  <path
+      android:pathData="M209,222.6v-17.5h7.5l-10.6,-18.7l-10.6,18.7h7.5v17.5c-2.9,1.2 -4.9,4 -4.9,7.4c0,4.4 3.5,8 8,8c4.4,0 8,-3.5 8,-8C213.9,226.7 211.9,223.8 209,222.6z"
+      android:fillColor="#669DF6"/>
+  <path
+      android:pathData="M235.2,222.6v-17.5h7.5l-10.6,-18.7l-10.6,18.7h7.5v17.5c-2.9,1.2 -4.9,4 -4.9,7.4c0,4.4 3.5,8 8,8c4.4,0 8,-3.5 8,-8C240,226.7 238,223.8 235.2,222.6z"
+      android:fillColor="#669DF6"/>
+  <path
+      android:pathData="M325.4,231.9c0,9.8 -7.9,17.7 -17.7,17.7H103.9c-9.8,0 -17.7,-7.9 -17.7,-17.7V0h-4.4v231.9c0,12.2 9.9,22.2 22.1,22.2h203.8c12.2,0 22.1,-9.9 22.1,-22.2V14.8c2.4,0 4.4,-2 4.4,-4.4V0h-8.9V231.9z"
+      android:fillColor="#80868B"/>
+</vector>
diff --git a/res/drawable-night/accessibility_button_preview_two_finger.xml b/res/drawable-night/accessibility_button_preview_two_finger.xml
new file mode 100644
index 0000000..05871d9
--- /dev/null
+++ b/res/drawable-night/accessibility_button_preview_two_finger.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M384.2,300H27.8C12.5,300 0,287.2 0,271.5v-243C0,12.8 12.5,0 27.8,0h356.5C399.5,0 412,12.8 412,28.5v243.2C412,287.2 399.5,300 384.2,300z"/>
+  <path
+      android:pathData="M325.4,231.9c0,9.8 -7.9,17.7 -17.7,17.7H103.9c-9.8,0 -17.7,-7.9 -17.7,-17.7V0h-4.4v231.9c0,12.2 9.9,22.2 22.1,22.2h203.8c12.2,0 22.1,-9.9 22.1,-22.2V14.8c2.4,0 4.4,-2 4.4,-4.4V0h-8.9V231.9z"
+      android:fillColor="#80868B"/>
+  <path
+      android:pathData="M242.4,226.9h-9.3h-5.6h-43.4h-4.7h-10.2c-1.7,0 -3.1,1.4 -3.1,3.1s1.4,3.1 3.1,3.1h10.2h3.9h45h4.8h9.3c1.7,0 3.1,-1.4 3.1,-3.1S244.1,226.9 242.4,226.9z"
+      android:fillColor="#80868B"/>
+  <path
+      android:pathData="M194,223.5v-17.5h7.5l-10.6,-18.7l-10.6,18.7h7.5v17.5c-1.6,0.7 -2.9,1.9 -3.8,3.4c-0.7,1.2 -1.1,2.5 -1.1,4c0,0.7 0.1,1.5 0.3,2.2c0.9,3.3 4,5.8 7.7,5.8c3.6,0 6.7,-2.5 7.7,-5.8c0.2,-0.7 0.3,-1.4 0.3,-2.2c0,-1.5 -0.4,-2.8 -1.1,-4C197,225.4 195.6,224.2 194,223.5z"
+      android:fillColor="#669DF6"/>
+  <path
+      android:pathData="M223.7,223.5v-17.5h7.5l-10.6,-18.7l-10.6,18.7h7.5v17.5c-1.6,0.7 -2.9,1.9 -3.8,3.4c-0.7,1.2 -1.1,2.5 -1.1,4c0,0.7 0.1,1.5 0.3,2.2c0.9,3.3 4,5.8 7.7,5.8c3.6,0 6.7,-2.5 7.7,-5.8c0.2,-0.7 0.3,-1.4 0.3,-2.2c0,-1.5 -0.4,-2.8 -1.1,-4C226.6,225.4 225.3,224.2 223.7,223.5z"
+      android:fillColor="#669DF6"/>
+</vector>
diff --git a/res/drawable-night/accessibility_captions_banner.xml b/res/drawable-night/accessibility_captions_banner.xml
new file mode 100644
index 0000000..7ee30f2
--- /dev/null
+++ b/res/drawable-night/accessibility_captions_banner.xml
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M383.9,300H28.1C12.6,300 0,287.4 0,271.9V28.1C0,12.6 12.6,0 28.1,0h355.8C399.4,0 412,12.6 412,28.1v243.8C412,287.4 399.4,300 383.9,300z"/>
+  <path
+      android:pathData="M79.2,179.6h53.6v8.5h-53.6z"
+      android:fillColor="#669DF6"/>
+  <path
+      android:pathData="M142.5,179.6h30.4v8.5h-30.4z"
+      android:fillColor="#669DF6"/>
+  <path
+      android:pathData="M79.2,195.5h79.2v8.5h-79.2z"
+      android:fillColor="#669DF6"/>
+  <path
+      android:pathData="M168.1,195.5h34.1v8.5h-34.1z"
+      android:fillColor="#669DF6"/>
+  <path
+      android:pathData="M211.9,195.5h34.1v8.5h-34.1z"
+      android:fillColor="#669DF6"/>
+  <path
+      android:pathData="M182.7,179.6h73.1v8.5h-73.1z"
+      android:fillColor="#669DF6"/>
+  <path
+      android:pathData="M265.5,179.6h26.8v8.5h-26.8z"
+      android:fillColor="#669DF6"/>
+  <path
+      android:pathData="M302.1,179.6h26.8v8.5h-26.8z"
+      android:fillColor="#669DF6"/>
+  <path
+      android:pathData="M142.7,67.9h-11.5c-1.6,0 -2.9,1.3 -2.9,2.9H67.8c-7.9,0 -14.4,6.5 -14.4,14.4v132.4c0,7.9 6.5,14.4 14.4,14.4h276.4c7.9,0 14.4,-6.5 14.4,-14.4V85.2c0,-7.9 -6.5,-14.4 -14.4,-14.4H203.1c0,-1.6 -1.3,-2.9 -2.9,-2.9h-28.8c-1.6,0 -2.9,1.3 -2.9,2.9h-23C145.5,69.2 144.3,67.9 142.7,67.9zM344.2,73.7c6.4,0 11.5,5.2 11.5,11.5v132.4c0,6.3 -5.2,11.5 -11.5,11.5H67.8c-6.4,0 -11.5,-5.2 -11.5,-11.5V85.2c0,-6.3 5.2,-11.5 11.5,-11.5H344.2z"
+      android:fillColor="#80868B"/>
+</vector>
diff --git a/res/drawable-night/ic_illustration_fullscreen.xml b/res/drawable-night/ic_illustration_fullscreen.xml
new file mode 100644
index 0000000..c5f1f92
--- /dev/null
+++ b/res/drawable-night/ic_illustration_fullscreen.xml
@@ -0,0 +1,211 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
+  <path
+      android:pathData="M-83.4,-43h-356.4c-15.3,0 -27.8,-12.8 -27.8,-28.5v-243c0,-15.7 12.5,-28.5 27.8,-28.5h356.5c15.2,0 27.7,12.8 27.7,28.5v243.2C-55.6,-55.8 -68.1,-43 -83.4,-43z"
+      android:fillColor="#FFFFFF"/>
+  <path
+      android:pathData="M-260.2,-323.9c35,0 67.9,13.6 92.6,38.4c24.7,24.7 38.4,57.6 38.4,92.6s-13.6,67.9 -38.4,92.6c-24.7,24.7 -57.6,38.4 -92.6,38.4s-67.9,-13.6 -92.6,-38.4c-24.7,-24.8 -38.4,-57.7 -38.4,-92.7s13.6,-67.9 38.4,-92.6C-328.1,-310.3 -295.2,-323.9 -260.2,-323.9M-260.2,-325.9c-73.4,0 -133,59.5 -133,132.9s59.5,132.9 132.9,132.9s133,-59.5 133,-132.9S-186.8,-325.9 -260.2,-325.9L-260.2,-325.9z"
+      android:fillColor="#E8EAED"/>
+  <path
+      android:pathData="M-205.5,-235.3v-7.7c0,-1.1 -0.9,-1.9 -1.9,-1.9v-40.4c0,-5.3 -4.3,-9.6 -9.6,-9.6h-88.5c-5.3,0 -9.6,4.3 -9.6,9.6v184.8c0,5.3 4.3,9.6 9.6,9.6h88.5c5.3,0 9.6,-4.3 9.6,-9.6v-94.3c1.1,0 1.9,-0.9 1.9,-1.9v-19.2c0,-1.1 -0.9,-1.9 -1.9,-1.9v-15.4C-206.4,-233.4 -205.5,-234.3 -205.5,-235.3zM-209.4,-100.6c0,4.2 -3.5,7.7 -7.7,7.7h-88.5c-4.2,0 -7.7,-3.5 -7.7,-7.7v-184.8c0,-4.2 3.5,-7.7 7.7,-7.7h88.5c4.2,0 7.7,3.5 7.7,7.7V-100.6z"
+      android:fillColor="#DADCE0"/>
+  <path
+      android:pathData="M-217.1,-224.1c2,0 3.7,1.7 3.7,3.7v54.8c0,2 -1.7,3.7 -3.7,3.7h-88.5c-2,0 -3.7,-1.7 -3.7,-3.7v-54.8c0,-2 1.7,-3.7 3.7,-3.7H-217.1M-217.1,-228.1h-88.5c-4.2,0 -7.7,3.5 -7.7,7.7v54.8c0,4.2 3.5,7.7 7.7,7.7h88.5c4.2,0 7.7,-3.5 7.7,-7.7v-54.8C-209.4,-224.6 -212.8,-228.1 -217.1,-228.1L-217.1,-228.1z"
+      android:fillColor="#F9AB00"/>
+  <path
+      android:pathData="M-230.7,-217.4l11,0l0,11"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#F9AB00"
+      android:strokeLineCap="round"/>
+  <path
+      android:pathData="M-219.7,-217.4L-235.3,-201.8"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#F9AB00"
+      android:strokeLineCap="round"/>
+  <path
+      android:pathData="M-292.4,-167.9l-10.9,0l0,-11"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#F9AB00"
+      android:strokeLineCap="round"/>
+  <path
+      android:pathData="M-303.3,-167.9L-287.7,-183.5"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#F9AB00"
+      android:strokeLineCap="round"/>
+  <path
+      android:fillColor="#FF000000"
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diff --git a/res/drawable-night/ic_illustration_switch.xml b/res/drawable-night/ic_illustration_switch.xml
new file mode 100644
index 0000000..9cabced
--- /dev/null
+++ b/res/drawable-night/ic_illustration_switch.xml
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M384.2,300H27.8C12.5,300 0,287.2 0,271.5v-243C0,12.8 12.5,0 27.8,0h356.5C399.5,0 412,12.8 412,28.5v243.2C412,287.2 399.5,300 384.2,300z"/>
+  <path
+      android:pathData="M207.4,19.1c35,0 67.9,13.6 92.6,38.4c24.7,24.7 38.4,57.6 38.4,92.6S324.8,218 300,242.7c-24.7,24.7 -57.6,38.4 -92.6,38.4s-67.9,-13.6 -92.6,-38.4C90.1,217.9 76.4,185 76.4,150S90,82.1 114.8,57.4C139.5,32.7 172.4,19.1 207.4,19.1M207.4,17.1c-73.4,0 -133,59.5 -133,132.9s59.5,132.9 132.9,132.9s133,-59.5 133,-132.9S280.8,17.1 207.4,17.1L207.4,17.1z"
+      android:fillColor="#3C4043"/>
+  <path
+      android:pathData="M262.1,107.7V100c0,-1.1 -0.9,-1.9 -1.9,-1.9V57.6c0,-5.3 -4.3,-9.6 -9.6,-9.6H162c-5.3,0 -9.6,4.3 -9.6,9.6v184.8c0,5.3 4.3,9.6 9.6,9.6h88.5c5.3,0 9.6,-4.3 9.6,-9.6v-94.3c1.1,0 1.9,-0.9 1.9,-1.9v-19.2c0,-1.1 -0.9,-1.9 -1.9,-1.9v-15.4C261.2,109.6 262.1,108.7 262.1,107.7zM258.2,242.4c0,4.2 -3.5,7.7 -7.7,7.7H162c-4.2,0 -7.7,-3.5 -7.7,-7.7V57.6c0,-4.2 3.5,-7.7 7.7,-7.7h88.5c4.2,0 7.7,3.5 7.7,7.7V242.4z"
+      android:fillColor="#80868B"/>
+  <path
+      android:pathData="M250.5,53.9c2,0 3.7,1.7 3.7,3.7v184.8c0,2 -1.7,3.7 -3.7,3.7H162c-2,0 -3.7,-1.7 -3.7,-3.7V57.6c0,-2 1.7,-3.7 3.7,-3.7H250.5M250.5,49.9H162c-4.2,0 -7.7,3.5 -7.7,7.7v184.8c0,4.2 3.5,7.7 7.7,7.7h88.5c4.2,0 7.7,-3.5 7.7,-7.7V57.6C258.2,53.4 254.8,49.9 250.5,49.9L250.5,49.9z"
+      android:fillColor="#FCC934"/>
+  <path
+      android:pathData="M214.2,223.8v17.5h34.9v-34.9h-17.5v3.5h14v27.9h-27.9v-14H214.2z"
+      android:fillColor="#DADCE0"/>
+  <path
+      android:pathData="M228.2,206.3h-14v14h14V206.3z"
+      android:fillColor="#DADCE0"/>
+  <path
+      android:pathData="M242.2,222.1v3.5h-6.3l7.9,7.9l-2.5,2.5l-7.9,-7.9v6.3h-3.5v-12.2H242.2z"
+      android:fillColor="#DADCE0"/>
+</vector>
diff --git a/res/drawable-night/ic_illustration_window.xml b/res/drawable-night/ic_illustration_window.xml
new file mode 100644
index 0000000..7984df5
--- /dev/null
+++ b/res/drawable-night/ic_illustration_window.xml
@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M384.2,300H27.8C12.5,300 0,287.2 0,271.5v-243C0,12.8 12.5,0 27.8,0h356.5C399.5,0 412,12.8 412,28.5v243.2C412,287.2 399.5,300 384.2,300z"/>
+  <path
+      android:pathData="M207.4,19.1c35,0 67.9,13.6 92.6,38.4c24.7,24.7 38.4,57.6 38.4,92.6S324.8,218 300,242.7c-24.7,24.7 -57.6,38.4 -92.6,38.4s-67.9,-13.6 -92.6,-38.4C90.1,217.9 76.4,185 76.4,150S90,82.1 114.8,57.4C139.5,32.7 172.4,19.1 207.4,19.1M207.4,17.1c-73.4,0 -133,59.5 -133,132.9s59.5,132.9 132.9,132.9s133,-59.5 133,-132.9S280.8,17.1 207.4,17.1L207.4,17.1z"
+      android:fillColor="#3C4043"/>
+  <path
+      android:pathData="M262.1,107.7V100c0,-1.1 -0.9,-1.9 -1.9,-1.9V57.6c0,-5.3 -4.3,-9.6 -9.6,-9.6H162c-5.3,0 -9.6,4.3 -9.6,9.6v184.8c0,5.3 4.3,9.6 9.6,9.6h88.5c5.3,0 9.6,-4.3 9.6,-9.6v-94.3c1.1,0 1.9,-0.9 1.9,-1.9v-19.2c0,-1.1 -0.9,-1.9 -1.9,-1.9v-15.4C261.2,109.6 262.1,108.7 262.1,107.7zM258.2,242.4c0,4.2 -3.5,7.7 -7.7,7.7H162c-4.2,0 -7.7,-3.5 -7.7,-7.7V57.6c0,-4.2 3.5,-7.7 7.7,-7.7h88.5c4.2,0 7.7,3.5 7.7,7.7V242.4z"
+      android:fillColor="#80868B"/>
+  <path
+      android:pathData="M250.5,118.9c2,0 3.7,1.7 3.7,3.7v54.8c0,2 -1.7,3.7 -3.7,3.7H162c-2,0 -3.7,-1.7 -3.7,-3.7v-54.8c0,-2 1.7,-3.7 3.7,-3.7H250.5M250.5,114.9H162c-4.2,0 -7.7,3.5 -7.7,7.7v54.8c0,4.2 3.5,7.7 7.7,7.7h88.5c4.2,0 7.7,-3.5 7.7,-7.7v-54.8C258.2,118.4 254.8,114.9 250.5,114.9L250.5,114.9z"
+      android:fillColor="#FCC934"/>
+  <path
+      android:pathData="M236.9,125.6l11,0l0,11"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#FCC934"
+      android:strokeLineCap="round"/>
+  <path
+      android:pathData="M247.9,125.6L232.3,141.2"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#FCC934"
+      android:strokeLineCap="round"/>
+  <path
+      android:pathData="M175.2,175.1l-10.9,0l0,-11"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#FCC934"
+      android:strokeLineCap="round"/>
+  <path
+      android:pathData="M164.3,175.1L179.9,159.5"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#FCC934"
+      android:strokeLineCap="round"/>
+</vector>
diff --git a/res/drawable/accessibility_button_preview_base.xml b/res/drawable/accessibility_button_preview_base.xml
index 9e3ec59..b75b1a8 100644
--- a/res/drawable/accessibility_button_preview_base.xml
+++ b/res/drawable/accessibility_button_preview_base.xml
@@ -15,28 +15,14 @@
 -->
 
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="125dp"
-    android:height="153dp"
-    android:viewportWidth="125"
-    android:viewportHeight="153">
-  <group>
-    <clip-path
-        android:pathData="M0,0h125v153h-125z"/>
-    <path
-        android:pathData="M7.4,-62.9L117.6,-62.9A6.3,6.3 0,0 1,123.9 -56.6L123.9,145.6A6.3,6.3 0,0 1,117.6 151.9L7.4,151.9A6.3,6.3 0,0 1,1.1 145.6L1.1,-56.6A6.3,6.3 0,0 1,7.4 -62.9z"
-        android:strokeWidth="1.8"
-        android:fillColor="#DADCE0"
-        android:strokeColor="#BDC1C6"/>
-    <group>
-      <clip-path
-          android:pathData="M7.4,-62.9L116.6,-62.9A6.3,6.3 0,0 1,122.9 -56.6L122.9,145.6A6.3,6.3 0,0 1,116.6 151.9L7.4,151.9A6.3,6.3 0,0 1,1.1 145.6L1.1,-56.6A6.3,6.3 0,0 1,7.4 -62.9z"/>
-      <path
-          android:pathData="M12.4,-61L112.6,-61A5.4,5.4 0,0 1,118 -55.6L118,140.6A5.4,5.4 0,0 1,112.6 146L12.4,146A5.4,5.4 0,0 1,7 140.6L7,-55.6A5.4,5.4 0,0 1,12.4 -61z"
-          android:fillColor="#F8F9FA"/>
-      <group>
-        <clip-path
-            android:pathData="M12.4,-61L112.6,-61A5.4,5.4 0,0 1,118 -55.6L118,140.6A5.4,5.4 0,0 1,112.6 146L12.4,146A5.4,5.4 0,0 1,7 140.6L7,-55.6A5.4,5.4 0,0 1,12.4 -61z"/>
-      </group>
-    </group>
-  </group>
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
+  <path
+      android:pathData="M384.2,300H27.8C12.5,300 0,287.2 0,271.5v-243C0,12.8 12.5,0 27.8,0h356.5C399.5,0 412,12.8 412,28.5v243.2C412,287.2 399.5,300 384.2,300z"
+      android:fillColor="#FFFFFF"/>
+  <path
+      android:pathData="M325.4,231.9c0,9.8 -7.9,17.7 -17.7,17.7H103.9c-9.8,0 -17.7,-7.9 -17.7,-17.7V0h-4.4v231.9c0,12.2 9.9,22.2 22.1,22.2h203.8c12.2,0 22.1,-9.9 22.1,-22.2V14.8c2.4,0 4.4,-2 4.4,-4.4V0h-8.9L325.4,231.9L325.4,231.9z"
+      android:fillColor="#DADCE0"/>
 </vector>
diff --git a/res/drawable/accessibility_button_preview_large_floating_menu.xml b/res/drawable/accessibility_button_preview_large_floating_menu.xml
index e003dc7..794f3ca 100644
--- a/res/drawable/accessibility_button_preview_large_floating_menu.xml
+++ b/res/drawable/accessibility_button_preview_large_floating_menu.xml
@@ -15,27 +15,14 @@
 -->
 
