Merge "[flexiglass] Introduce rememberSession {} API" into main
diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index ca8eaf9..64b3ef1 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -4244,7 +4244,14 @@
             mReportNextDraw = false;
             mLastReportNextDrawReason = null;
             mActiveSurfaceSyncGroup = null;
-            mHasPendingTransactions = false;
+            if (mHasPendingTransactions) {
+                // TODO: We shouldn't ever actually hit this, it means mPendingTransaction wasn't
+                // merged with a sync group or BLASTBufferQueue before making it to this point
+                // But better a one or two frame flicker than steady-state broken from dropping
+                // whatever is in this transaction
+                mPendingTransaction.apply();
+                mHasPendingTransactions = false;
+            }
             mSyncBuffer = false;
             if (isInWMSRequestedSync()) {
                 mWmsRequestSyncGroup.markSyncReady();
diff --git a/packages/SystemUI/TEST_MAPPING b/packages/SystemUI/TEST_MAPPING
index 0c89a5d..deab818 100644
--- a/packages/SystemUI/TEST_MAPPING
+++ b/packages/SystemUI/TEST_MAPPING
@@ -59,13 +59,16 @@
       ]
     }
   ],
-  
+
   "auto-end-to-end-postsubmit": [
     {
       "name": "AndroidAutomotiveHomeTests",
       "options" : [
         {
           "include-filter": "android.platform.tests.HomeTest"
+        },
+        {
+          "exclude-filter": "android.platform.tests.HomeTest#testAssistantWidget"
         }
       ]
     },
diff --git a/packages/SystemUI/checks/Android.bp b/packages/SystemUI/checks/Android.bp
index addcaf4..04ac748 100644
--- a/packages/SystemUI/checks/Android.bp
+++ b/packages/SystemUI/checks/Android.bp
@@ -38,8 +38,9 @@
     defaults: ["AndroidLintCheckerTestDefaults"],
     srcs: ["tests/**/*.kt"],
     data: [
-        ":framework",
         ":androidx.annotation_annotation",
+        ":dagger2",
+        ":framework",
         ":kotlinx-coroutines-core",
     ],
     static_libs: [
diff --git a/packages/SystemUI/checks/src/com/android/internal/systemui/lint/SingletonAndroidComponentDetector.kt b/packages/SystemUI/checks/src/com/android/internal/systemui/lint/SingletonAndroidComponentDetector.kt
new file mode 100644
index 0000000..68ec1ee
--- /dev/null
+++ b/packages/SystemUI/checks/src/com/android/internal/systemui/lint/SingletonAndroidComponentDetector.kt
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2024 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.internal.systemui.lint
+
+import com.android.tools.lint.detector.api.AnnotationInfo
+import com.android.tools.lint.detector.api.AnnotationUsageInfo
+import com.android.tools.lint.detector.api.AnnotationUsageType
+import com.android.tools.lint.detector.api.Category
+import com.android.tools.lint.detector.api.Detector
+import com.android.tools.lint.detector.api.Implementation
+import com.android.tools.lint.detector.api.Issue
+import com.android.tools.lint.detector.api.JavaContext
+import com.android.tools.lint.detector.api.Scope
+import com.android.tools.lint.detector.api.Severity
+import com.android.tools.lint.detector.api.SourceCodeScanner
+import org.jetbrains.uast.UAnnotation
+import org.jetbrains.uast.UClass
+import org.jetbrains.uast.UElement
+import org.jetbrains.uast.UMethod
+
+/**
+ * Prevents binding Activities, Services, and BroadcastReceivers as Singletons in the Dagger graph.
+ *
+ * It is OK to mark a BroadcastReceiver as singleton as long as it is being constructed/injected and
+ * registered directly in the code. If instead it is declared in the manifest, and we let Android
+ * construct it for us, we also need to let Android destroy it for us, so don't allow marking it as
+ * singleton.
+ */
+class SingletonAndroidComponentDetector : Detector(), SourceCodeScanner {
+    override fun applicableAnnotations(): List<String> {
+        return listOf(
+            "com.android.systemui.dagger.SysUISingleton",
+        )
+    }
+
+    override fun isApplicableAnnotationUsage(type: AnnotationUsageType): Boolean =
+        type == AnnotationUsageType.DEFINITION
+
+    override fun visitAnnotationUsage(
+        context: JavaContext,
+        element: UElement,
+        annotationInfo: AnnotationInfo,
+        usageInfo: AnnotationUsageInfo
+    ) {
+        if (element !is UAnnotation) {
+            return
+        }
+
+        val parent = element.uastParent ?: return
+
+        if (isInvalidBindingMethod(parent)) {
+            context.report(
+                ISSUE,
+                element,
+                context.getLocation(element),
+                "Do not bind Activities, Services, or BroadcastReceivers as Singleton."