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="125dp"
-    android:height="153dp"
-    android:viewportWidth="125"
-    android:viewportHeight="153">
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
     <path
-        android:pathData="M0,0h125v153h-125z"
-        android:fillColor="#00000000"/>
-    <group>
-        <clip-path
-            android:pathData="M89,95h29v34h-29z"/>
-        <path
-            android:strokeWidth="1"
-            android:pathData="M105,97.5L131,97.5A14.5,14.5 0,0 1,145.5 112L145.5,112A14.5,14.5 0,0 1,131 126.5L105,126.5A14.5,14.5 0,0 1,90.5 112L90.5,112A14.5,14.5 0,0 1,105 97.5z"
-            android:fillColor="#ffffff"
-            android:strokeColor="#DADCE0"/>
-        <path
-            android:pathData="M105.4,112m-11.2,0a11.2,11.2 0,1 1,22.4 0a11.2,11.2 0,1 1,-22.4 0"
-            android:fillColor="#80868B"/>
-        <path
-            android:pathData="M106.467,107.733C106.467,108.32 105.987,108.8 105.4,108.8C104.814,108.8 104.334,108.32 104.334,107.733C104.334,107.147 104.814,106.667 105.4,106.667C105.987,106.667 106.467,107.147 106.467,107.733ZM105.4,109.333C106.91,109.333 108.542,109.173 109.934,108.8L110.2,109.867C109.208,110.133 108.067,110.309 107,110.4V117.333H105.934V114.133H104.867V117.333H103.8V110.4C102.734,110.309 101.592,110.133 100.6,109.867L100.867,108.8C102.259,109.173 103.891,109.333 105.4,109.333Z"
-            android:fillColor="#ffffff"
-            android:fillType="evenOdd"/>
-    </group>
-</vector>
\ No newline at end of file
+        android:pathData="M325.4,198.2h-40.9c-22.1,0 -40,-18 -40,-40s18,-40 40,-40h40.9v2.6h-40.9c-20.7,0 -37.5,16.8 -37.5,37.5s16.8,37.5 37.5,37.5h40.9V198.2z"
+        android:fillColor="#DADCE0"/>
+    <path
+        android:pathData="M284.3,128.4c-16.5,0 -29.8,13.4 -29.8,29.8c0,16.5 13.4,29.8 29.8,29.8s29.8,-13.4 29.8,-29.8C314.2,141.7 300.9,128.4 284.3,128.4zM284.3,142.7c1.7,0 3.1,1.4 3.1,3.1c0,1.7 -1.4,3.1 -3.1,3.1s-3.1,-1.4 -3.1,-3.1C281.2,144.1 282.7,142.7 284.3,142.7zM289.1,153.7V174H286v-9.4h-3.1v9.4h-3.2v-20.3c-3.1,-0.3 -6.5,-0.8 -9.4,-1.5l0.8,-3.1c4.1,1 8.9,1.5 13.3,1.5s9.2,-0.5 13.3,-1.5l0.8,3.1C295.6,152.9 292.2,153.4 289.1,153.7z"
+        android:fillColor="#606368"/>
+</vector>
diff --git a/res/drawable/accessibility_button_preview_small_floating_menu.xml b/res/drawable/accessibility_button_preview_small_floating_menu.xml
index 3ff8e4b..670a516 100644
--- a/res/drawable/accessibility_button_preview_small_floating_menu.xml
+++ b/res/drawable/accessibility_button_preview_small_floating_menu.xml
@@ -15,27 +15,14 @@
 -->
 
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="125dp"
-    android:height="153dp"
-    android:viewportWidth="125"
-    android:viewportHeight="153">
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
     <path
-        android:pathData="M0,0h125v153h-125z"
-        android:fillColor="#00000000"/>
-    <group>
-        <clip-path
-            android:pathData="M89,106h29v22h-29z"/>
-        <path
-            android:strokeWidth="1"
-            android:pathData="M111,107.5L137,107.5A9.5,9.5 0,0 1,146.5 117L146.5,117A9.5,9.5 0,0 1,137 126.5L111,126.5A9.5,9.5 0,0 1,101.5 117L101.5,117A9.5,9.5 0,0 1,111 107.5z"
-            android:fillColor="#ffffff"
-            android:strokeColor="#DADCE0"/>
-        <path
-            android:pathData="M111.168,116.968m-7.168,0a7.168,7.168 0,1 1,14.336 0a7.168,7.168 0,1 1,-14.336 0"
-            android:fillColor="#80868B"/>
-        <path
-            android:pathData="M111.851,114.237C111.851,114.612 111.543,114.92 111.168,114.92C110.792,114.92 110.485,114.612 110.485,114.237C110.485,113.861 110.792,113.554 111.168,113.554C111.543,113.554 111.851,113.861 111.851,114.237ZM111.168,115.261C112.134,115.261 113.178,115.158 114.069,114.92L114.24,115.602C113.605,115.773 112.875,115.886 112.192,115.944V120.381H111.509V118.333H110.827V120.381H110.144V115.944C109.461,115.886 108.731,115.773 108.096,115.602L108.267,114.92C109.157,115.158 110.202,115.261 111.168,115.261Z"
-            android:fillColor="#ffffff"
-            android:fillType="evenOdd"/>
-    </group>
-</vector>
\ No newline at end of file
+        android:pathData="M325.4,189.2h-31.7c-17.1,0 -31,-13.9 -31,-31s13.9,-31 31,-31h31.7v2h-31.7c-16,0 -29,13 -29,29s13,29 29,29h31.7V189.2z"
+        android:fillColor="#DADCE0"/>
+    <path
+        android:pathData="M293.6,135.1c-12.8,0 -23.1,10.4 -23.1,23.1c0,12.8 10.4,23.1 23.1,23.1s23.1,-10.4 23.1,-23.1C316.7,145.4 306.4,135.1 293.6,135.1zM293.6,146.2c1.3,0 2.4,1.1 2.4,2.4s-1.1,2.4 -2.4,2.4s-2.4,-1.1 -2.4,-2.4S292.3,146.2 293.6,146.2zM297.3,154.7v15.7h-2.4v-7.3h-2.4v7.3H290v-15.7c-2.4,-0.2 -5,-0.6 -7.3,-1.2l0.6,-2.4c3.2,0.8 6.9,1.2 10.3,1.2s7.1,-0.4 10.3,-1.2l0.6,2.4C302.3,154.1 299.7,154.5 297.3,154.7z"
+        android:fillColor="#606368"/>
+</vector>
diff --git a/res/drawable/accessibility_button_preview_three_finger.xml b/res/drawable/accessibility_button_preview_three_finger.xml
new file mode 100644
index 0000000..d18ce60
--- /dev/null
+++ b/res/drawable/accessibility_button_preview_three_finger.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
+  <path
+      android:pathData="M384.2,300H27.8C12.5,300 0,287.2 0,271.5v-243C0,12.8 12.5,0 27.8,0h356.5C399.5,0 412,12.8 412,28.5v243.2C412,287.2 399.5,300 384.2,300z"
+      android:fillColor="#FFFFFF"/>
+  <path
+      android:pathData="M242.5,226.9h-73.3c-1.7,0 -3.1,1.4 -3.1,3.1s1.4,3.1 3.1,3.1h73.3c1.7,0 3.1,-1.4 3.1,-3.1S244.2,226.9 242.5,226.9z"
+      android:fillColor="#DADCE0"/>
+  <path
+      android:pathData="M182.7,222.6v-17.5h7.5l-10.6,-18.7l-10.6,18.7h7.5v17.5c-2.9,1.2 -4.9,4 -4.9,7.4c0,4.4 3.5,8 8,8c4.4,0 8,-3.5 8,-8C187.6,226.7 185.6,223.8 182.7,222.6z"
+      android:fillColor="#1A73E8"/>
+  <path
+      android:pathData="M209,222.6v-17.5h7.5l-10.6,-18.7l-10.6,18.7h7.5v17.5c-2.9,1.2 -4.9,4 -4.9,7.4c0,4.4 3.5,8 8,8c4.4,0 8,-3.5 8,-8C213.9,226.7 211.9,223.8 209,222.6z"
+      android:fillColor="#1A73E8"/>
+  <path
+      android:pathData="M235.2,222.6v-17.5h7.5l-10.6,-18.7l-10.6,18.7h7.5v17.5c-2.9,1.2 -4.9,4 -4.9,7.4c0,4.4 3.5,8 8,8c4.4,0 8,-3.5 8,-8C240,226.7 238,223.8 235.2,222.6z"
+      android:fillColor="#1A73E8"/>
+  <path
+      android:pathData="M325.4,231.9c0,9.8 -7.9,17.7 -17.7,17.7H103.9c-9.8,0 -17.7,-7.9 -17.7,-17.7V0h-4.4v231.9c0,12.2 9.9,22.2 22.1,22.2h203.8c12.2,0 22.1,-9.9 22.1,-22.2V14.8c2.4,0 4.4,-2 4.4,-4.4V0h-8.9V231.9z"
+      android:fillColor="#DADCE0"/>
+</vector>
diff --git a/res/drawable/accessibility_button_preview_two_finger.xml b/res/drawable/accessibility_button_preview_two_finger.xml
new file mode 100644
index 0000000..bec95af
--- /dev/null
+++ b/res/drawable/accessibility_button_preview_two_finger.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
+  <path
+      android:pathData="M384.2,300H27.8C12.5,300 0,287.2 0,271.5v-243C0,12.8 12.5,0 27.8,0h356.5C399.5,0 412,12.8 412,28.5v243.2C412,287.2 399.5,300 384.2,300z"
+      android:fillColor="#FFFFFF"/>
+  <path
+      android:pathData="M325.4,231.9c0,9.8 -7.9,17.7 -17.7,17.7H103.9c-9.8,0 -17.7,-7.9 -17.7,-17.7V0h-4.4v231.9c0,12.2 9.9,22.2 22.1,22.2h203.8c12.2,0 22.1,-9.9 22.1,-22.2V14.8c2.4,0 4.4,-2 4.4,-4.4V0h-8.9V231.9z"
+      android:fillColor="#DADCE0"/>
+  <path
+      android:pathData="M242.4,226.9h-9.3h-5.6h-43.4h-4.7h-10.2c-1.7,0 -3.1,1.4 -3.1,3.1s1.4,3.1 3.1,3.1h10.2h3.9h45h4.8h9.3c1.7,0 3.1,-1.4 3.1,-3.1S244.1,226.9 242.4,226.9z"
+      android:fillColor="#DADCE0"/>
+  <path
+      android:pathData="M194,223.5v-17.5h7.5l-10.6,-18.7l-10.6,18.7h7.5v17.5c-1.6,0.7 -2.9,1.9 -3.8,3.4c-0.7,1.2 -1.1,2.5 -1.1,4c0,0.7 0.1,1.5 0.3,2.2c0.9,3.3 4,5.8 7.7,5.8c3.6,0 6.7,-2.5 7.7,-5.8c0.2,-0.7 0.3,-1.4 0.3,-2.2c0,-1.5 -0.4,-2.8 -1.1,-4C197,225.4 195.6,224.2 194,223.5z"
+      android:fillColor="#1A73E8"/>
+  <path
+      android:pathData="M223.7,223.5v-17.5h7.5l-10.6,-18.7l-10.6,18.7h7.5v17.5c-1.6,0.7 -2.9,1.9 -3.8,3.4c-0.7,1.2 -1.1,2.5 -1.1,4c0,0.7 0.1,1.5 0.3,2.2c0.9,3.3 4,5.8 7.7,5.8c3.6,0 6.7,-2.5 7.7,-5.8c0.2,-0.7 0.3,-1.4 0.3,-2.2c0,-1.5 -0.4,-2.8 -1.1,-4C226.6,225.4 225.3,224.2 223.7,223.5z"
+      android:fillColor="#1A73E8"/>
+</vector>
diff --git a/res/drawable/accessibility_captions.png b/res/drawable/accessibility_captions.png
deleted file mode 100644
index 718f4ef..0000000
--- a/res/drawable/accessibility_captions.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable/accessibility_captions_banner.xml b/res/drawable/accessibility_captions_banner.xml
new file mode 100644
index 0000000..6597ffb
--- /dev/null
+++ b/res/drawable/accessibility_captions_banner.xml
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
+  <path
+      android:pathData="M383.9,300H28.1C12.6,300 0,287.4 0,271.9V28.1C0,12.6 12.6,0 28.1,0h355.8C399.4,0 412,12.6 412,28.1v243.8C412,287.4 399.4,300 383.9,300z"
+      android:fillColor="#FFFFFF"/>
+  <path
+      android:pathData="M79.2,179.6h53.6v8.5h-53.6z"
+      android:fillColor="#1A73E8"/>
+  <path
+      android:pathData="M142.5,179.6h30.4v8.5h-30.4z"
+      android:fillColor="#1A73E8"/>
+  <path
+      android:pathData="M79.2,195.5h79.2v8.5h-79.2z"
+      android:fillColor="#1A73E8"/>
+  <path
+      android:pathData="M168.1,195.5h34.1v8.5h-34.1z"
+      android:fillColor="#1A73E8"/>
+  <path
+      android:pathData="M211.9,195.5h34.1v8.5h-34.1z"
+      android:fillColor="#1A73E8"/>
+  <path
+      android:pathData="M182.7,179.6h73.1v8.5h-73.1z"
+      android:fillColor="#1A73E8"/>
+  <path
+      android:pathData="M265.5,179.6h26.8v8.5h-26.8z"
+      android:fillColor="#1A73E8"/>
+  <path
+      android:pathData="M302.1,179.6h26.8v8.5h-26.8z"
+      android:fillColor="#1A73E8"/>
+  <path
+      android:pathData="M142.7,67.9h-11.5c-1.6,0 -2.9,1.3 -2.9,2.9H67.8c-7.9,0 -14.4,6.5 -14.4,14.4v132.4c0,7.9 6.5,14.4 14.4,14.4h276.4c7.9,0 14.4,-6.5 14.4,-14.4V85.2c0,-7.9 -6.5,-14.4 -14.4,-14.4H203.1c0,-1.6 -1.3,-2.9 -2.9,-2.9h-28.8c-1.6,0 -2.9,1.3 -2.9,2.9h-23C145.5,69.2 144.3,67.9 142.7,67.9zM344.2,73.7c6.4,0 11.5,5.2 11.5,11.5v132.4c0,6.3 -5.2,11.5 -11.5,11.5H67.8c-6.4,0 -11.5,-5.2 -11.5,-11.5V85.2c0,-6.3 5.2,-11.5 11.5,-11.5H344.2z"
+      android:fillColor="#DADCE0"/>
+</vector>
diff --git a/res/drawable/ic_illustration_fullscreen.xml b/res/drawable/ic_illustration_fullscreen.xml
index fbb62bf..2aca693 100644
--- a/res/drawable/ic_illustration_fullscreen.xml
+++ b/res/drawable/ic_illustration_fullscreen.xml
@@ -14,26 +14,48 @@
      limitations under the License.
 -->
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="77dp"
-    android:height="134dp"
-    android:viewportWidth="77"
-    android:viewportHeight="134">
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
   <path
-      android:pathData="M69.6,1.1H7.4C3.921,1.1 1.1,3.921 1.1,7.4V126.6C1.1,130.079 3.921,132.9 7.4,132.9H69.6C73.079,132.9 75.9,130.079 75.9,126.6V7.4C75.9,3.921 73.079,1.1 69.6,1.1Z"
-      android:strokeWidth="1.8"
-      android:fillColor="#F2F3F4"
-      android:strokeColor="#DADCE0"/>
+      android:pathData="M384.2,300H27.8C12.5,300 0,287.2 0,271.5v-243C0,12.8 12.5,0 27.8,0h356.5C399.5,0 412,12.8 412,28.5v243.2C412,287.2 399.5,300 384.2,300z"
+      android:fillColor="#FFFFFF"/>
   <path
-      android:pathData="M66.642,5H10.358C7.399,5 5,7.418 5,10.4V123.6C5,126.582 7.399,129 10.358,129H66.642C69.601,129 72,126.582 72,123.6V10.4C72,7.418 69.601,5 66.642,5Z"
-      android:fillColor="#ffffff"/>
+      android:pathData="M207.4,19.1c35,0 67.9,13.6 92.6,38.4c24.7,24.7 38.4,57.6 38.4,92.6S324.8,218 300,242.7c-24.7,24.7 -57.6,38.4 -92.6,38.4s-67.9,-13.6 -92.6,-38.4C90.1,217.9 76.4,185 76.4,150S90,82.1 114.8,57.4C139.5,32.7 172.4,19.1 207.4,19.1M207.4,17.1c-73.4,0 -133,59.5 -133,132.9s59.5,132.9 132.9,132.9s133,-59.5 133,-132.9S280.8,17.1 207.4,17.1L207.4,17.1z"
+      android:fillColor="#E8EAED"/>
   <path
-      android:pathData="M66,10H11C10.448,10 10,10.448 10,11V123C10,123.552 10.448,124 11,124H66C66.552,124 67,123.552 67,123V11C67,10.448 66.552,10 66,10ZM11,5C7.686,5 5,7.686 5,11V123C5,126.314 7.686,129 11,129H66C69.314,129 72,126.314 72,123V11C72,7.686 69.314,5 66,5H11Z"
-      android:fillColor="#F29900"
-      android:fillType="evenOdd"/>
+      android:pathData="M262.1,107.7V100c0,-1.1 -0.9,-1.9 -1.9,-1.9V57.6c0,-5.3 -4.3,-9.6 -9.6,-9.6H162c-5.3,0 -9.6,4.3 -9.6,9.6v184.8c0,5.3 4.3,9.6 9.6,9.6h88.5c5.3,0 9.6,-4.3 9.6,-9.6v-94.3c1.1,0 1.9,-0.9 1.9,-1.9v-19.2c0,-1.1 -0.9,-1.9 -1.9,-1.9v-15.4C261.2,109.6 262.1,108.7 262.1,107.7zM258.2,242.4c0,4.2 -3.5,7.7 -7.7,7.7H162c-4.2,0 -7.7,-3.5 -7.7,-7.7V57.6c0,-4.2 3.5,-7.7 7.7,-7.7h88.5c4.2,0 7.7,3.5 7.7,7.7V242.4z"
+      android:fillColor="#DADCE0"/>
   <path
-      android:pathData="M49.077,15V19.314H54.612L48,25.958L51.037,29L57.692,22.334V27.921H62V15H49.077Z"
-      android:fillColor="#F29900"/>
+      android:pathData="M250.5,53.9c2,0 3.7,1.7 3.7,3.7v184.8c0,2 -1.7,3.7 -3.7,3.7H162c-2,0 -3.7,-1.7 -3.7,-3.7V57.6c0,-2 1.7,-3.7 3.7,-3.7H250.5M250.5,49.9H162c-4.2,0 -7.7,3.5 -7.7,7.7v184.8c0,4.2 3.5,7.7 7.7,7.7h88.5c4.2,0 7.7,-3.5 7.7,-7.7V57.6C258.2,53.4 254.8,49.9 250.5,49.9L250.5,49.9z"
+      android:fillColor="#F9AB00"/>
   <path
-      android:pathData="M25.963,105L19.308,111.655V106.077H15V119H27.923V114.692H22.366L29,108.037L25.963,105Z"
-      android:fillColor="#F29900"/>
+      android:pathData="M236.9,60.6l11,0l0,11"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#F9AB00"
+      android:strokeLineCap="round"/>
+  <path
+      android:pathData="M247.9,60.6L232.3,76.2"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#F9AB00"
+      android:strokeLineCap="round"/>
+  <path
+      android:pathData="M175.2,240.1l-10.9,0l0,-11"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#F9AB00"
+      android:strokeLineCap="round"/>
+  <path
+      android:pathData="M164.3,240.1L179.9,224.5"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#F9AB00"
+      android:strokeLineCap="round"/>
 </vector>
diff --git a/res/drawable/ic_illustration_switch.xml b/res/drawable/ic_illustration_switch.xml
index 9d3990b..bfe533c 100644
--- a/res/drawable/ic_illustration_switch.xml
+++ b/res/drawable/ic_illustration_switch.xml
@@ -14,33 +14,29 @@
      limitations under the License.
 -->
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="77dp"
-    android:height="134dp"
-    android:viewportWidth="77"
-    android:viewportHeight="134">
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
   <path
-      android:pathData="M69.6,1.1H7.4C3.921,1.1 1.1,3.921 1.1,7.4V126.6C1.1,130.079 3.921,132.9 7.4,132.9H69.6C73.079,132.9 75.9,130.079 75.9,126.6V7.4C75.9,3.921 73.079,1.1 69.6,1.1Z"
-      android:strokeWidth="1.8"
-      android:fillColor="#F2F3F4"
-      android:strokeColor="#DADCE0"/>
+      android:pathData="M384.2,300H27.8C12.5,300 0,287.2 0,271.5v-243C0,12.8 12.5,0 27.8,0h356.5C399.5,0 412,12.8 412,28.5v243.2C412,287.2 399.5,300 384.2,300z"
+      android:fillColor="#FFFFFF"/>
   <path
-      android:pathData="M66.642,5H10.358C7.399,5 5,7.418 5,10.4V123.6C5,126.582 7.399,129 10.358,129H66.642C69.601,129 72,126.582 72,123.6V10.4C72,7.418 69.601,5 66.642,5Z"
-      android:fillColor="#ffffff"/>
+      android:pathData="M207.4,19.1c35,0 67.9,13.6 92.6,38.4c24.7,24.7 38.4,57.6 38.4,92.6S324.8,218 300,242.7c-24.7,24.7 -57.6,38.4 -92.6,38.4s-67.9,-13.6 -92.6,-38.4C90.1,217.9 76.4,185 76.4,150S90,82.1 114.8,57.4C139.5,32.7 172.4,19.1 207.4,19.1M207.4,17.1c-73.4,0 -133,59.5 -133,132.9s59.5,132.9 132.9,132.9s133,-59.5 133,-132.9S280.8,17.1 207.4,17.1L207.4,17.1z"
+      android:fillColor="#E8EAED"/>
   <path
-      android:pathData="M63,94H39V118H63V94Z"
-      android:fillColor="#000000"
-      android:fillAlpha="0.7"/>
+      android:pathData="M262.1,107.7V100c0,-1.1 -0.9,-1.9 -1.9,-1.9V57.6c0,-5.3 -4.3,-9.6 -9.6,-9.6H162c-5.3,0 -9.6,4.3 -9.6,9.6v184.8c0,5.3 4.3,9.6 9.6,9.6h88.5c5.3,0 9.6,-4.3 9.6,-9.6v-94.3c1.1,0 1.9,-0.9 1.9,-1.9V127c0,-1.1 -0.9,-1.9 -1.9,-1.9v-15.4C261.2,109.6 262.1,108.7 262.1,107.7zM258.2,242.4c0,4.2 -3.5,7.7 -7.7,7.7H162c-4.2,0 -7.7,-3.5 -7.7,-7.7V57.6c0,-4.2 3.5,-7.7 7.7,-7.7h88.5c4.2,0 7.7,3.5 7.7,7.7V242.4z"
+      android:fillColor="#DADCE0"/>
   <path
-      android:pathData="M43,106V114H59V98H51V99.6H57.4V112.4H44.6V106H43Z"
-      android:fillColor="#ffffff"/>
+      android:pathData="M250.5,53.9c2,0 3.7,1.7 3.7,3.7v184.8c0,2 -1.7,3.7 -3.7,3.7H162c-2,0 -3.7,-1.7 -3.7,-3.7V57.6c0,-2 1.7,-3.7 3.7,-3.7L250.5,53.9M250.5,49.9H162c-4.2,0 -7.7,3.5 -7.7,7.7v184.8c0,4.2 3.5,7.7 7.7,7.7h88.5c4.2,0 7.7,-3.5 7.7,-7.7V57.6C258.2,53.4 254.8,49.9 250.5,49.9L250.5,49.9z"
+      android:fillColor="#F9AB00"/>
   <path
-      android:pathData="M49.4,98H43V104.4H49.4V98Z"
-      android:fillColor="#ffffff"/>
+      android:pathData="M214.2,223.8v17.5h34.9v-34.9h-17.5v3.5h14v27.9h-27.9v-14H214.2z"
+      android:fillColor="#5F6368"/>
   <path
-      android:pathData="M55.8,105.2V106.8H52.928L56.56,110.432L55.432,111.56L51.8,107.928V110.8H50.2V105.2H55.8Z"
-      android:fillColor="#ffffff"/>
+      android:pathData="M228.2,206.3h-14v14h14V206.3z"
+      android:fillColor="#5F6368"/>
   <path
-      android:pathData="M66,10H11C10.448,10 10,10.448 10,11V123C10,123.552 10.448,124 11,124H66C66.552,124 67,123.552 67,123V11C67,10.448 66.552,10 66,10ZM11,5C7.686,5 5,7.686 5,11V123C5,126.314 7.686,129 11,129H66C69.314,129 72,126.314 72,123V11C72,7.686 69.314,5 66,5H11Z"
-      android:fillColor="#F29900"
-      android:fillType="evenOdd"/>
+      android:pathData="M242.2,222.1v3.5h-6.3l7.9,7.9l-2.5,2.5l-7.9,-7.9v6.3h-3.5v-12.2H242.2z"
+      android:fillColor="#5F6368"/>
 </vector>
diff --git a/res/drawable/ic_illustration_window.xml b/res/drawable/ic_illustration_window.xml
index 1b87d7d..22513f4 100644
--- a/res/drawable/ic_illustration_window.xml
+++ b/res/drawable/ic_illustration_window.xml
@@ -14,28 +14,48 @@
      limitations under the License.
 -->
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="77dp"
-    android:height="134dp"
-    android:viewportWidth="77"
-    android:viewportHeight="134">
+    android:width="412dp"
+    android:height="300dp"
+    android:viewportWidth="412"
+    android:viewportHeight="300">
   <path
-      android:pathData="M69.6,1.1H7.4C3.921,1.1 1.1,3.921 1.1,7.4V126.6C1.1,130.079 3.921,132.9 7.4,132.9H69.6C73.079,132.9 75.9,130.079 75.9,126.6V7.4C75.9,3.921 73.079,1.1 69.6,1.1Z"
-      android:strokeWidth="1.8"
-      android:fillColor="#F2F3F4"
-      android:strokeColor="#DADCE0"/>
+      android:pathData="M384.2,300H27.8C12.5,300 0,287.2 0,271.5v-243C0,12.8 12.5,0 27.8,0h356.5C399.5,0 412,12.8 412,28.5v243.2C412,287.2 399.5,300 384.2,300z"
+      android:fillColor="#FFFFFF"/>
   <path
-      android:pathData="M66.642,5H10.358C7.399,5 5,7.418 5,10.4V123.6C5,126.582 7.399,129 10.358,129H66.642C69.601,129 72,126.582 72,123.6V10.4C72,7.418 69.601,5 66.642,5Z"
-      android:fillColor="#ffffff"/>
+      android:pathData="M207.4,19.1c35,0 67.9,13.6 92.6,38.4c24.7,24.7 38.4,57.6 38.4,92.6S324.8,218 300,242.7c-24.7,24.7 -57.6,38.4 -92.6,38.4s-67.9,-13.6 -92.6,-38.4C90.1,217.9 76.4,185 76.4,150S90,82.1 114.8,57.4C139.5,32.7 172.4,19.1 207.4,19.1M207.4,17.1c-73.4,0 -133,59.5 -133,132.9s59.5,132.9 132.9,132.9s133,-59.5 133,-132.9S280.8,17.1 207.4,17.1L207.4,17.1z"
+      android:fillColor="#E8EAED"/>
   <path
-      android:pathData="M63,48H14C12.895,48 12,48.895 12,50V85C12,86.105 12.895,87 14,87H63C64.105,87 65,86.105 65,85V50C65,48.895 64.105,48 63,48Z"
-      android:strokeLineJoin="bevel"
-      android:strokeWidth="5"
+      android:pathData="M262.1,107.7V100c0,-1.1 -0.9,-1.9 -1.9,-1.9V57.6c0,-5.3 -4.3,-9.6 -9.6,-9.6H162c-5.3,0 -9.6,4.3 -9.6,9.6v184.8c0,5.3 4.3,9.6 9.6,9.6h88.5c5.3,0 9.6,-4.3 9.6,-9.6v-94.3c1.1,0 1.9,-0.9 1.9,-1.9v-19.2c0,-1.1 -0.9,-1.9 -1.9,-1.9v-15.4C261.2,109.6 262.1,108.7 262.1,107.7zM258.2,242.4c0,4.2 -3.5,7.7 -7.7,7.7H162c-4.2,0 -7.7,-3.5 -7.7,-7.7V57.6c0,-4.2 3.5,-7.7 7.7,-7.7h88.5c4.2,0 7.7,3.5 7.7,7.7V242.4z"
+      android:fillColor="#DADCE0"/>
+  <path
+      android:pathData="M250.5,118.9c2,0 3.7,1.7 3.7,3.7v54.8c0,2 -1.7,3.7 -3.7,3.7H162c-2,0 -3.7,-1.7 -3.7,-3.7v-54.8c0,-2 1.7,-3.7 3.7,-3.7H250.5M250.5,114.9H162c-4.2,0 -7.7,3.5 -7.7,7.7v54.8c0,4.2 3.5,7.7 7.7,7.7h88.5c4.2,0 7.7,-3.5 7.7,-7.7v-54.8C258.2,118.4 254.8,114.9 250.5,114.9L250.5,114.9z"
+      android:fillColor="#F9AB00"/>
+  <path
+      android:pathData="M236.9,125.6l11,0l0,11"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
       android:fillColor="#00000000"
-      android:strokeColor="#F29900"/>
+      android:strokeColor="#F9AB00"
+      android:strokeLineCap="round"/>
   <path
-      android:pathData="M46.077,54V58.314H51.612L45,64.958L48.037,68L54.692,61.334V66.921H59V54H46.077Z"
-      android:fillColor="#F29900"/>
+      android:pathData="M247.9,125.6L232.3,141.2"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#F9AB00"
+      android:strokeLineCap="round"/>
   <path
-      android:pathData="M28.963,67L22.308,73.655V68.077H18V81H30.923V76.692H25.366L32,70.037L28.963,67Z"
-      android:fillColor="#F29900"/>
+      android:pathData="M175.2,175.1l-10.9,0l0,-11"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#F9AB00"
+      android:strokeLineCap="round"/>
+  <path
+      android:pathData="M164.3,175.1L179.9,159.5"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#F9AB00"
+      android:strokeLineCap="round"/>
 </vector>
diff --git a/res/layout/accessibility_button_preview.xml b/res/layout/accessibility_button_preview.xml
deleted file mode 100644
index 07cb0ff..0000000
--- a/res/layout/accessibility_button_preview.xml
+++ /dev/null
@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2021 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-
-<FrameLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:clipToPadding="false"
-    android:importantForAccessibility="noHideDescendants">
-
-    <ImageView
-        android:id="@+id/preview_image"
-        android:layout_width="match_parent"
-        android:layout_height="@dimen/accessibility_button_preview_height"
-        android:layout_gravity="center"
-        android:scaleType="fitCenter"
-        android:focusable="false"
-        android:clickable="false"
-        android:adjustViewBounds="true"/>
-</FrameLayout>
\ No newline at end of file
diff --git a/res/layout/accessibility_captions_preview.xml b/res/layout/accessibility_captions_preview.xml
deleted file mode 100644
index 1818e64..0000000
--- a/res/layout/accessibility_captions_preview.xml
+++ /dev/null
@@ -1,30 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2020 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
--->
-
-<FrameLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content">
-
-    <ImageView
-        android:layout_width="match_parent"
-        android:layout_height="@dimen/captioning_preview_height"
-        android:contentDescription="@null"
-        android:scaleType="fitCenter"
-        android:src="@drawable/accessibility_captions" />
-
-</FrameLayout>
diff --git a/res/layout/dialog_single_radio_choice_list_item.xml b/res/layout/dialog_single_radio_choice_list_item.xml
index 49ef352..106a8a5 100644
--- a/res/layout/dialog_single_radio_choice_list_item.xml
+++ b/res/layout/dialog_single_radio_choice_list_item.xml
@@ -55,7 +55,7 @@
 