+            )
+        } else if (isInvalidClassDeclaration(parent)) {
+            context.report(
+                ISSUE,
+                element,
+                context.getLocation(element),
+                "Do not mark Activities or Services as Singleton."
+            )
+        }
+    }
+
+    private fun isInvalidBindingMethod(parent: UElement): Boolean {
+        if (parent !is UMethod) {
+            return false
+        }
+
+        if (
+            parent.returnType?.canonicalText !in
+                listOf(
+                    "android.app.Activity",
+                    "android.app.Service",
+                    "android.content.BroadcastReceiver",
+                )
+        ) {
+            return false
+        }
+
+        if (
+            !MULTIBIND_ANNOTATIONS.all { it in parent.annotations.map { it.qualifiedName } } &&
+                !MULTIPROVIDE_ANNOTATIONS.all { it in parent.annotations.map { it.qualifiedName } }
+        ) {
+            return false
+        }
+        return true
+    }
+
+    private fun isInvalidClassDeclaration(parent: UElement): Boolean {
+        if (parent !is UClass) {
+            return false
+        }
+
+        if (
+            parent.javaPsi.superClass?.qualifiedName !in
+                listOf(
+                    "android.app.Activity",
+                    "android.app.Service",
+                    // Fine to mark BroadcastReceiver as singleton in this scenario
+                )
+        ) {
+            return false
+        }
+
+        return true
+    }
+
+    companion object {
+        @JvmField
+        val ISSUE: Issue =
+            Issue.create(
+                id = "SingletonAndroidComponent",
+                briefDescription = "Activity, Service, or BroadcastReceiver marked as Singleton",
+                explanation =
+                    """Activities, Services, and BroadcastReceivers are created and destroyed by
+                        the Android System Server. Marking them with a Dagger scope
+                        results in them being cached and reused by Dagger. Trying to reuse a
+                        component like this will make for a very bad time.""",
+                category = Category.CORRECTNESS,
+                priority = 10,
+                severity = Severity.ERROR,
+                moreInfo =
+                    "https://developer.android.com/guide/components/activities/process-lifecycle",
+                // Note that JAVA_FILE_SCOPE also includes Kotlin source files.
+                implementation =
+                    Implementation(
+                        SingletonAndroidComponentDetector::class.java,
+                        Scope.JAVA_FILE_SCOPE
+                    )
+            )
+
+        private val MULTIBIND_ANNOTATIONS =
+            listOf("dagger.Binds", "dagger.multibindings.IntoMap", "dagger.multibindings.ClassKey")
+
+        val MULTIPROVIDE_ANNOTATIONS =
+            listOf(
+                "dagger.Provides",
+                "dagger.multibindings.IntoMap",
+                "dagger.multibindings.ClassKey"
+            )
+    }
+}
diff --git a/packages/SystemUI/checks/src/com/android/internal/systemui/lint/SystemUIIssueRegistry.kt b/packages/SystemUI/checks/src/com/android/internal/systemui/lint/SystemUIIssueRegistry.kt
index e93264c..cecbc47 100644
--- a/packages/SystemUI/checks/src/com/android/internal/systemui/lint/SystemUIIssueRegistry.kt
+++ b/packages/SystemUI/checks/src/com/android/internal/systemui/lint/SystemUIIssueRegistry.kt
@@ -40,6 +40,7 @@
                 RegisterReceiverViaContextDetector.ISSUE,
                 SoftwareBitmapDetector.ISSUE,
                 NonInjectedServiceDetector.ISSUE,
+                SingletonAndroidComponentDetector.ISSUE,
                 StaticSettingsProviderDetector.ISSUE,
                 DemotingTestWithoutBugDetector.ISSUE,
                 TestFunctionNameViolationDetector.ISSUE,
diff --git a/packages/SystemUI/checks/tests/com/android/internal/systemui/lint/AndroidStubs.kt b/packages/SystemUI/checks/tests/com/android/internal/systemui/lint/AndroidStubs.kt
index e1cca88..8396f3f 100644
--- a/packages/SystemUI/checks/tests/com/android/internal/systemui/lint/AndroidStubs.kt
+++ b/packages/SystemUI/checks/tests/com/android/internal/systemui/lint/AndroidStubs.kt
@@ -21,8 +21,9 @@
 
 internal val libraryNames =
     arrayOf(
-        "framework.jar",
         "androidx.annotation_annotation.jar",
+        "dagger2.jar",
+        "framework.jar",
         "kotlinx-coroutines-core.jar",
     )
 
diff --git a/packages/SystemUI/checks/tests/com/android/internal/systemui/lint/SingletonAndroidComponentDetectorTest.kt b/packages/SystemUI/checks/tests/com/android/internal/systemui/lint/SingletonAndroidComponentDetectorTest.kt
new file mode 100644
index 0000000..0606af8
--- /dev/null
+++ b/packages/SystemUI/checks/tests/com/android/internal/systemui/lint/SingletonAndroidComponentDetectorTest.kt
@@ -0,0 +1,182 @@
+/*
+ * Copyright (C) 2024 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.internal.systemui.lint
+
+import com.android.tools.lint.checks.infrastructure.TestFile
+import com.android.tools.lint.checks.infrastructure.TestFiles
+import com.android.tools.lint.detector.api.Detector