     <ImageView
         android:id="@+id/image"
-        android:layout_width="@dimen/accessibility_imageview_size"
+        android:layout_width="match_parent"
         android:layout_height="@dimen/accessibility_imageview_size"
         android:layout_marginTop="16dp"
         android:scaleType="fitStart"
diff --git a/res/values/strings.xml b/res/values/strings.xml
index aec90e1..7189401 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -5259,8 +5259,18 @@
     <string name="select_to_speak_summary">Tap items on your screen to hear them read aloud</string>
     <!-- Title for the accessibility preference screen to enable video captioning. [CHAR LIMIT=35] -->
     <string name="accessibility_captioning_title">Caption preferences</string>
+    <!-- Title for accessibility captioning footer. [CHAR LIMIT=60] -->
+    <string name="accessibility_captioning_about_title">About caption preferences</string>
+    <!-- Accessibility captioning footer link content description [CHAR LIMIT=NONE] -->
+    <string name="accessibility_captioning_footer_learn_more_content_description">Learn more about caption preferences</string>
     <!-- Title for the accessibility preference screen to enable screen magnification. [CHAR LIMIT=35] -->
     <string name="accessibility_screen_magnification_title">Magnification</string>
+    <!-- Title for accessibility shortcut preference for magnification. [CHAR LIMIT=60] -->
+    <string name="accessibility_screen_magnification_shortcut_title">Magnification shortcut</string>
+    <!-- Title for screen magnification footer. [CHAR LIMIT=60] -->
+    <string name="accessibility_screen_magnification_about_title">About magnification</string>
+    <!-- Screen magnification footer link content description [CHAR LIMIT=NONE] -->
+    <string name="accessibility_screen_magnification_footer_learn_more_content_description">Learn more about magnification</string>
     <!-- Title for the accessibility preference screen to edit magnification area. [CHAR LIMIT=35] -->
     <string name="accessibility_magnification_mode_title">Magnification type</string>
     <!-- Message for the accessibility preference screen to edit magnification area dialog. [CHAR LIMIT=none] -->
@@ -5411,14 +5421,20 @@
     <string name="accessibility_button_title">Accessibility button</string>
     <!-- Title for the accessibility button & gesture page. [CHAR LIMIT=35] -->
     <string name="accessibility_button_gesture_title">Accessibility button &amp; gesture</string>
+    <!-- Title for the accessibility button footer. [CHAR LIMIT=35] -->
+    <string name="accessibility_button_about_title">About accessibility button</string>
+    <!-- Title for the accessibility button & gesture footer. [CHAR LIMIT=55] -->
+    <string name="accessibility_button_gesture_about_title">About accessibility button &amp; gesture</string>
+    <!-- Accessibility button & gestures footer link content description [CHAR LIMIT=NONE] -->
+    <string name="accessibility_button_gesture_footer_learn_more_content_description">Learn more about accessibility button &amp; gesture</string>
     <!-- Intro for the accessibility button page. [CHAR LIMIT=100] -->
     <string name="accessibility_button_intro">Using the accessibility button. The gesture isn\u2019t available with 3-button navigation.</string>
     <!-- Summary text for the accessibility button preference. [CHAR LIMIT=50] -->
     <string name="accessibility_button_summary">Quickly access accessibility features</string>
     <!-- Description for the accessibility button in gesture navigation. Explain how this page works. [CHAR LIMIT=NONE] -->
-    <string name="accessibility_button_gesture_description">Quickly access accessibility features from any screen.\n\nTo get started, go to accessibility settings and select a feature. Tap on the shortcut and select the accessibility button.\n\nTo use the accessibility button in the navigation bar instead, switch to 2-button navigation or 3-button navigation.</string>
+    <string name="accessibility_button_gesture_description">Quickly access accessibility features from any screen.\n\nTo get started, go to accessibility settings and select a feature. Tap on the shortcut and select the accessibility button or gesture.</string>
     <!-- Description for the accessibility button page. Explain how this page works. [CHAR LIMIT=NONE] -->
-    <string name="accessibility_button_description">Quickly access accessibility features from any screen. \n\nTo get started, go to accessibility settings and select a feature. Tap on the shortcut and select the accessibility button.</string>
+    <string name="accessibility_button_description">Quickly access accessibility features from any screen.\n\nTo get started, go to accessibility settings and select a feature. Tap on the shortcut and select the accessibility button.</string>
     <!-- Title for the button or gesture of the accessibility button. [CHAR LIMIT=35] -->
     <string name="accessibility_button_or_gesture_title">Use button or gesture</string>
     <!-- Title for the location of the accessibility button. [CHAR LIMIT=35] -->
@@ -5472,6 +5488,10 @@
     <string name="accessibility_timeout_2mins">2 minutes</string>
     <!-- Title for accessibility settings timeout item. [CHAR LIMIT=43] -->
     <string name="accessibility_setting_item_control_timeout_title">Time to take action (Accessibility timeout)</string>
+    <!-- Title for accessibility timeout footer. [CHAR LIMIT=65] -->
+    <string name="accessibility_control_timeout_about_title">About time to take action (Accessibility timeout)</string>
+    <!-- Accessibility timeout footer link content description [CHAR LIMIT=NONE] -->
+    <string name="accessibility_control_timeout_footer_learn_more_content_description">Learn more about time to take action (Accessibility timeout)</string>
     <!-- Title for accessibility preference to accessibility timeout. [CHAR LIMIT=35] -->
     <string name="accessibility_control_timeout_preference_title">Time to take action</string>
     <!-- Descriptive text for accessibility preference to accessibility control timeout. [CHAR LIMIT=NONE] -->
@@ -5483,6 +5503,8 @@
     <string name="accessibility_display_inversion_preference_title">Color inversion</string>
     <!-- Used in the accessibility service settings to control turning display color inversion on/off entirely. [CHAR LIMIT=NONE] -->
     <string name="accessibility_display_inversion_switch_title">Use color inversion</string>
+    <!-- Title for accessibility shortcut preference for color inversion. [CHAR LIMIT=60] -->
+    <string name="accessibility_display_inversion_shortcut_title">Color inversion shortcut</string>
     <!-- Subtitle for the accessibility preference to configure display color inversion. [CHAR LIMIT=NONE] -->
     <string name="accessibility_display_inversion_preference_subtitle">
         <![CDATA[Color inversion turns light screens dark.<br/><br/>
@@ -5496,6 +5518,10 @@
     </string>
     <!-- Title for accessibility preference for configuring feature that performs click action soon after mouse/trackpad pointer stops moving. [CHAR LIMIT=NONE] -->
     <string name="accessibility_autoclick_preference_title">Autoclick (dwell timing)</string>
+    <!-- Title for accessibility dwell timing footer. [CHAR LIMIT=NONE] -->
+    <string name="accessibility_autoclick_about_title">About autoclick (dwell timing)</string>
+    <!-- Accessibility dwell timing footer link content description [CHAR LIMIT=NONE] -->
+    <string name="accessibility_autoclick_footer_learn_more_content_description">Learn more about autoclick (dwell timing)</string>
     <!-- Footer text to explain what autoclick does -->
     <string name="accessibility_autoclick_description">Autoclick works with a connected mouse. You can set the mouse cursor to click automatically when the cursor stops moving for a certain amount of time.</string>
     <!-- Option heading to leave the auto click requirement for accessibility users at its default level. [CHAR LIMIT=50] -->
@@ -5534,6 +5560,16 @@
     <string name="accessibility_service_primary_open_title">Open <xliff:g id="accessibility_app_name" example="TalkBack">%1$s</xliff:g></string>
     <!-- Used in the Color correction settings screen to control turning on/off the feature entirely [CHAR LIMIT=60] -->
     <string name="accessibility_daltonizer_primary_switch_title">Use color correction</string>
+    <!-- Title for accessibility shortcut preference for color correction. [CHAR LIMIT=60] -->
+    <string name="accessibility_daltonizer_shortcut_title">Color correction shortcut</string>
+    <!-- Title for Color correction footer. [CHAR LIMIT=35] -->
+    <string name="accessibility_daltonizer_about_title">About color correction</string>
+    <!-- Color inversion footer link content description [CHAR LIMIT=NONE] -->
+    <string name="accessibility_daltonizer_footer_learn_more_content_description">Learn more about color correction</string>
+    <!-- Title for Color inversion footer. [CHAR LIMIT=35] -->
+    <string name="accessibility_color_inversion_about_title">About color inversion</string>
+    <!-- Color correction footer link content description [CHAR LIMIT=NONE] -->
+    <string name="accessibility_color_inversion_footer_learn_more_content_description">Learn more about color inversion</string>
     <!-- Title for Captions settings screen to control turning on/off the feature entirely [CHAR LIMIT=60] -->
     <string name="accessibility_caption_primary_switch_title">Show captions</string>
     <!-- Summary for Captions settings screen to control turning on/off the feature entirely [CHAR LIMIT=NONE] -->
@@ -5613,6 +5649,10 @@
     <string name="reduce_bright_colors_preference_title">Extra dim</string>
     <!-- Title for the activation switch of the Reduce Brightness feature. [CHAR LIMIT=NONE] -->
     <string name="reduce_bright_colors_switch_title">Make screen extra dim</string>
+    <!-- Title for accessibility shortcut preference for Reduce Brightness. [CHAR LIMIT=60] -->
+    <string name="reduce_bright_colors_shortcut_title">Extra dim shortcut</string>
+    <!-- Title for Reduce Brightness feature footer. [CHAR LIMIT=35] -->
+    <string name="reduce_bright_colors_about_title">About extra dim</string>
     <!-- Summary for the accessibility preference to configure Reduce Brightness feature. [CHAR LIMIT=NONE] -->
     <string name="reduce_bright_colors_preference_summary" product="default">Dim screen beyond your phone\u2019s minimum brightness</string>
     <!-- Summary for the accessibility preference to configure Reduce Brightness feature. [CHAR LIMIT=NONE] -->
@@ -11759,6 +11799,8 @@
     <string name="one_handed_title">One-handed mode</string>
     <!-- Preference Switch for enabling one handed [CHAR LIMIT=60] -->
     <string name="one_handed_mode_enabled">Use one-handed mode</string>
+    <!-- Title for accessibility shortcut preference for enabling one handed. [CHAR LIMIT=60] -->
+    <string name="one_handed_mode_shortcut_title">One-handed mode shortcut</string>
     <!-- Search keywords for "One-Handed" settings [CHAR_LIMIT=NONE] -->
     <string name="keywords_one_handed">reachability</string>
     <!-- Category title for one handed swipe down [CHAR_LIMIT=60] -->
diff --git a/res/xml/accessibility_button_settings.xml b/res/xml/accessibility_button_settings.xml
index 02b1c7d..86dd087 100644
--- a/res/xml/accessibility_button_settings.xml
+++ b/res/xml/accessibility_button_settings.xml
@@ -16,13 +16,10 @@
 
 <PreferenceScreen
     xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:settings="http://schemas.android.com/apk/res-auto"
-    android:title="@string/accessibility_button_title">
+    xmlns:settings="http://schemas.android.com/apk/res-auto">
 
-    <com.android.settingslib.widget.LayoutPreference
-        android:key="caption_preview"
-        android:title="@string/summary_placeholder"
-        android:layout="@layout/accessibility_button_preview"
+    <com.android.settingslib.widget.IllustrationPreference
+        android:key="accessibility_button_preview"
         android:selectable="false"
         settings:searchable="false"
         android:persistent="false"
@@ -38,6 +35,15 @@
         settings:controller="com.android.settings.accessibility.AccessibilityButtonLocationPreferenceController"/>
 
     <ListPreference
+        android:entries="@array/accessibility_button_gesture_selector_titles"
+        android:entryValues="@array/accessibility_button_gesture_selector_values"
+        android:key="accessibility_button_or_gesture"
+        android:title="@string/accessibility_button_or_gesture_title"
+        android:summary="%s"
+        android:persistent="false"
+        settings:controller="com.android.settings.accessibility.AccessibilityButtonGesturePreferenceController"/>
+
+    <ListPreference
         android:entries="@array/accessibility_button_size_selector_titles"
         android:entryValues="@array/accessibility_button_size_selector_values"
         android:key="accessibility_button_size"
@@ -61,7 +67,6 @@
 
     <com.android.settings.accessibility.AccessibilityFooterPreference
         android:key="accessibility_button_footer"
-        android:title="@string/accessibility_button_description"
         android:persistent="false"
         android:selectable="false"
         settings:searchable="false"
diff --git a/res/xml/accessibility_shortcuts_settings.xml b/res/xml/accessibility_shortcuts_settings.xml
index 465f96d..2863335 100644
--- a/res/xml/accessibility_shortcuts_settings.xml
+++ b/res/xml/accessibility_shortcuts_settings.xml
@@ -25,8 +25,8 @@
         android:fragment="com.android.settings.accessibility.AccessibilityButtonFragment"
         android:key="accessibility_button_preference"
         android:persistent="false"
-        android:title="@string/accessibility_button_title"
-        android:summary="@string/accessibility_button_summary"/>
+        android:summary="@string/accessibility_button_summary"
+        settings:controller="com.android.settings.accessibility.AccessibilityButtonPreferenceController"/>
 
     <SwitchPreference
         android:key="accessibility_shortcut_preference"
diff --git a/res/xml/captioning_settings.xml b/res/xml/captioning_settings.xml
index b397146..f5059e5 100644
--- a/res/xml/captioning_settings.xml
+++ b/res/xml/captioning_settings.xml
@@ -21,12 +21,11 @@
     android:persistent="false"
     android:title="@string/accessibility_captioning_title">
 
-    <com.android.settingslib.widget.LayoutPreference
+    <com.android.settingslib.widget.IllustrationPreference
         android:key="captions_preview"
-        android:layout="@layout/accessibility_captions_preview"
         android:persistent="false"
         android:selectable="false"
-        android:title="@string/summary_placeholder"
+        settings:lottie_rawRes="@drawable/accessibility_captions_banner"
         settings:searchable="false" />
 
     <com.android.settings.widget.SettingsMainSwitchPreference
diff --git a/src/com/android/settings/accessibility/AccessibilityButtonFooterPreferenceController.java b/src/com/android/settings/accessibility/AccessibilityButtonFooterPreferenceController.java
index de90374..55b8019 100644
--- a/src/com/android/settings/accessibility/AccessibilityButtonFooterPreferenceController.java
+++ b/src/com/android/settings/accessibility/AccessibilityButtonFooterPreferenceController.java
@@ -33,21 +33,26 @@
     }
 
     @Override
-    protected String getLabelName() {
-        return mContext.getString(R.string.accessibility_button_title);
+    protected String getLearnMoreContentDescription() {
+        return mContext.getString(
+            R.string.accessibility_button_gesture_footer_learn_more_content_description);
+    }
+
+    @Override
+    protected String getIntroductionTitle() {
+        return mContext.getString(R.string.accessibility_button_about_title);
     }
 
     @Override
     public void displayPreference(PreferenceScreen screen) {
         // Need to update footerPreference's data before super.displayPreference(), then it will use
         // data to update related property of footerPreference.
-        if (AccessibilityUtil.isGestureNavigateEnabled(mContext)) {
-            final AccessibilityFooterPreference footerPreference =
-                    screen.findPreference(getPreferenceKey());
-            footerPreference.setTitle(
-                    mContext.getString(R.string.accessibility_button_gesture_description));
-        }
-
+        final int titleResource = AccessibilityUtil.isGestureNavigateEnabled(mContext)
+                ? R.string.accessibility_button_gesture_description
+                : R.string.accessibility_button_description;
+        final AccessibilityFooterPreference footerPreference =
+                screen.findPreference(getPreferenceKey());
+        footerPreference.setTitle(titleResource);
         super.displayPreference(screen);
     }
 }
diff --git a/src/com/android/settings/accessibility/AccessibilityButtonFragment.java b/src/com/android/settings/accessibility/AccessibilityButtonFragment.java
index 4e067d8..2df11a9 100644
--- a/src/com/android/settings/accessibility/AccessibilityButtonFragment.java
+++ b/src/com/android/settings/accessibility/AccessibilityButtonFragment.java
@@ -17,6 +17,7 @@
 package com.android.settings.accessibility;
 
 import android.app.settings.SettingsEnums;
+import android.os.Bundle;
 
 import com.android.settings.R;
 import com.android.settings.dashboard.DashboardFragment;
@@ -30,6 +31,14 @@
     private static final String TAG = "AccessibilityButtonFragment";
 
     @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        final int titleResource = AccessibilityUtil.isGestureNavigateEnabled(getPrefContext())
+                ? R.string.accessibility_button_gesture_title : R.string.accessibility_button_title;
+        getActivity().setTitle(titleResource);
+    }
+
+    @Override
     protected int getPreferenceScreenResId() {
         return R.xml.accessibility_button_settings;
     }
diff --git a/src/com/android/settings/accessibility/AccessibilityButtonGesturePreferenceController.java b/src/com/android/settings/accessibility/AccessibilityButtonGesturePreferenceController.java
new file mode 100644
index 0000000..e6b49d0
--- /dev/null
+++ b/src/com/android/settings/accessibility/AccessibilityButtonGesturePreferenceController.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.accessibility;
+
+import android.content.Context;
+import android.provider.Settings;
+
+import androidx.preference.ListPreference;
+import androidx.preference.Preference;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+
+import com.google.common.primitives.Ints;
+
+import java.util.Optional;
+
+/** Preference controller that controls the button or gesture in accessibility button page. */
+public class AccessibilityButtonGesturePreferenceController extends BasePreferenceController
+        implements Preference.OnPreferenceChangeListener {
+
+    private Optional<Integer> mDefaultGesture = Optional.empty();
+
+    public AccessibilityButtonGesturePreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AccessibilityUtil.isGestureNavigateEnabled(mContext)
+                ? AVAILABLE : CONDITIONALLY_UNAVAILABLE;
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        final ListPreference listPreference = (ListPreference) preference;
+        final Integer value = Ints.tryParse((String) newValue);
+        if (value != null) {
+            Settings.Secure.putInt(mContext.getContentResolver(),
+                    Settings.Secure.ACCESSIBILITY_BUTTON_MODE, value);
+            updateState(listPreference);
+        }
+        return true;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        super.updateState(preference);
+        final ListPreference listPreference = (ListPreference) preference;
+
+        listPreference.setValue(getCurrentAccessibilityButtonMode());
+    }
+
+    private String getCurrentAccessibilityButtonMode() {
+        final int mode = Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.ACCESSIBILITY_BUTTON_MODE, getDefaultGestureValue());
+        return String.valueOf(mode);
+    }
+
+    private int getDefaultGestureValue() {
+        if (!mDefaultGesture.isPresent()) {
+            final String[] valuesList = mContext.getResources().getStringArray(
+                    R.array.accessibility_button_gesture_selector_values);
+            mDefaultGesture = Optional.of(Integer.parseInt(valuesList[0]));
+        }
+        return mDefaultGesture.get();
+    }
+}
diff --git a/src/com/android/settings/accessibility/AccessibilityButtonLocationPreferenceController.java b/src/com/android/settings/accessibility/AccessibilityButtonLocationPreferenceController.java
index ed7cb27..167e08f 100644
--- a/src/com/android/settings/accessibility/AccessibilityButtonLocationPreferenceController.java
+++ b/src/com/android/settings/accessibility/AccessibilityButtonLocationPreferenceController.java
@@ -18,7 +18,6 @@
 
 import android.content.Context;
 import android.provider.Settings;
-import android.util.ArrayMap;
 
 import androidx.preference.ListPreference;
 import androidx.preference.Preference;
@@ -28,16 +27,16 @@
 
 import com.google.common.primitives.Ints;
 
+import java.util.Optional;
+
 /** Preference controller that controls the preferred location in accessibility button page. */
 public class AccessibilityButtonLocationPreferenceController extends BasePreferenceController
         implements Preference.OnPreferenceChangeListener {
 
-    private final ArrayMap<String, String> mValueTitleMap = new ArrayMap<>();
-    private int mDefaultLocation;
+    private Optional<Integer> mDefaultLocation = Optional.empty();
 
     public AccessibilityButtonLocationPreferenceController(Context context, String preferenceKey) {
         super(context, preferenceKey);
-        initValueTitleMap();
     }
 
     @Override
@@ -68,22 +67,16 @@
 
     private String getCurrentAccessibilityButtonMode() {
         final int mode = Settings.Secure.getInt(mContext.getContentResolver(),
-                Settings.Secure.ACCESSIBILITY_BUTTON_MODE, mDefaultLocation);
+                Settings.Secure.ACCESSIBILITY_BUTTON_MODE, getDefaultLocationValue());
         return String.valueOf(mode);
     }
 
-    private void initValueTitleMap() {
-        if (mValueTitleMap.size() == 0) {
-            final String[] values = mContext.getResources().getStringArray(
+    private int getDefaultLocationValue() {
+        if (!mDefaultLocation.isPresent()) {
+            final String[] valuesList = mContext.getResources().getStringArray(
                     R.array.accessibility_button_location_selector_values);
-            final String[] titles = mContext.getResources().getStringArray(
-                    R.array.accessibility_button_location_selector_titles);
-            final int mapSize = values.length;
-
-            mDefaultLocation = Integer.parseInt(values[0]);
-            for (int i = 0; i < mapSize; i++) {
-                mValueTitleMap.put(values[i], titles[i]);
-            }
+            mDefaultLocation = Optional.of(Integer.parseInt(valuesList[0]));
         }
+        return mDefaultLocation.get();
     }
 }
diff --git a/src/com/android/settings/accessibility/AccessibilityButtonPreferenceController.java b/src/com/android/settings/accessibility/AccessibilityButtonPreferenceController.java
new file mode 100644
index 0000000..f076472
--- /dev/null
+++ b/src/com/android/settings/accessibility/AccessibilityButtonPreferenceController.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.accessibility;
+
+import android.content.Context;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+
+/**
+ * Preference controller for accessibility button preference.
+ */
+public class AccessibilityButtonPreferenceController extends BasePreferenceController {
+
+    public AccessibilityButtonPreferenceController(Context context, String key) {
+        super(context, key);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        final int titleResource = AccessibilityUtil.isGestureNavigateEnabled(mContext)
+                ? R.string.accessibility_button_gesture_title : R.string.accessibility_button_title;
+        final Preference preference = screen.findPreference(getPreferenceKey());
+        preference.setTitle(titleResource);
+
+    }
+}
diff --git a/src/com/android/settings/accessibility/AccessibilityButtonPreviewPreferenceController.java b/src/com/android/settings/accessibility/AccessibilityButtonPreviewPreferenceController.java
index 69a7a46..c9f3c43 100644
--- a/src/com/android/settings/accessibility/AccessibilityButtonPreviewPreferenceController.java
+++ b/src/com/android/settings/accessibility/AccessibilityButtonPreviewPreferenceController.java
@@ -23,7 +23,7 @@
 import android.os.Handler;
 import android.os.Looper;
 import android.provider.Settings;
-import android.widget.ImageView;
+import android.view.accessibility.AccessibilityManager;
 
 import androidx.annotation.VisibleForTesting;
 import androidx.preference.PreferenceScreen;
@@ -33,7 +33,7 @@
 import com.android.settingslib.core.lifecycle.LifecycleObserver;
 import com.android.settingslib.core.lifecycle.events.OnPause;
 import com.android.settingslib.core.lifecycle.events.OnResume;
-import com.android.settingslib.widget.LayoutPreference;
+import com.android.settingslib.widget.IllustrationPreference;
 
 /** Preference controller that controls the preview effect in accessibility button page. */
 public class AccessibilityButtonPreviewPreferenceController extends BasePreferenceController
@@ -46,10 +46,12 @@
     private final ContentResolver mContentResolver;
     @VisibleForTesting
     final ContentObserver mContentObserver;
-    private FloatingMenuLayerDrawable mFloatingMenuPreviewDrawable;
-
+    private AccessibilityLayerDrawable mAccessibilityPreviewDrawable;
     @VisibleForTesting
-    ImageView mPreview;
+    IllustrationPreference mIllustrationPreference;
+
+    private AccessibilityManager.TouchExplorationStateChangeListener
+            mTouchExplorationStateChangeListener;
 
     public AccessibilityButtonPreviewPreferenceController(Context context, String preferenceKey) {
         super(context, preferenceKey);
@@ -60,6 +62,9 @@
                 updatePreviewPreference();
             }
         };
+        mTouchExplorationStateChangeListener = isTouchExplorationEnabled -> {
+            updatePreviewPreference();
+        };
     }
 
     @Override
@@ -70,14 +75,16 @@
     @Override
     public void displayPreference(PreferenceScreen screen) {
         super.displayPreference(screen);
-        final LayoutPreference preference = screen.findPreference(getPreferenceKey());
-        mPreview = preference.findViewById(R.id.preview_image);
+        mIllustrationPreference = screen.findPreference(getPreferenceKey());
 
         updatePreviewPreference();
     }
 
     @Override
     public void onResume() {
+        final AccessibilityManager am = mContext.getSystemService(AccessibilityManager.class);
+        am.addTouchExplorationStateChangeListener(mTouchExplorationStateChangeListener);
+
         mContentResolver.registerContentObserver(
                 Settings.Secure.getUriFor(Settings.Secure.ACCESSIBILITY_BUTTON_MODE),
                 /* notifyForDescendants= */ false, mContentObserver);
@@ -91,6 +98,9 @@
 
     @Override
     public void onPause() {
+        final AccessibilityManager am = mContext.getSystemService(AccessibilityManager.class);
+        am.removeTouchExplorationStateChangeListener(mTouchExplorationStateChangeListener);
+
         mContentResolver.unregisterContentObserver(mContentObserver);
     }
 
@@ -103,24 +113,29 @@
             final int floatingMenuIconId = (size == SMALL_SIZE)
                     ? R.drawable.accessibility_button_preview_small_floating_menu
                     : R.drawable.accessibility_button_preview_large_floating_menu;
-
-            mPreview.setImageDrawable(getFloatingMenuPreviewDrawable(floatingMenuIconId, opacity));
-            // Only change opacity(alpha) would not invoke redraw view, need to invalidate manually.
-            mPreview.invalidate();
+            mIllustrationPreference.setImageDrawable(
+                    getAccessibilityPreviewDrawable(floatingMenuIconId, opacity));
+        } else if (AccessibilityUtil.isGestureNavigateEnabled(mContext)) {
+            mIllustrationPreference.setImageDrawable(mContext.getDrawable(
+                    AccessibilityUtil.isTouchExploreEnabled(mContext)
+                            ? R.drawable.accessibility_button_preview_three_finger
+                            : R.drawable.accessibility_button_preview_two_finger));
         } else {
-            mPreview.setImageDrawable(
+            mIllustrationPreference.setImageDrawable(
                     mContext.getDrawable(R.drawable.accessibility_button_navigation));
         }
     }
 
-    private Drawable getFloatingMenuPreviewDrawable(int resId, int opacity) {
-        if (mFloatingMenuPreviewDrawable == null) {
-            mFloatingMenuPreviewDrawable = FloatingMenuLayerDrawable.createLayerDrawable(
+    private Drawable getAccessibilityPreviewDrawable(int resId, int opacity) {
+        if (mAccessibilityPreviewDrawable == null) {
+            mAccessibilityPreviewDrawable = AccessibilityLayerDrawable.createLayerDrawable(
                     mContext, resId, opacity);
         } else {
-            mFloatingMenuPreviewDrawable.updateLayerDrawable(mContext, resId, opacity);
+            mAccessibilityPreviewDrawable.updateLayerDrawable(mContext, resId, opacity);
+            // Only change alpha (opacity) value did not change drawable id. It needs to force to
+            // redraw.
+            mAccessibilityPreviewDrawable.invalidateSelf();
         }
-
-        return mFloatingMenuPreviewDrawable;
+        return mAccessibilityPreviewDrawable;
     }
 }
diff --git a/src/com/android/settings/accessibility/AccessibilityControlTimeoutFooterPreferenceController.java b/src/com/android/settings/accessibility/AccessibilityControlTimeoutFooterPreferenceController.java
index 0e65ac5..498b767 100644
--- a/src/com/android/settings/accessibility/AccessibilityControlTimeoutFooterPreferenceController.java
+++ b/src/com/android/settings/accessibility/AccessibilityControlTimeoutFooterPreferenceController.java
@@ -31,8 +31,14 @@
     }
 
     @Override
-    protected String getLabelName() {
-        return mContext.getString(R.string.accessibility_setting_item_control_timeout_title);
+    protected String getLearnMoreContentDescription() {
+        return mContext.getString(
+            R.string.accessibility_control_timeout_footer_learn_more_content_description);
+    }
+
+    @Override
+    protected String getIntroductionTitle() {
+        return mContext.getString(R.string.accessibility_control_timeout_about_title);
     }
 
     @Override
diff --git a/src/com/android/settings/accessibility/AccessibilityDialogUtils.java b/src/com/android/settings/accessibility/AccessibilityDialogUtils.java
index ffe5d6d..a9ba14a 100644
--- a/src/com/android/settings/accessibility/AccessibilityDialogUtils.java
+++ b/src/com/android/settings/accessibility/AccessibilityDialogUtils.java
@@ -344,12 +344,11 @@
 
     private static void initSoftwareShortcut(Context context, View view) {
         final View dialogView = view.findViewById(R.id.software_shortcut);
-        final CharSequence title = context.getText(
-                R.string.accessibility_shortcut_edit_dialog_title_software);
         final TextView summary = dialogView.findViewById(R.id.summary);
         final int lineHeight = summary.getLineHeight();
 
-        setupShortcutWidget(dialogView, title,
+        setupShortcutWidget(dialogView,
+                retrieveTitle(context),
                 retrieveSoftwareShortcutSummary(context, lineHeight),
                 retrieveSoftwareShortcutImageResId(context));
     }
@@ -398,20 +397,49 @@
         return sb;
     }
 
+    private static CharSequence retrieveTitle(Context context) {
+        int resId;
+        if (AccessibilityUtil.isFloatingMenuEnabled(context)) {
+            resId = R.string.accessibility_shortcut_edit_dialog_title_software;
+        } else if (AccessibilityUtil.isGestureNavigateEnabled(context)) {
+            resId = R.string.accessibility_shortcut_edit_dialog_title_software_by_gesture;
+        } else {
+            resId = R.string.accessibility_shortcut_edit_dialog_title_software;
+        }
+        return context.getText(resId);
+    }
+
     private static CharSequence retrieveSoftwareShortcutSummary(Context context, int lineHeight) {
         final SpannableStringBuilder sb = new SpannableStringBuilder();
-        if (!AccessibilityUtil.isFloatingMenuEnabled(context)) {
+        if (AccessibilityUtil.isFloatingMenuEnabled(context)) {
+            sb.append(getCustomizeAccessibilityButtonLink(context));
+        } else if (AccessibilityUtil.isGestureNavigateEnabled(context)) {
+            final int resId = AccessibilityUtil.isTouchExploreEnabled(context)
+                    ? R.string.accessibility_shortcut_edit_dialog_summary_software_gesture_talkback
+                    : R.string.accessibility_shortcut_edit_dialog_summary_software_gesture;
+            sb.append(context.getText(resId));
+            sb.append("\n\n");
+            sb.append(getCustomizeAccessibilityButtonLink(context));
+        } else {
             sb.append(getSummaryStringWithIcon(context, lineHeight));
             sb.append("\n\n");
+            sb.append(getCustomizeAccessibilityButtonLink(context));
         }
-        sb.append(getCustomizeAccessibilityButtonLink(context));
         return sb;
     }
 
     private static int retrieveSoftwareShortcutImageResId(Context context) {
-        return AccessibilityUtil.isFloatingMenuEnabled(context)
-                ? R.drawable.accessibility_shortcut_type_software_floating
-                : R.drawable.accessibility_shortcut_type_software;
+        int resId;
+        if (AccessibilityUtil.isFloatingMenuEnabled(context)) {
+            resId = R.drawable.accessibility_shortcut_type_software_floating;
+        } else if (AccessibilityUtil.isGestureNavigateEnabled(context)) {
+            resId = AccessibilityUtil.isTouchExploreEnabled(context)
+                    ? R.drawable.accessibility_shortcut_type_software_gesture_talkback
+                    : R.drawable.accessibility_shortcut_type_software_gesture;
+        } else {
+            resId = R.drawable.accessibility_shortcut_type_software;
+        }
+        return resId;
     }
 
     private static CharSequence getCustomizeAccessibilityButtonLink(Context context) {
@@ -422,7 +450,6 @@
                 .launch();
         final AnnotationSpan.LinkInfo linkInfo = new AnnotationSpan.LinkInfo(
                 AnnotationSpan.LinkInfo.DEFAULT_ANNOTATION, linkListener);
-
         return AnnotationSpan.linkify(context.getText(
                 R.string.accessibility_shortcut_edit_dialog_summary_software_floating), linkInfo);
     }
diff --git a/src/com/android/settings/accessibility/AccessibilityFooterPreferenceController.java b/src/com/android/settings/accessibility/AccessibilityFooterPreferenceController.java
index e3422e4..08e5906 100644
--- a/src/com/android/settings/accessibility/AccessibilityFooterPreferenceController.java
+++ b/src/com/android/settings/accessibility/AccessibilityFooterPreferenceController.java
@@ -21,14 +21,18 @@
 
 import androidx.preference.PreferenceScreen;
 
-import com.android.settings.R;
 import com.android.settings.core.BasePreferenceController;
 import com.android.settingslib.HelpUtils;
 
 /**
- * Base class for accessibility preference footer.
+ * Preference controller that controls the help link and customizes the preference title in {@link
+ * AccessibilityFooterPreference}.
  */
-public abstract class AccessibilityFooterPreferenceController extends BasePreferenceController {
+public class AccessibilityFooterPreferenceController extends BasePreferenceController {
+
+    private int mHelpResource;
+    private String mLearnMoreContentDescription;
+    private String mIntroductionTitle;
 
     public AccessibilityFooterPreferenceController(Context context, String key) {
         super(context, key);
@@ -49,23 +53,55 @@
     }
 
     /**
-     * Override this if showing a help item in the footer bar, by returning the resource id.
+     * Setups a help item in the {@link AccessibilityFooterPreference} with specific content
+     * description.
+     */
+    public void setupHelpLink(int helpResource, String learnMoreContentDescription) {
+        mHelpResource = helpResource;
+        mLearnMoreContentDescription = learnMoreContentDescription;
+    }
+
+    /**
+     * Overrides this if showing a help item in the {@link AccessibilityFooterPreference}, by
+     * returning the resource id.
      *
      * @return the resource id for the help url
      */
     protected int getHelpResource() {
-        return 0;
+        return mHelpResource;
     }
 
-    /** Returns the accessibility feature name. */
-    protected abstract String getLabelName();
+    /**
+     * Overrides this if showing a help item in the {@link AccessibilityFooterPreference} with
+     * specific content description.
+     *
+     * @return the content description for the help url
+     */
+    protected String getLearnMoreContentDescription() {
+        return mLearnMoreContentDescription;
+    }
+
+    /**
+     * Sets the announcement the specific features introduction in the {@link
+     * AccessibilityFooterPreference}.
+     */
+    public void setIntroductionTitle(String introductionTitle) {
+        mIntroductionTitle = introductionTitle;
+    }
+
+    /**
+     * Overrides this if announcement the specific features introduction in the {@link
+     * AccessibilityFooterPreference}.
+     *
+     * @return the extended content description for specific features introduction
+     */
+    protected String getIntroductionTitle() {
+        return mIntroductionTitle;
+    }
 
     private void updateFooterPreferences(AccessibilityFooterPreference footerPreference) {
         final StringBuffer sb = new StringBuffer();
-        sb.append(mContext.getString(
-                R.string.accessibility_introduction_title, getLabelName()))
-                .append("\n\n")
-                .append(footerPreference.getTitle());
+        sb.append(getIntroductionTitle()).append("\n\n").append(footerPreference.getTitle());
         footerPreference.setContentDescription(sb);
 
         if (getHelpResource() != 0) {
@@ -75,10 +111,10 @@
                         mContext.getClass().getName());
                 view.startActivityForResult(helpIntent, 0);
             });
-
-            final String learnMoreContentDescription = mContext.getString(
-                    R.string.footer_learn_more_content_description, getLabelName());
-            footerPreference.setLearnMoreContentDescription(learnMoreContentDescription);
+            footerPreference.setLearnMoreContentDescription(getLearnMoreContentDescription());
+            footerPreference.setLinkEnabled(true);
+        } else {
+            footerPreference.setLinkEnabled(false);
         }
     }
 }
diff --git a/src/com/android/settings/accessibility/AccessibilityGestureNavigationTutorial.java b/src/com/android/settings/accessibility/AccessibilityGestureNavigationTutorial.java
index f8cdcb3..bc2e05d 100644
--- a/src/com/android/settings/accessibility/AccessibilityGestureNavigationTutorial.java
+++ b/src/com/android/settings/accessibility/AccessibilityGestureNavigationTutorial.java
@@ -27,6 +27,7 @@
 import android.graphics.drawable.Drawable;
 import android.text.Spannable;
 import android.text.SpannableString;
+import android.text.SpannableStringBuilder;
 import android.text.style.ImageSpan;
 import android.view.Gravity;
 import android.view.LayoutInflater;
@@ -323,8 +324,7 @@
     }
 
     private static TutorialPage createSoftwareTutorialPage(@NonNull Context context) {
-        final CharSequence title = context.getText(
-                R.string.accessibility_tutorial_dialog_title_button);
+        final CharSequence title = getSoftwareTitle(context);
         final ImageView image = createSoftwareImage(context);
         final CharSequence instruction = getSoftwareInstruction(context);
         final ImageView indicatorIcon =
@@ -382,18 +382,46 @@
     }
 
     private static ImageView createSoftwareImage(Context context) {
-        final int resId = AccessibilityUtil.isFloatingMenuEnabled(context)
-                ? R.drawable.accessibility_shortcut_type_software_floating
-                : R.drawable.accessibility_shortcut_type_software;
-
+        int resId;
+        if (AccessibilityUtil.isFloatingMenuEnabled(context)) {
+            resId = R.drawable.accessibility_shortcut_type_software_floating;
+        } else if (AccessibilityUtil.isGestureNavigateEnabled(context)) {
+            resId = AccessibilityUtil.isTouchExploreEnabled(context)
+                    ? R.drawable.accessibility_shortcut_type_software_gesture_talkback
+                    : R.drawable.accessibility_shortcut_type_software_gesture;
+        } else {
+            resId = R.drawable.accessibility_shortcut_type_software;
+        }
         return createImageView(context, resId);
     }
 
+    private static CharSequence getSoftwareTitle(Context context) {
+        int resId;
+        if (AccessibilityUtil.isFloatingMenuEnabled(context)) {
+            resId = R.string.accessibility_tutorial_dialog_title_button;
+        } else if (AccessibilityUtil.isGestureNavigateEnabled(context)) {
+            resId = R.string.accessibility_tutorial_dialog_title_gesture;
+        } else {
+            resId = R.string.accessibility_tutorial_dialog_title_button;
+        }
+        return context.getText(resId);
+    }
+
     private static CharSequence getSoftwareInstruction(Context context) {
-        return AccessibilityUtil.isFloatingMenuEnabled(context)
-                ? context.getText(R.string.accessibility_tutorial_dialog_message_floating_button)
-                : getSoftwareInstructionWithIcon(context,
-                        context.getText(R.string.accessibility_tutorial_dialog_message_button));
+        final SpannableStringBuilder sb = new SpannableStringBuilder();
+        if (AccessibilityUtil.isFloatingMenuEnabled(context)) {
+            final int resId = R.string.accessibility_tutorial_dialog_message_floating_button;
+            sb.append(context.getText(resId));
+        } else if (AccessibilityUtil.isGestureNavigateEnabled(context)) {
+            final int resId = AccessibilityUtil.isTouchExploreEnabled(context)
+                    ? R.string.accessibility_tutorial_dialog_message_gesture_talkback
+                    : R.string.accessibility_tutorial_dialog_message_gesture;
+            sb.append(context.getText(resId));
+        } else {
+            final int resId = R.string.accessibility_tutorial_dialog_message_button;
+            sb.append(getSoftwareInstructionWithIcon(context, context.getText(resId)));
+        }
+        return sb;
     }
 
     private static CharSequence getSoftwareInstructionWithIcon(Context context, CharSequence text) {
diff --git a/src/com/android/settings/accessibility/FloatingMenuLayerDrawable.java b/src/com/android/settings/accessibility/AccessibilityLayerDrawable.java
similarity index 76%
rename from src/com/android/settings/accessibility/FloatingMenuLayerDrawable.java
rename to src/com/android/settings/accessibility/AccessibilityLayerDrawable.java
index bfce114..b04a969 100644
--- a/src/com/android/settings/accessibility/FloatingMenuLayerDrawable.java
+++ b/src/com/android/settings/accessibility/AccessibilityLayerDrawable.java
@@ -27,10 +27,10 @@
 
 import java.util.Objects;
 
-/** LayerDrawable that contains device icon as background and floating menu icon as foreground. */
-public class FloatingMenuLayerDrawable extends LayerDrawable {
+/** LayerDrawable that contains device icon as background and given icon as foreground. */
+public class AccessibilityLayerDrawable extends LayerDrawable {
 
-    private FloatingMenuLayerDrawableState mState;
+    private AccessibilityLayerDrawableState mState;
 
     /**
      * Creates a new layer drawable with the list of specified layers.
@@ -38,23 +38,23 @@
      * @param layers a list of drawables to use as layers in this new drawable,
      *               must be non-null
      */
-    private FloatingMenuLayerDrawable(@NonNull Drawable[] layers) {
+    private AccessibilityLayerDrawable(@NonNull Drawable[] layers) {
         super(layers);
     }
 