+import com.android.tools.lint.detector.api.Issue
+import org.junit.Test
+
+class SingletonAndroidComponentDetectorTest : SystemUILintDetectorTest() {
+    override fun getDetector(): Detector = SingletonAndroidComponentDetector()
+
+    override fun getIssues(): List<Issue> = listOf(SingletonAndroidComponentDetector.ISSUE)
+
+    @Test
+    fun testBindsServiceAsSingleton() {
+        lint()
+            .files(
+                TestFiles.kotlin(
+                    """
+                    package test.pkg
+
+                    import android.app.Service
+                    import com.android.systemui.dagger.SysUISingleton
+                    import dagger.Binds
+                    import dagger.Module
+                    import dagger.multibindings.ClassKey
+                    import dagger.multibindings.IntoMap
+
+                    @Module
+                    interface BadModule {
+                       @SysUISingleton
+                       @Binds
+                       @IntoMap
+                       @ClassKey(SingletonService::class)
+                       fun bindSingletonService(service: SingletonService): Service
+                    }
+                """
+                        .trimIndent()
+                ),
+                *stubs
+            )
+            .issues(SingletonAndroidComponentDetector.ISSUE)
+            .run()
+            .expect(
+                """
+                src/test/pkg/BadModule.kt:12: Error: Do not bind Activities, Services, or BroadcastReceivers as Singleton. [SingletonAndroidComponent]
+                   @SysUISingleton
+                   ~~~~~~~~~~~~~~~
+                1 errors, 0 warnings
+                """
+                    .trimIndent()
+            )
+    }
+
+    @Test
+    fun testProvidesBroadcastReceiverAsSingleton() {
+        lint()
+            .files(
+                TestFiles.kotlin(
+                    """
+                    package test.pkg
+
+                    import android.content.BroadcastReceiver
+                    import com.android.systemui.dagger.SysUISingleton
+                    import dagger.Provides
+                    import dagger.Module
+                    import dagger.multibindings.ClassKey
+                    import dagger.multibindings.IntoMap
+
+                    @Module
+                    abstract class BadModule {
+                       @SysUISingleton
+                       @Provides
+                       @IntoMap
+                       @ClassKey(SingletonBroadcastReceiver::class)
+                       fun providesSingletonBroadcastReceiver(br: SingletonBroadcastReceiver): BroadcastReceiver {
+                          return br
+                       }
+                    }
+                """
+                        .trimIndent()
+                ),
+                *stubs
+            )
+            .issues(SingletonAndroidComponentDetector.ISSUE)
+            .run()
+            .expect(
+                """
+                src/test/pkg/BadModule.kt:12: Error: Do not bind Activities, Services, or BroadcastReceivers as Singleton. [SingletonAndroidComponent]
+                   @SysUISingleton
+                   ~~~~~~~~~~~~~~~
+                1 errors, 0 warnings
+                """
+                    .trimIndent()
+            )
+    }
+    @Test
+    fun testMarksActivityAsSingleton() {
+        lint()
+            .files(
+                TestFiles.kotlin(
+                    """
+                    package test.pkg
+
+                    import android.app.Activity
+                    import com.android.systemui.dagger.SysUISingleton
+
+                    @SysUISingleton
+                    class BadActivity : Activity() {
+                    }
+                """
+                        .trimIndent()
+                ),
+                *stubs
+            )
+            .issues(SingletonAndroidComponentDetector.ISSUE)
+            .run()
+            .expect(
+                """
+                src/test/pkg/BadActivity.kt:6: Error: Do not mark Activities or Services as Singleton. [SingletonAndroidComponent]
+                @SysUISingleton
+                ~~~~~~~~~~~~~~~
+                1 errors, 0 warnings
+                """
+                    .trimIndent()
+            )
+    }
+    @Test
+    fun testMarksBroadcastReceiverAsSingleton() {
+        lint()
+            .files(
+                TestFiles.kotlin(
+                    """
+                    package test.pkg
+
+                    import android.content.BroadcastReceiver
+                    import com.android.systemui.dagger.SysUISingleton
+
+                    @SysUISingleton
+                    class SingletonReceveiver : BroadcastReceiver() {
+                    }
+                """
+                        .trimIndent()
+                ),
+                *stubs
+            )
+            .issues(SingletonAndroidComponentDetector.ISSUE)
+            .run()
+            .expectClean()
+    }
+
+    // Define stubs for Android imports. The tests don't run on Android so
+    // they don't "see" any of Android specific classes. We need to define
+    // the method parameters for proper resolution.