     /**
-     * Create the {@link LayerDrawable} that contains device icon as background and floating menu
-     * icon with given {@code opacity} value as foreground.
+     * Create the {@link LayerDrawable} that contains device icon as background and given menu icon
+     * with given {@code opacity} value as foreground.
      *
      * @param context the valid context used to get the icon
-     * @param resId the resource ID of the floating menu icon
+     * @param resId the resource ID of the given icon
      * @param opacity the opacity to apply to the given icon
-     * @return the drawable that combines the device icon and the floating menu icon
+     * @return the drawable that combines the device icon and the given icon
      */
-    public static FloatingMenuLayerDrawable createLayerDrawable(Context context, int resId,
+    public static AccessibilityLayerDrawable createLayerDrawable(Context context, int resId,
             int opacity) {
         final Drawable bg = context.getDrawable(R.drawable.accessibility_button_preview_base);
-        final FloatingMenuLayerDrawable basicDrawable = new FloatingMenuLayerDrawable(
+        final AccessibilityLayerDrawable basicDrawable = new AccessibilityLayerDrawable(
                 new Drawable[]{bg, null});
 
         basicDrawable.updateLayerDrawable(context, resId, opacity);
@@ -66,7 +66,7 @@
      * value at index 1 layer.
      *
      * @param context the valid context used to get the icon
-     * @param resId the resource ID of the floating menu icon
+     * @param resId the resource ID of the given icon
      * @param opacity the opacity to apply to the given icon
      */
     public void updateLayerDrawable(Context context, int resId, int opacity) {
@@ -83,18 +83,18 @@
 
     /** Stores the constant state and data to the given drawable. */
     private void setConstantState(Context context, int resId, int opacity) {
-        mState = new FloatingMenuLayerDrawableState(context, resId, opacity);
+        mState = new AccessibilityLayerDrawableState(context, resId, opacity);
     }
 
-    /** {@link ConstantState} to store the data of {@link FloatingMenuLayerDrawable}. */
+    /** {@link ConstantState} to store the data of {@link AccessibilityLayerDrawable}. */
     @VisibleForTesting
-    static class FloatingMenuLayerDrawableState extends ConstantState {
+    static class AccessibilityLayerDrawableState extends ConstantState {
 
         private final Context mContext;
         private final int mResId;
         private final int mOpacity;
 
-        FloatingMenuLayerDrawableState(Context context, int resId, int opacity) {
+        AccessibilityLayerDrawableState(Context context, int resId, int opacity) {
             mContext = context;
             mResId = resId;
             mOpacity = opacity;
@@ -119,7 +119,7 @@
             if (o == null || getClass() != o.getClass()) {
                 return false;
             }
-            final FloatingMenuLayerDrawableState that = (FloatingMenuLayerDrawableState) o;
+            final AccessibilityLayerDrawableState that = (AccessibilityLayerDrawableState) o;
             return mResId == that.mResId
                     && mOpacity == that.mOpacity
                     && Objects.equals(mContext, that.mContext);
diff --git a/src/com/android/settings/accessibility/AccessibilityShortcutPreferenceFragment.java b/src/com/android/settings/accessibility/AccessibilityShortcutPreferenceFragment.java
index 127c7c6..22f037b 100644
--- a/src/com/android/settings/accessibility/AccessibilityShortcutPreferenceFragment.java
+++ b/src/com/android/settings/accessibility/AccessibilityShortcutPreferenceFragment.java
@@ -115,8 +115,7 @@
         mShortcutPreference.setKey(getShortcutPreferenceKey());
         mShortcutPreference.setOnClickCallback(this);
 
-        final CharSequence title = getString(R.string.accessibility_shortcut_title, getLabelName());
-        mShortcutPreference.setTitle(title);
+        updateShortcutTitle(mShortcutPreference);
         getPreferenceScreen().addPreference(mShortcutPreference);
 
         mTouchExplorationStateChangeListener = isTouchExplorationEnabled -> {
@@ -182,6 +181,11 @@
         }
     }
 
+    protected void updateShortcutTitle(ShortcutPreference shortcutPreference) {
+        final CharSequence title = getString(R.string.accessibility_shortcut_title, getLabelName());
+        shortcutPreference.setTitle(title);
+    }
+
     @Override
     public int getDialogMetricsCategory(int dialogId) {
         switch (dialogId) {
diff --git a/src/com/android/settings/accessibility/CaptionFooterPreferenceController.java b/src/com/android/settings/accessibility/CaptionFooterPreferenceController.java
index 4e50b89..495d395 100644
--- a/src/com/android/settings/accessibility/CaptionFooterPreferenceController.java
+++ b/src/com/android/settings/accessibility/CaptionFooterPreferenceController.java
@@ -30,12 +30,18 @@
     }
 
     @Override
-    protected String getLabelName() {
-        return mContext.getString(R.string.accessibility_captioning_title);
+    protected String getLearnMoreContentDescription() {
+        return mContext.getString(
+            R.string.accessibility_captioning_footer_learn_more_content_description);
     }
 
     @Override
-    protected int getHelpResource()  {
+    protected String getIntroductionTitle() {
+        return mContext.getString(R.string.accessibility_captioning_about_title);
+    }
+
+    @Override
+    protected int getHelpResource() {
         return R.string.help_url_caption;
     }
 }
diff --git a/src/com/android/settings/accessibility/ToggleAccessibilityServicePreferenceFragment.java b/src/com/android/settings/accessibility/ToggleAccessibilityServicePreferenceFragment.java
index 9349071..0e209aa 100644
--- a/src/com/android/settings/accessibility/ToggleAccessibilityServicePreferenceFragment.java
+++ b/src/com/android/settings/accessibility/ToggleAccessibilityServicePreferenceFragment.java
@@ -55,7 +55,6 @@
 import com.android.settings.R;
 import com.android.settings.accessibility.AccessibilityUtil.UserShortcutType;
 import com.android.settings.password.ConfirmDeviceCredentialActivity;
-import com.android.settings.widget.SettingsMainSwitchPreference;
 import com.android.settingslib.accessibility.AccessibilityUtils;
 
 import java.util.List;
@@ -222,15 +221,6 @@
     }
 
     @Override
-    protected void updateToggleServiceTitle(SettingsMainSwitchPreference switchPreference) {
-        final AccessibilityServiceInfo info = getAccessibilityServiceInfo();
-        final String switchBarText = (info == null) ? "" :
-                getString(R.string.accessibility_service_primary_switch_title,
-                        info.getResolveInfo().loadLabel(getPackageManager()));
-        switchPreference.setTitle(switchBarText);
-    }
-
-    @Override
     protected void updateSwitchBarToggleSwitch() {
         final boolean checked = isAccessibilityServiceEnabled();
         if (mToggleServiceSwitchPreference.isChecked() == checked) {
diff --git a/src/com/android/settings/accessibility/ToggleAutoclickFooterPreferenceController.java b/src/com/android/settings/accessibility/ToggleAutoclickFooterPreferenceController.java
index 053fa9d..962ffec 100644
--- a/src/com/android/settings/accessibility/ToggleAutoclickFooterPreferenceController.java
+++ b/src/com/android/settings/accessibility/ToggleAutoclickFooterPreferenceController.java
@@ -31,8 +31,14 @@
     }
 
     @Override
-    protected String getLabelName() {
-        return mContext.getString(R.string.accessibility_autoclick_preference_title);
+    protected String getLearnMoreContentDescription() {
+        return mContext.getString(
+            R.string.accessibility_autoclick_footer_learn_more_content_description);
+    }
+
+    @Override
+    protected String getIntroductionTitle() {
+        return mContext.getString(R.string.accessibility_autoclick_about_title);
     }
 
     @Override
diff --git a/src/com/android/settings/accessibility/ToggleColorInversionPreferenceFragment.java b/src/com/android/settings/accessibility/ToggleColorInversionPreferenceFragment.java
index b41bafd..419514f 100644
--- a/src/com/android/settings/accessibility/ToggleColorInversionPreferenceFragment.java
+++ b/src/com/android/settings/accessibility/ToggleColorInversionPreferenceFragment.java
@@ -38,8 +38,7 @@
 import java.util.List;
 
 /** Settings page for color inversion. */
-public class ToggleColorInversionPreferenceFragment extends
-        ToggleFeaturePreferenceFragment {
+public class ToggleColorInversionPreferenceFragment extends ToggleFeaturePreferenceFragment {
 
     private static final String ENABLED = Settings.Secure.ACCESSIBILITY_DISPLAY_INVERSION_ENABLED;
     private final Handler mHandler = new Handler();
@@ -73,6 +72,11 @@
     }
 
     @Override
+    protected void updateShortcutTitle(ShortcutPreference shortcutPreference) {
+        shortcutPreference.setTitle(R.string.accessibility_display_inversion_shortcut_title);
+    }
+
+    @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
             Bundle savedInstanceState) {
         mComponentName = COLOR_INVERSION_COMPONENT_NAME;
@@ -90,7 +94,20 @@
                 updateSwitchBarToggleSwitch();
             }
         };
-        return super.onCreateView(inflater, container, savedInstanceState);
+
+        final View view = super.onCreateView(inflater, container, savedInstanceState);
+        updateFooterPreference();
+        return view;
+    }
+
+    private void updateFooterPreference() {
+        final String title = getPrefContext().getString(
+                R.string.accessibility_color_inversion_about_title);
+        final String learnMoreContentDescription = getPrefContext().getString(
+                R.string.accessibility_color_inversion_footer_learn_more_content_description);
+        mFooterPreferenceController.setIntroductionTitle(title);
+        mFooterPreferenceController.setupHelpLink(getHelpResource(), learnMoreContentDescription);
+        mFooterPreferenceController.displayPreference(getPreferenceScreen());
     }
 
     @Override
diff --git a/src/com/android/settings/accessibility/ToggleDaltonizerPreferenceFragment.java b/src/com/android/settings/accessibility/ToggleDaltonizerPreferenceFragment.java
index 4bcf478..c9449d24 100644
--- a/src/com/android/settings/accessibility/ToggleDaltonizerPreferenceFragment.java
+++ b/src/com/android/settings/accessibility/ToggleDaltonizerPreferenceFragment.java
@@ -92,12 +92,20 @@
                 updateSwitchBarToggleSwitch();
             }
         };
-        return super.onCreateView(inflater, container, savedInstanceState);
+
+        final View view = super.onCreateView(inflater, container, savedInstanceState);
+        updateFooterPreference();
+        return view;
     }
 
-    @Override
-    public void onViewCreated(View view, Bundle savedInstanceState) {
-        super.onViewCreated(view, savedInstanceState);
+    private void updateFooterPreference() {
+        final String title = getPrefContext()
+                .getString(R.string.accessibility_daltonizer_about_title);
+        final String learnMoreContentDescription = getPrefContext()
+                .getString(R.string.accessibility_daltonizer_footer_learn_more_content_description);
+        mFooterPreferenceController.setIntroductionTitle(title);
+        mFooterPreferenceController.setupHelpLink(getHelpResource(), learnMoreContentDescription);
+        mFooterPreferenceController.displayPreference(getPreferenceScreen());
     }
 
     /** Customizes the order by preference key. */
@@ -168,6 +176,11 @@
     }
 
     @Override
+    protected void updateShortcutTitle(ShortcutPreference shortcutPreference) {
+        shortcutPreference.setTitle(R.string.accessibility_daltonizer_shortcut_title);
+    }
+
+    @Override
     int getUserShortcutTypes() {
         return AccessibilityUtil.getUserShortcutTypesFromSettings(getPrefContext(),
                 mComponentName);
diff --git a/src/com/android/settings/accessibility/ToggleFeaturePreferenceFragment.java b/src/com/android/settings/accessibility/ToggleFeaturePreferenceFragment.java
index 510f8d3..245f362 100644
--- a/src/com/android/settings/accessibility/ToggleFeaturePreferenceFragment.java
+++ b/src/com/android/settings/accessibility/ToggleFeaturePreferenceFragment.java
@@ -57,7 +57,6 @@
 import com.android.settings.utils.LocaleUtils;
 import com.android.settings.widget.SettingsMainSwitchBar;
 import com.android.settings.widget.SettingsMainSwitchPreference;
-import com.android.settingslib.HelpUtils;
 import com.android.settingslib.accessibility.AccessibilityUtils;
 import com.android.settingslib.widget.IllustrationPreference;
 import com.android.settingslib.widget.OnMainSwitchChangeListener;
@@ -78,6 +77,7 @@
     protected SettingsMainSwitchPreference mToggleServiceSwitchPreference;
     protected ShortcutPreference mShortcutPreference;
     protected Preference mSettingsPreference;
+    protected AccessibilityFooterPreferenceController mFooterPreferenceController;
     protected String mPreferenceKey;
 
     protected CharSequence mSettingsTitle;
@@ -284,7 +284,14 @@
     abstract int getUserShortcutTypes();
 
     protected void updateToggleServiceTitle(SettingsMainSwitchPreference switchPreference) {
-        switchPreference.setTitle(R.string.accessibility_service_primary_switch_title);
+        final CharSequence title =
+            getString(R.string.accessibility_service_primary_switch_title, mPackageName);
+        switchPreference.setTitle(title);
+    }
+
+    protected void updateShortcutTitle(ShortcutPreference shortcutPreference) {
+        final CharSequence title = getString(R.string.accessibility_shortcut_title, mPackageName);
+        shortcutPreference.setTitle(title);
     }
 
     protected abstract void onPreferenceToggled(String preferenceKey, boolean enabled);
@@ -434,8 +441,7 @@
         mShortcutPreference.setKey(getShortcutPreferenceKey());
         mShortcutPreference.setOnClickCallback(this);
 
-        final CharSequence title = getString(R.string.accessibility_shortcut_title, mPackageName);
-        mShortcutPreference.setTitle(title);
+        updateShortcutTitle(mShortcutPreference);
 
         final PreferenceCategory generalCategory = findPreference(KEY_GENERAL_CATEGORY);
         generalCategory.addPreference(mShortcutPreference);
@@ -463,33 +469,19 @@
         final PreferenceScreen screen = getPreferenceScreen();
         final CharSequence htmlDescription = Html.fromHtml(mHtmlDescription.toString(),
                 Html.FROM_HTML_MODE_COMPACT, mImageGetter, /* tagHandler= */ null);
-        final String iconContentDescription =
-                getString(R.string.accessibility_introduction_title, mPackageName);
 
         final AccessibilityFooterPreference htmlFooterPreference =
                 new AccessibilityFooterPreference(screen.getContext());
         htmlFooterPreference.setKey(KEY_HTML_DESCRIPTION_PREFERENCE);
         htmlFooterPreference.setSummary(htmlDescription);
-        htmlFooterPreference.setContentDescription(
-                generateFooterContentDescription(htmlDescription));
-
-        // Only framework tools support help link
-        if (getHelpResource() != 0) {
-            htmlFooterPreference.setLearnMoreAction(view -> {
-                final Intent helpIntent = HelpUtils.getHelpIntent(
-                        getContext(), getContext().getString(getHelpResource()),
-                        getContext().getClass().getName());
-                view.startActivityForResult(helpIntent, 0);
-            });
-
-            final String learnMoreContentDescription = getPrefContext().getString(
-                    R.string.footer_learn_more_content_description, mPackageName);
-            htmlFooterPreference.setLearnMoreContentDescription(learnMoreContentDescription);
-            htmlFooterPreference.setLinkEnabled(true);
-        } else {
-            htmlFooterPreference.setLinkEnabled(false);
-        }
         screen.addPreference(htmlFooterPreference);
+
+        // TODO(b/171272809): Migrate to DashboardFragment.
+        final String title = getString(R.string.accessibility_introduction_title, mPackageName);
+        mFooterPreferenceController = new AccessibilityFooterPreferenceController(
+            screen.getContext(), htmlFooterPreference.getKey());
+        mFooterPreferenceController.setIntroductionTitle(title);
+        mFooterPreferenceController.displayPreference(screen);
     }
 
     private void initFooterPreference() {
@@ -512,41 +504,22 @@
      *
      * @param screen The preference screen to add the footer preference
      * @param summary The summary of the preference summary.
-     * @param iconContentDescription The content description of icon in the footer.
+     * @param introductionTitle The title of introduction in the footer.
      */
     @VisibleForTesting
     void createFooterPreference(PreferenceScreen screen, CharSequence summary,
-            String iconContentDescription) {
+            String introductionTitle) {
         final AccessibilityFooterPreference footerPreference =
                 new AccessibilityFooterPreference(screen.getContext());
         footerPreference.setSummary(summary);
-        footerPreference.setContentDescription(
-                generateFooterContentDescription(summary));
-
-        // Only framework tools support help link
-        if (getHelpResource() != 0) {
-            footerPreference.setLearnMoreAction(view -> {
-                final Intent helpIntent = HelpUtils.getHelpIntent(
-                        getContext(), getContext().getString(getHelpResource()),
-                        getContext().getClass().getName());
-                view.startActivityForResult(helpIntent, 0);
-            });
-
-            final String learnMoreContentDescription = getPrefContext().getString(
-                    R.string.footer_learn_more_content_description, mPackageName);
-            footerPreference.setLearnMoreContentDescription(learnMoreContentDescription);
-        }
         screen.addPreference(footerPreference);
+
+        mFooterPreferenceController = new AccessibilityFooterPreferenceController(
+            screen.getContext(), footerPreference.getKey());
+        mFooterPreferenceController.setIntroductionTitle(introductionTitle);
+        mFooterPreferenceController.displayPreference(screen);
     }
 
-    private CharSequence generateFooterContentDescription(CharSequence footerContent) {
-        final StringBuffer sb = new StringBuffer();
-        sb.append(getPrefContext().getString(
-                R.string.accessibility_introduction_title, mPackageName))
-                .append("\n\n")
-                .append(footerContent);
-        return sb;
-    }
     @VisibleForTesting
     void setupEditShortcutDialog(Dialog dialog) {
         final View dialogSoftwareView = dialog.findViewById(R.id.software_shortcut);
@@ -611,6 +584,18 @@
         return value;
     }
 
+    private static CharSequence getSoftwareShortcutTypeSummary(Context context) {
+        int resId;
+        if (AccessibilityUtil.isFloatingMenuEnabled(context)) {
+            resId = R.string.accessibility_shortcut_edit_summary_software;
+        } else if (AccessibilityUtil.isGestureNavigateEnabled(context)) {
+            resId = R.string.accessibility_shortcut_edit_summary_software_gesture;
+        } else {
+            resId = R.string.accessibility_shortcut_edit_summary_software;
+        }
+        return context.getText(resId);
+    }
+
     protected CharSequence getShortcutTypeSummary(Context context) {
         if (!mShortcutPreference.isSettingsEditable()) {
             return context.getText(R.string.accessibility_shortcut_edit_dialog_title_hardware);
@@ -624,11 +609,8 @@
                 mComponentName.flattenToString(), UserShortcutType.SOFTWARE);
 
         final List<CharSequence> list = new ArrayList<>();
-        final CharSequence softwareTitle = context.getText(
-                R.string.accessibility_shortcut_edit_summary_software);
-
         if (hasShortcutType(shortcutTypes, UserShortcutType.SOFTWARE)) {
-            list.add(softwareTitle);
+            list.add(getSoftwareShortcutTypeSummary(context));
         }
         if (hasShortcutType(shortcutTypes, UserShortcutType.HARDWARE)) {
             final CharSequence hardwareTitle = context.getText(
@@ -638,7 +620,7 @@
 
         // Show software shortcut if first time to use.
         if (list.isEmpty()) {
-            list.add(softwareTitle);
+            list.add(getSoftwareShortcutTypeSummary(context));
         }
 
         return CaseMap.toTitle().wholeString().noLowercase().apply(Locale.getDefault(), /* iter= */
diff --git a/src/com/android/settings/accessibility/ToggleReduceBrightColorsPreferenceFragment.java b/src/com/android/settings/accessibility/ToggleReduceBrightColorsPreferenceFragment.java
index e60751e..81bd45a 100644
--- a/src/com/android/settings/accessibility/ToggleReduceBrightColorsPreferenceFragment.java
+++ b/src/com/android/settings/accessibility/ToggleReduceBrightColorsPreferenceFragment.java
@@ -86,6 +86,7 @@
         // Parent sets the title when creating the view, so set it after calling super
         mToggleServiceSwitchPreference.setTitle(R.string.reduce_bright_colors_switch_title);
         updateGeneralCategoryOrder();
+        updateFooterPreference();
         return view;
     }
 
@@ -101,6 +102,12 @@
         generalCategory.addPreference(persist);
     }
 
+    private void updateFooterPreference() {
+        final String title = getPrefContext().getString(R.string.reduce_bright_colors_about_title);
+        mFooterPreferenceController.setIntroductionTitle(title);
+        mFooterPreferenceController.displayPreference(getPreferenceScreen());
+    }
+
     @Override
     public void onViewCreated(View view, Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
@@ -135,7 +142,6 @@
         return R.xml.reduce_bright_colors_settings;
     }
 
-
     @Override
     protected void onPreferenceToggled(String preferenceKey, boolean enabled) {
         AccessibilityStatsLogUtils.logAccessibilityServiceEnabled(mComponentName, enabled);
@@ -155,6 +161,11 @@
     }
 
     @Override
+    protected void updateShortcutTitle(ShortcutPreference shortcutPreference) {
+        shortcutPreference.setTitle(R.string.reduce_bright_colors_shortcut_title);
+    }
+
+    @Override
     int getUserShortcutTypes() {
         return AccessibilityUtil.getUserShortcutTypesFromSettings(getPrefContext(),
                 mComponentName);
diff --git a/src/com/android/settings/accessibility/ToggleScreenMagnificationPreferenceFragment.java b/src/com/android/settings/accessibility/ToggleScreenMagnificationPreferenceFragment.java
index 9266f72..1c7ce39 100644
--- a/src/com/android/settings/accessibility/ToggleScreenMagnificationPreferenceFragment.java
+++ b/src/com/android/settings/accessibility/ToggleScreenMagnificationPreferenceFragment.java
@@ -95,7 +95,20 @@
             removeDialog(DialogEnums.EDIT_SHORTCUT);
             mShortcutPreference.setSummary(getShortcutTypeSummary(getPrefContext()));
         };
-        return super.onCreateView(inflater, container, savedInstanceState);
+
+        final View view = super.onCreateView(inflater, container, savedInstanceState);
+        updateFooterPreference();
+        return view;
+    }
+
+    private void updateFooterPreference() {
+        final String title = getPrefContext().getString(
+                R.string.accessibility_screen_magnification_about_title);
+        final String learnMoreContentDescription = getPrefContext().getString(
+                R.string.accessibility_screen_magnification_footer_learn_more_content_description);
+        mFooterPreferenceController.setIntroductionTitle(title);
+        mFooterPreferenceController.setupHelpLink(getHelpResource(), learnMoreContentDescription);
+        mFooterPreferenceController.displayPreference(getPreferenceScreen());
     }
 
     @Override
@@ -252,6 +265,18 @@
         return (value & type) == type;
     }
 
+    private static CharSequence getSoftwareShortcutTypeSummary(Context context) {
+        int resId;
+        if (AccessibilityUtil.isFloatingMenuEnabled(context)) {
+            resId = R.string.accessibility_shortcut_edit_summary_software;
+        } else if (AccessibilityUtil.isGestureNavigateEnabled(context)) {
+            resId = R.string.accessibility_shortcut_edit_summary_software_gesture;
+        } else {
+            resId = R.string.accessibility_shortcut_edit_summary_software;
+        }
+        return context.getText(resId);
+    }
+
     @Override
     protected CharSequence getShortcutTypeSummary(Context context) {
         if (!mShortcutPreference.isChecked()) {
@@ -262,18 +287,14 @@
                 MAGNIFICATION_CONTROLLER_NAME, UserShortcutType.SOFTWARE);
 
         final List<CharSequence> list = new ArrayList<>();
-        final CharSequence softwareTitle = context.getText(
-                R.string.accessibility_shortcut_edit_summary_software);
-
         if (hasShortcutType(shortcutTypes, UserShortcutType.SOFTWARE)) {
-            list.add(softwareTitle);
+            list.add(getSoftwareShortcutTypeSummary(context));
         }
         if (hasShortcutType(shortcutTypes, UserShortcutType.HARDWARE)) {
             final CharSequence hardwareTitle = context.getText(
                     R.string.accessibility_shortcut_hardware_keyword);
             list.add(hardwareTitle);
         }
-
         if (hasShortcutType(shortcutTypes, UserShortcutType.TRIPLETAP)) {
             final CharSequence tripleTapTitle = context.getText(
                     R.string.accessibility_shortcut_triple_tap_keyword);
@@ -282,7 +303,7 @@
 
         // Show software shortcut if first time to use.
         if (list.isEmpty()) {
-            list.add(softwareTitle);
+            list.add(getSoftwareShortcutTypeSummary(context));
         }
 
         return CaseMap.toTitle().wholeString().noLowercase().apply(Locale.getDefault(), /* iter= */
@@ -397,6 +418,11 @@
     }
 
     @Override
+    protected void updateShortcutTitle(ShortcutPreference shortcutPreference) {
+        shortcutPreference.setTitle(R.string.accessibility_screen_magnification_shortcut_title);
+    }
+
+    @Override
     protected void updateShortcutPreference() {
         final int shortcutTypes = PreferredShortcuts.retrieveUserShortcutType(getPrefContext(),
                 MAGNIFICATION_CONTROLLER_NAME, UserShortcutType.SOFTWARE);
diff --git a/src/com/android/settings/core/InstrumentedPreferenceFragment.java b/src/com/android/settings/core/InstrumentedPreferenceFragment.java
index f6115fc..48e5176 100644
--- a/src/com/android/settings/core/InstrumentedPreferenceFragment.java
+++ b/src/com/android/settings/core/InstrumentedPreferenceFragment.java
@@ -158,8 +158,7 @@
             switch (newState) {
                 case RecyclerView.SCROLL_STATE_DRAGGING:
                     final Configuration.Builder builder =
-                            new Configuration.Builder(CUJ_SETTINGS_PAGE_SCROLL)
-                                    .setView(recyclerView)
+                            Configuration.Builder.withView(CUJ_SETTINGS_PAGE_SCROLL, recyclerView)
                                     .setTag(mClassName);
                     mMonitor.begin(builder);
                     break;
diff --git a/src/com/android/settings/emergency/MoreSettingsPreferenceController.java b/src/com/android/settings/emergency/MoreSettingsPreferenceController.java
index cbb95a6..d945b21 100644
--- a/src/com/android/settings/emergency/MoreSettingsPreferenceController.java
+++ b/src/com/android/settings/emergency/MoreSettingsPreferenceController.java
@@ -115,7 +115,7 @@
                 .logClickedPreference(mPreference, getMetricsCategory());
         final Intent intent = new Intent(mIntent)
                 .addCategory(Intent.CATEGORY_LAUNCHER)
-                .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+                .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
         Bundle bundle = new Bundle();
         bundle.putString(EXTRA_KEY_ATTRIBUTION, mContext.getPackageName());
         mContext.startActivity(intent, bundle);
diff --git a/src/com/android/settings/fuelgauge/PowerUsageAdvanced.java b/src/com/android/settings/fuelgauge/PowerUsageAdvanced.java
index 7c69618..afbb71f 100644
--- a/src/com/android/settings/fuelgauge/PowerUsageAdvanced.java
+++ b/src/com/android/settings/fuelgauge/PowerUsageAdvanced.java
@@ -19,8 +19,11 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.database.ContentObserver;
+import android.net.Uri;
 import android.os.BatteryManager;
 import android.os.Bundle;
+import android.os.Handler;
 import android.provider.SearchIndexableResource;
 import android.util.Log;
 
@@ -31,6 +34,7 @@
 
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
+import com.android.settings.fuelgauge.BatteryBroadcastReceiver;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settingslib.core.AbstractPreferenceController;
@@ -63,6 +67,17 @@
     private BatteryChartPreferenceController mBatteryChartPreferenceController;
     private BatteryAppListPreferenceController mBatteryAppListPreferenceController;
 
+    private final ContentObserver mBatteryObserver =
+            new ContentObserver(new Handler()) {
+            @Override
+            public void onChange(boolean selfChange) {
+                Log.d(TAG, "onBatteryContentChange: " + selfChange);
+                mIsChartDataLoaded = false;
+                restartBatteryStatsLoader(
+                        BatteryBroadcastReceiver.BatteryUpdateType.MANUAL);
+            }
+    };
+
     @Override
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
@@ -104,6 +119,20 @@
         super.onPause();
         // Resets the flag to reload usage data in onResume() callback.
         mIsChartDataLoaded = false;
+        final Uri uri = mPowerUsageFeatureProvider.getBatteryHistoryUri();
+        if (uri != null) {
+            getContext().getContentResolver().unregisterContentObserver(mBatteryObserver);
+        }
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        final Uri uri = mPowerUsageFeatureProvider.getBatteryHistoryUri();
+        if (uri != null) {
+            getContext().getContentResolver().registerContentObserver(
+                    uri, /*notifyForDescendants*/ true, mBatteryObserver);
+        }
     }
 
     @Override
diff --git a/src/com/android/settings/fuelgauge/PowerUsageFeatureProvider.java b/src/com/android/settings/fuelgauge/PowerUsageFeatureProvider.java
index 61abe6b..d914825 100644
--- a/src/com/android/settings/fuelgauge/PowerUsageFeatureProvider.java
+++ b/src/com/android/settings/fuelgauge/PowerUsageFeatureProvider.java
@@ -18,6 +18,7 @@
 
 import android.content.Context;
 import android.content.Intent;
+import android.net.Uri;
 import android.util.SparseIntArray;
 
 import com.android.internal.os.BatterySipper;
@@ -141,4 +142,9 @@
      * Returns battery history data with corresponding timestamp key.
      */
     Map<Long, Map<String, BatteryHistEntry>> getBatteryHistory(Context context);
+
+    /**
+     * Returns {@link Uri} to monitor battery history data is update.
+     */
+    Uri getBatteryHistoryUri();
 }
diff --git a/src/com/android/settings/fuelgauge/PowerUsageFeatureProviderImpl.java b/src/com/android/settings/fuelgauge/PowerUsageFeatureProviderImpl.java
index 1dcdab0..895bbb2 100644
--- a/src/com/android/settings/fuelgauge/PowerUsageFeatureProviderImpl.java
+++ b/src/com/android/settings/fuelgauge/PowerUsageFeatureProviderImpl.java
@@ -19,6 +19,7 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.net.Uri;
 import android.os.Process;
 import android.util.SparseIntArray;
 
@@ -167,4 +168,9 @@
     public Map<Long, Map<String, BatteryHistEntry>> getBatteryHistory(Context context) {
         return null;
     }
+
+    @Override
+    public Uri getBatteryHistoryUri() {
+        return null;
+    }
 }
diff --git a/src/com/android/settings/gestures/OneHandedActionPullDownPrefController.java b/src/com/android/settings/gestures/OneHandedActionPullDownPrefController.java
index e17165b..26b3763 100644
--- a/src/com/android/settings/gestures/OneHandedActionPullDownPrefController.java
+++ b/src/com/android/settings/gestures/OneHandedActionPullDownPrefController.java
@@ -93,7 +93,8 @@
             return;
         }
         if (uri.equals(OneHandedSettingsUtils.ONE_HANDED_MODE_ENABLED_URI)
-                || uri.equals(OneHandedSettingsUtils.SHORTCUT_ENABLED_URI)) {
+                || uri.equals(OneHandedSettingsUtils.SOFTWARE_SHORTCUT_ENABLED_URI)
+                || uri.equals(OneHandedSettingsUtils.HARDWARE_SHORTCUT_ENABLED_URI)) {
             mPreference.setEnabled(OneHandedSettingsUtils.canEnableController(mContext));
         } else if (uri.equals(OneHandedSettingsUtils.SHOW_NOTIFICATION_ENABLED_URI)) {
             updateState(mPreference);
diff --git a/src/com/android/settings/gestures/OneHandedActionShowNotificationPrefController.java b/src/com/android/settings/gestures/OneHandedActionShowNotificationPrefController.java
index 9f56a14..524c135 100644
--- a/src/com/android/settings/gestures/OneHandedActionShowNotificationPrefController.java
+++ b/src/com/android/settings/gestures/OneHandedActionShowNotificationPrefController.java
@@ -93,7 +93,8 @@
             return;
         }
         if (uri.equals(OneHandedSettingsUtils.ONE_HANDED_MODE_ENABLED_URI)
-                || uri.equals(OneHandedSettingsUtils.SHORTCUT_ENABLED_URI)) {
+                || uri.equals(OneHandedSettingsUtils.SOFTWARE_SHORTCUT_ENABLED_URI)
+                || uri.equals(OneHandedSettingsUtils.HARDWARE_SHORTCUT_ENABLED_URI)) {
             mPreference.setEnabled(OneHandedSettingsUtils.canEnableController(mContext));
         } else if (uri.equals(OneHandedSettingsUtils.SHOW_NOTIFICATION_ENABLED_URI)) {
             updateState(mPreference);
diff --git a/src/com/android/settings/gestures/OneHandedSettings.java b/src/com/android/settings/gestures/OneHandedSettings.java
index 51c6b66..1310789 100644
--- a/src/com/android/settings/gestures/OneHandedSettings.java
+++ b/src/com/android/settings/gestures/OneHandedSettings.java
@@ -26,6 +26,7 @@
 import com.android.internal.accessibility.AccessibilityShortcutController;
 import com.android.settings.R;
 import com.android.settings.accessibility.AccessibilityShortcutPreferenceFragment;
+import com.android.settings.accessibility.ShortcutPreference;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settingslib.widget.IllustrationPreference;
 
@@ -77,6 +78,11 @@
     }
 
     @Override
+    protected void updateShortcutTitle(ShortcutPreference shortcutPreference) {
+        shortcutPreference.setTitle(R.string.one_handed_mode_shortcut_title);
+    }
+
+    @Override
     protected boolean showGeneralCategory() {
         return true;
     }
diff --git a/src/com/android/settings/gestures/OneHandedSettingsUtils.java b/src/com/android/settings/gestures/OneHandedSettingsUtils.java
index f058689..04898dc 100644
--- a/src/com/android/settings/gestures/OneHandedSettingsUtils.java
+++ b/src/com/android/settings/gestures/OneHandedSettingsUtils.java
@@ -27,6 +27,7 @@
 import android.os.SystemProperties;
 import android.os.UserHandle;
 import android.provider.Settings;
+import android.text.TextUtils;
 
 import androidx.annotation.VisibleForTesting;
 
@@ -45,8 +46,10 @@
             Settings.Secure.getUriFor(Settings.Secure.ONE_HANDED_MODE_ENABLED);
     static final Uri SHOW_NOTIFICATION_ENABLED_URI =
             Settings.Secure.getUriFor(Settings.Secure.SWIPE_BOTTOM_TO_NOTIFICATION_ENABLED);
-    static final Uri SHORTCUT_ENABLED_URI =
+    static final Uri SOFTWARE_SHORTCUT_ENABLED_URI =
             Settings.Secure.getUriFor(Settings.Secure.ACCESSIBILITY_BUTTON_TARGETS);
+    static final Uri HARDWARE_SHORTCUT_ENABLED_URI =
+            Settings.Secure.getUriFor(Settings.Secure.ACCESSIBILITY_SHORTCUT_TARGET_SERVICE);
 
     public enum OneHandedTimeout {
         NEVER(0), SHORT(4), MEDIUM(8), LONG(12);
@@ -238,9 +241,20 @@
      * @return true if user enabled one-handed shortcut in settings, false otherwise.
      */
     public static boolean getShortcutEnabled(Context context) {
-        final String targets = Settings.Secure.getStringForUser(context.getContentResolver(),
+        // Checks SOFTWARE_SHORTCUT_KEY
+        final String targetsSW = Settings.Secure.getStringForUser(context.getContentResolver(),
                 Settings.Secure.ACCESSIBILITY_BUTTON_TARGETS, sCurrentUserId);
-        return targets != null ? targets.contains(ONE_HANDED_MODE_TARGET_NAME) : false;
+        if (!TextUtils.isEmpty(targetsSW) && targetsSW.contains(ONE_HANDED_MODE_TARGET_NAME)) {
+            return true;
+        }
+
+        // Checks HARDWARE_SHORTCUT_KEY
+        final String targetsHW = Settings.Secure.getStringForUser(context.getContentResolver(),
+                Settings.Secure.ACCESSIBILITY_SHORTCUT_TARGET_SERVICE, sCurrentUserId);
+        if (!TextUtils.isEmpty(targetsHW) && targetsHW.contains(ONE_HANDED_MODE_TARGET_NAME)) {
+            return true;
+        }
+        return false;
     }
 
     /**
@@ -285,7 +299,8 @@
             final ContentResolver resolver = mContext.getContentResolver();
             resolver.registerContentObserver(ONE_HANDED_MODE_ENABLED_URI, true, this);
             resolver.registerContentObserver(SHOW_NOTIFICATION_ENABLED_URI, true, this);
-            resolver.registerContentObserver(SHORTCUT_ENABLED_URI, true, this);
+            resolver.registerContentObserver(SOFTWARE_SHORTCUT_ENABLED_URI, true, this);
+            resolver.registerContentObserver(HARDWARE_SHORTCUT_ENABLED_URI, true, this);
         }
 
         @Override
diff --git a/src/com/android/settings/gestures/SystemNavigationGestureSettings.java b/src/com/android/settings/gestures/SystemNavigationGestureSettings.java
index 4e783c9..4b9cfa3 100644
--- a/src/com/android/settings/gestures/SystemNavigationGestureSettings.java
+++ b/src/com/android/settings/gestures/SystemNavigationGestureSettings.java
@@ -17,6 +17,7 @@
 package com.android.settings.gestures;
 
 import static android.os.UserHandle.USER_CURRENT;
+import static android.provider.Settings.Secure.ACCESSIBILITY_BUTTON_MODE_FLOATING_MENU;
 import static android.view.WindowManagerPolicyConstants.NAV_BAR_MODE_2BUTTON_OVERLAY;
 import static android.view.WindowManagerPolicyConstants.NAV_BAR_MODE_3BUTTON_OVERLAY;
 import static android.view.WindowManagerPolicyConstants.NAV_BAR_MODE_GESTURAL_OVERLAY;
@@ -30,11 +31,14 @@
 import android.os.RemoteException;
 import android.os.ServiceManager;
 import android.provider.Settings;
+import android.text.TextUtils;
+import android.view.accessibility.AccessibilityManager;
 
 import androidx.annotation.VisibleForTesting;
 import androidx.preference.PreferenceScreen;
 
 import com.android.settings.R;
+import com.android.settings.SettingsTutorialDialogWrapperActivity;
 import com.android.settings.dashboard.suggestions.SuggestionFeatureProvider;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settings.search.BaseSearchIndexProvider;
@@ -173,7 +177,14 @@
     protected boolean setDefaultKey(String key) {
         setCurrentSystemNavigationMode(mOverlayManager, key);
         setIllustrationVideo(mVideoPreference, key);
-
+        if (TextUtils.equals(KEY_SYSTEM_NAV_GESTURAL, key)
+                && !isAccessibilityFloatingMenuEnabled()
+                && (isAnyServiceSupportAccessibilityButton() || isNavBarMagnificationEnabled())) {
+            final Intent intent = new Intent(getActivity(),
+                    SettingsTutorialDialogWrapperActivity.class);
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            startActivity(intent);
+        }
         return true;
     }
 
@@ -246,6 +257,24 @@
         }
     }
 
+    private boolean isAnyServiceSupportAccessibilityButton() {
+        final AccessibilityManager ams = getContext().getSystemService(AccessibilityManager.class);
+        final List<String> targets = ams.getAccessibilityShortcutTargets(
+                AccessibilityManager.ACCESSIBILITY_BUTTON);
+        return !targets.isEmpty();
+    }
+
+    private boolean isNavBarMagnificationEnabled() {
+        return Settings.Secure.getInt(getContext().getContentResolver(),
+                Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_NAVBAR_ENABLED, 0) == 1;
+    }
+
+    private boolean isAccessibilityFloatingMenuEnabled() {
+        return Settings.Secure.getInt(getContext().getContentResolver(),
+                Settings.Secure.ACCESSIBILITY_BUTTON_MODE, /* def= */ -1)
+                == ACCESSIBILITY_BUTTON_MODE_FLOATING_MENU;
+    }
+
     public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
             new BaseSearchIndexProvider(R.xml.system_navigation_gesture_settings) {
 
diff --git a/tests/robotests/src/com/android/settings/accessibility/AccessibilityButtonFooterPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/accessibility/AccessibilityButtonFooterPreferenceControllerTest.java
index 010b444..7354555 100644
--- a/tests/robotests/src/com/android/settings/accessibility/AccessibilityButtonFooterPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/accessibility/AccessibilityButtonFooterPreferenceControllerTest.java
@@ -16,6 +16,7 @@
 
 package com.android.settings.accessibility;
 
+import static android.view.WindowManagerPolicyConstants.NAV_BAR_MODE_2BUTTON;
 import static android.view.WindowManagerPolicyConstants.NAV_BAR_MODE_GESTURAL;
 
 import static com.google.common.truth.Truth.assertThat;
@@ -46,7 +47,6 @@
 
     @Rule
     public final MockitoRule mockito = MockitoJUnit.rule();
-
     @Spy
     private final Context mContext = ApplicationProvider.getApplicationContext();
     @Spy
@@ -76,4 +76,15 @@
         assertThat(mPreference.getTitle()).isEqualTo(
                 mContext.getText(R.string.accessibility_button_gesture_description));
     }
+
+    @Test
+    public void displayPreference_navigationGestureDisabled_setCorrectTitle() {
+        when(mResources.getInteger(com.android.internal.R.integer.config_navBarInteractionMode))
+                .thenReturn(NAV_BAR_MODE_2BUTTON);
+
+        mController.displayPreference(mScreen);
+
+        assertThat(mPreference.getTitle()).isEqualTo(
+                mContext.getText(R.string.accessibility_button_description));
+    }
 }
diff --git a/tests/robotests/src/com/android/settings/accessibility/AccessibilityButtonGesturePreferenceControllerTest.java b/tests/robotests/src/com/android/settings/accessibility/AccessibilityButtonGesturePreferenceControllerTest.java
new file mode 100644
index 0000000..da44228
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/accessibility/AccessibilityButtonGesturePreferenceControllerTest.java
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.accessibility;
+
+import static android.provider.Settings.Secure.ACCESSIBILITY_BUTTON_MODE_FLOATING_MENU;
+import static android.provider.Settings.Secure.ACCESSIBILITY_BUTTON_MODE_GESTURE;
+import static android.view.WindowManagerPolicyConstants.NAV_BAR_MODE_2BUTTON;
+import static android.view.WindowManagerPolicyConstants.NAV_BAR_MODE_GESTURAL;
+
+import static com.android.settings.core.BasePreferenceController.AVAILABLE;
+import static com.android.settings.core.BasePreferenceController.CONDITIONALLY_UNAVAILABLE;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.when;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.res.Resources;
+import android.provider.Settings;
+
+import androidx.preference.ListPreference;
+import androidx.test.core.app.ApplicationProvider;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Spy;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+import org.robolectric.RobolectricTestRunner;
+
+/** Tests for {@link AccessibilityButtonGesturePreferenceController}. */
+@RunWith(RobolectricTestRunner.class)
+public class AccessibilityButtonGesturePreferenceControllerTest {
+
+    @Rule
+    public final MockitoRule mockito = MockitoJUnit.rule();
+
+    @Spy
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+    @Spy
+    private final Resources mResources = mContext.getResources();
+    private final ContentResolver mContentResolver = mContext.getContentResolver();
+    private final ListPreference mListPreference = new ListPreference(mContext);
+    private AccessibilityButtonGesturePreferenceController mController;
+
+    @Before
+    public void setUp() {
+        mController = new AccessibilityButtonGesturePreferenceController(mContext,
+                "test_key");
+        when(mContext.getResources()).thenReturn(mResources);
+    }
+
+    @Test
+    public void getAvailabilityStatus_navigationGestureEnabled_returnAvailable() {
+        when(mResources.getInteger(com.android.internal.R.integer.config_navBarInteractionMode))
+                .thenReturn(NAV_BAR_MODE_GESTURAL);
+
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(AVAILABLE);
+    }
+
+    @Test
+    public void getAvailabilityStatus_navigationGestureDisabled_returnConditionallyUnavailable() {
+        when(mResources.getInteger(com.android.internal.R.integer.config_navBarInteractionMode))
+                .thenReturn(NAV_BAR_MODE_2BUTTON);
+
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(CONDITIONALLY_UNAVAILABLE);
+    }
+
+    @Test
+    public void updateState_a11yBtnModeGesture_navigationBarValue() {
+        Settings.Secure.putInt(mContentResolver, Settings.Secure.ACCESSIBILITY_BUTTON_MODE,
+                ACCESSIBILITY_BUTTON_MODE_GESTURE);
+
+        mController.updateState(mListPreference);
+
+        final String gestureValue = String.valueOf(ACCESSIBILITY_BUTTON_MODE_GESTURE);
+        assertThat(mListPreference.getValue()).isEqualTo(gestureValue);
+    }
+
+    @Test
+    public void onPreferenceChange_a11yBtnModeFloatingMenu_floatingMenuValue() {
+        final String floatingMenuValue = String.valueOf(ACCESSIBILITY_BUTTON_MODE_FLOATING_MENU);
+
+        mController.onPreferenceChange(mListPreference, floatingMenuValue);
+
+        assertThat(mListPreference.getValue()).isEqualTo(floatingMenuValue);
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/accessibility/AccessibilityButtonPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/accessibility/AccessibilityButtonPreferenceControllerTest.java
new file mode 100644
index 0000000..03f7887
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/accessibility/AccessibilityButtonPreferenceControllerTest.java
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.accessibility;
+
+import static android.view.WindowManagerPolicyConstants.NAV_BAR_MODE_2BUTTON;
+import static android.view.WindowManagerPolicyConstants.NAV_BAR_MODE_GESTURAL;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.content.res.Resources;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+import androidx.test.core.app.ApplicationProvider;
+
+import com.android.settings.R;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.Spy;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+import org.robolectric.RobolectricTestRunner;
+
+/** Tests for {@link AccessibilityButtonPreferenceController}. */
+@RunWith(RobolectricTestRunner.class)
+public class AccessibilityButtonPreferenceControllerTest {
+
+    @Rule
+    public final MockitoRule mockito = MockitoJUnit.rule();
+    @Spy
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+    @Spy
+    private final Resources mResources = mContext.getResources();
+    @Mock
+    private PreferenceScreen mScreen;
+    private Preference mPreference;
+    private AccessibilityButtonPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        mController = new AccessibilityButtonPreferenceController(mContext, "test_key");
+        mPreference = new Preference(mContext);
+        mPreference.setKey("test_key");
+
+        when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
+        when(mContext.getResources()).thenReturn(mResources);
+    }
+
+    @Test
+    public void displayPreference_navigationGestureEnabled_setCorrectTitle() {
+        when(mResources.getInteger(com.android.internal.R.integer.config_navBarInteractionMode))
+                .thenReturn(NAV_BAR_MODE_GESTURAL);
+
+        mController.displayPreference(mScreen);
+
+        assertThat(mPreference.getTitle()).isEqualTo(
+                mContext.getText(R.string.accessibility_button_gesture_title));
+    }
+
+    @Test
+    public void displayPreference_navigationGestureDisabled_setCorrectTitle() {
+        when(mResources.getInteger(com.android.internal.R.integer.config_navBarInteractionMode))
+                .thenReturn(NAV_BAR_MODE_2BUTTON);
+
+        mController.displayPreference(mScreen);
+
+        assertThat(mPreference.getTitle()).isEqualTo(
+                mContext.getText(R.string.accessibility_button_title));
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/accessibility/AccessibilityButtonPreviewPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/accessibility/AccessibilityButtonPreviewPreferenceControllerTest.java
index 3065030..05aba99 100644
--- a/tests/robotests/src/com/android/settings/accessibility/AccessibilityButtonPreviewPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/accessibility/AccessibilityButtonPreviewPreferenceControllerTest.java
@@ -19,6 +19,8 @@
 import static android.provider.Settings.Secure.ACCESSIBILITY_BUTTON_MODE_FLOATING_MENU;
 import static android.provider.Settings.Secure.ACCESSIBILITY_BUTTON_MODE_NAVIGATION_BAR;
 
+import static com.android.settings.testutils.ImageTestUtils.drawableToBitmap;
+
 import static com.google.common.truth.Truth.assertThat;
 
 import static org.mockito.Mockito.verify;
@@ -28,12 +30,11 @@
 import android.content.Context;
 import android.graphics.drawable.Drawable;
 import android.provider.Settings;
-import android.widget.ImageView;
 
 import androidx.test.core.app.ApplicationProvider;
 
 import com.android.settings.R;
-import com.android.settings.testutils.ImageTestUtils;
+import com.android.settingslib.widget.IllustrationPreference;
 
 import org.junit.Before;
 import org.junit.Rule;
@@ -62,7 +63,7 @@
     public void setUp() {
         when(mContext.getContentResolver()).thenReturn(mContentResolver);
         mController = new AccessibilityButtonPreviewPreferenceController(mContext, "test_key");
-        mController.mPreview = new ImageView(mContext);
+        mController.mIllustrationPreference = new IllustrationPreference(mContext);
     }
 
     @Test
@@ -74,8 +75,8 @@
 
         final Drawable navigationBarDrawable = mContext.getDrawable(
                 R.drawable.accessibility_button_navigation);
-        assertThat(ImageTestUtils.drawableToBitmap(mController.mPreview.getDrawable()).sameAs(
-                ImageTestUtils.drawableToBitmap(navigationBarDrawable))).isTrue();
+        assertThat(drawableToBitmap(mController.mIllustrationPreference.getImageDrawable()).sameAs(
+                drawableToBitmap(navigationBarDrawable))).isTrue();
     }
 
     @Test
@@ -90,10 +91,11 @@
         mController.mContentObserver.onChange(false);
 
         final Drawable smallFloatingMenuWithTenOpacityDrawable =
-                FloatingMenuLayerDrawable.createLayerDrawable(mContext,
+                AccessibilityLayerDrawable.createLayerDrawable(mContext,
                         R.drawable.accessibility_button_preview_small_floating_menu, 10);
-        assertThat(mController.mPreview.getDrawable().getConstantState()).isEqualTo(
-                smallFloatingMenuWithTenOpacityDrawable.getConstantState());
+        assertThat(
+                mController.mIllustrationPreference.getImageDrawable().getConstantState())
+                .isEqualTo(smallFloatingMenuWithTenOpacityDrawable.getConstantState());
     }
 
     @Test
diff --git a/tests/robotests/src/com/android/settings/accessibility/AccessibilityFooterPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/accessibility/AccessibilityFooterPreferenceControllerTest.java
new file mode 100644
index 0000000..d6c8d99
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/accessibility/AccessibilityFooterPreferenceControllerTest.java
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.accessibility;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.TextView;
+
+import androidx.preference.PreferenceScreen;
+import androidx.preference.PreferenceViewHolder;
+import androidx.test.core.app.ApplicationProvider;
+
+import com.android.settings.R;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.Spy;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+import org.robolectric.RobolectricTestRunner;
+
+/**
+ * Tests for {@link AccessibilityFooterPreferenceController}.
+ */
+@RunWith(RobolectricTestRunner.class)
+public class AccessibilityFooterPreferenceControllerTest {
+
+    private static final String TEST_KEY = "test_pref_key";
+    private static final String TEST_TITLE = "test_title";
+    private static final String TEST_INTRODUCTION_TITLE = "test_introduction_title";
+    private static final String TEST_CONTENT_DESCRIPTION = "test_content_description";
+    private static final int TEST_HELP_ID = 12345;
+
+    @Rule
+    public final MockitoRule mockito = MockitoJUnit.rule();
+
+    @Spy
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+    @Mock
+    private PreferenceScreen mScreen;
+    private AccessibilityFooterPreferenceController mController;
+    private AccessibilityFooterPreference mPreference;
+    private PreferenceViewHolder mPreferenceViewHolder;
+
+    @Before
+    public void setUp() {
+        mController = new AccessibilityFooterPreferenceController(mContext, TEST_KEY);
+        mPreference = new AccessibilityFooterPreference(mContext);
+        mPreference.setKey(TEST_KEY);
+        mPreference.setTitle(TEST_TITLE);
+
+        final LayoutInflater inflater = LayoutInflater.from(mContext);
+        final View view = inflater.inflate(R.layout.preference_footer, null);
+        mPreferenceViewHolder = PreferenceViewHolder.createInstanceForTests(view);
+        mPreference.onBindViewHolder(mPreferenceViewHolder);
+
+        when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
+    }
+
+    @Test
+    public void setIntroductionTitle_setCorrectIntroductionTitle() {
+        mController.setIntroductionTitle(TEST_INTRODUCTION_TITLE);
+
+        assertThat(mController.getIntroductionTitle()).isEqualTo(TEST_INTRODUCTION_TITLE);
+    }
+
+    @Test
+    public void onBindViewHolder_setIntroductionTitle_setCorrectIntroductionTitle() {
+        mController.setIntroductionTitle(TEST_INTRODUCTION_TITLE);
+        mController.displayPreference(mScreen);
+
+        mPreference.onBindViewHolder(mPreferenceViewHolder);
+
+        final TextView summaryView = (TextView) mPreferenceViewHolder
+                .findViewById(android.R.id.title);
+        assertThat(summaryView.getContentDescription().toString())
+                .contains(TEST_INTRODUCTION_TITLE);
+    }
+
+    @Test
+    public void setupHelpLink_setCorrectHelpLinkAndContentDescription() {
+        mController.setupHelpLink(TEST_HELP_ID, TEST_CONTENT_DESCRIPTION);
+
+        assertThat(mController.getHelpResource()).isEqualTo(TEST_HELP_ID);
+        assertThat(mController.getLearnMoreContentDescription())
+                .isEqualTo(TEST_CONTENT_DESCRIPTION);
+    }
+
+    @Test
+    public void onBindViewHolder_setupHelpLink_setCorrectHelpLinkAndContentDescription() {
+        mController.setupHelpLink(TEST_HELP_ID, TEST_CONTENT_DESCRIPTION);
+        mController.displayPreference(mScreen);
+
+        mPreference.onBindViewHolder(mPreferenceViewHolder);
+
+        final TextView learnMoreView = (TextView) mPreferenceViewHolder
+                .findViewById(com.android.settingslib.R.id.settingslib_learn_more);
+        assertThat(learnMoreView.getContentDescription().toString())
+                .contains(TEST_CONTENT_DESCRIPTION);
+        assertThat(mPreference.isLinkEnabled()).isTrue();
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/accessibility/FloatingMenuLayerDrawableTest.java b/tests/robotests/src/com/android/settings/accessibility/AccessibilityLayerDrawableTest.java
similarity index 83%
rename from tests/robotests/src/com/android/settings/accessibility/FloatingMenuLayerDrawableTest.java
rename to tests/robotests/src/com/android/settings/accessibility/AccessibilityLayerDrawableTest.java
index 45cefe4..915c788 100644
--- a/tests/robotests/src/com/android/settings/accessibility/FloatingMenuLayerDrawableTest.java
+++ b/tests/robotests/src/com/android/settings/accessibility/AccessibilityLayerDrawableTest.java
@@ -30,9 +30,9 @@
 import org.junit.runner.RunWith;
 import org.robolectric.RobolectricTestRunner;
 
-/** Tests for {@link FloatingMenuLayerDrawable}. */
+/** Tests for {@link AccessibilityLayerDrawable}. */
 @RunWith(RobolectricTestRunner.class)
-public class FloatingMenuLayerDrawableTest {
+public class AccessibilityLayerDrawableTest {
 
     private static final int TEST_RES_ID =
             com.android.internal.R.drawable.ic_accessibility_magnification;
@@ -46,8 +46,8 @@
                 R.drawable.accessibility_button_preview_base);
         final Drawable expected2ndDrawable = mContext.getDrawable(TEST_RES_ID);
 
-        final FloatingMenuLayerDrawable actualDrawable =
-                FloatingMenuLayerDrawable.createLayerDrawable(mContext, TEST_RES_ID,
+        final AccessibilityLayerDrawable actualDrawable =
+                AccessibilityLayerDrawable.createLayerDrawable(mContext, TEST_RES_ID,
                         /* opacity= */ 27);
 
         final Drawable actual1stDrawable = actualDrawable.getDrawable(0);
@@ -60,14 +60,14 @@
 
     @Test
     public void updateLayerDrawable_expectedFloatingMenuLayerDrawableState() {
-        final FloatingMenuLayerDrawable originalDrawable =
-                FloatingMenuLayerDrawable.createLayerDrawable(mContext, TEST_RES_ID, /* opacity= */
+        final AccessibilityLayerDrawable originalDrawable =
+                AccessibilityLayerDrawable.createLayerDrawable(mContext, TEST_RES_ID, /* opacity= */
                         72);
 
         originalDrawable.updateLayerDrawable(mContext, TEST_RES_ID_2, /* opacity= */ 27);
 
         assertThat(originalDrawable.getConstantState()).isEqualTo(
-                new FloatingMenuLayerDrawable.FloatingMenuLayerDrawableState(mContext,
+                new AccessibilityLayerDrawable.AccessibilityLayerDrawableState(mContext,
                         TEST_RES_ID_2, /* opacity= */ 27));
     }
 }