+    private val singletonStub: TestFile =
+        java(
+            """
+        package com.android.systemui.dagger;
+
+        public @interface SysUISingleton {
+        }
+        """
+        )
+
+    private val stubs = arrayOf(singletonStub) + androidStubs
+}
diff --git a/packages/SystemUI/multivalentTests/src/com/android/systemui/accessibility/data/repository/OneHandedModeRepositoryImplTest.kt b/packages/SystemUI/multivalentTests/src/com/android/systemui/accessibility/data/repository/OneHandedModeRepositoryImplTest.kt
new file mode 100644
index 0000000..c0d481c
--- /dev/null
+++ b/packages/SystemUI/multivalentTests/src/com/android/systemui/accessibility/data/repository/OneHandedModeRepositoryImplTest.kt
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2024 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.systemui.accessibility.data.repository
+
+import android.os.UserHandle
+import android.provider.Settings
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.coroutines.collectLastValue
+import com.android.systemui.util.settings.FakeSettings
+import com.google.common.truth.Truth.assertThat
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.StandardTestDispatcher
+import kotlinx.coroutines.test.TestScope
+import kotlinx.coroutines.test.runCurrent
+import kotlinx.coroutines.test.runTest
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@OptIn(ExperimentalCoroutinesApi::class)
+@SmallTest
+@RunWith(AndroidJUnit4::class)
+@android.platform.test.annotations.EnabledOnRavenwood
+class OneHandedModeRepositoryImplTest : SysuiTestCase() {
+
+    private val testUser1 = UserHandle.of(1)!!
+    private val testUser2 = UserHandle.of(2)!!
+    private val testDispatcher = StandardTestDispatcher()
+    private val scope = TestScope(testDispatcher)
+    private val settings: FakeSettings = FakeSettings()
+
+    private val underTest: OneHandedModeRepository =
+        OneHandedModeRepositoryImpl(
+            testDispatcher,
+            scope.backgroundScope,
+            settings,
+        )
+
+    @Test
+    fun isEnabled_settingNotInitialized_returnsFalseByDefault() =
+        scope.runTest {
+            val actualValue by collectLastValue(underTest.isEnabled(testUser1))
+
+            runCurrent()
+
+            assertThat(actualValue).isFalse()
+        }
+
+    @Test
+    fun isEnabled_initiallyGetsSettingsValue() =
+        scope.runTest {
+            val actualValue by collectLastValue(underTest.isEnabled(testUser1))
+
+            settings.putIntForUser(SETTING_NAME, ENABLED, testUser1.identifier)
+            runCurrent()
+
+            assertThat(actualValue).isTrue()
+        }
+
+    @Test
+    fun isEnabled_settingUpdated_valueUpdated() =
+        scope.runTest {
+            val actualValue by collectLastValue(underTest.isEnabled(testUser1))
+            runCurrent()
+            assertThat(actualValue).isFalse()
+
+            settings.putIntForUser(SETTING_NAME, ENABLED, testUser1.identifier)
+            runCurrent()
+
+            assertThat(actualValue).isTrue()
+            runCurrent()
+
+            settings.putIntForUser(SETTING_NAME, DISABLED, testUser1.identifier)
+            runCurrent()
+            assertThat(actualValue).isFalse()
+        }
+
+    @Test
+    fun isEnabled_settingForUserOneOnly_valueUpdatedForUserOneOnly() =
+        scope.runTest {
+            val lastValueUser1 by collectLastValue(underTest.isEnabled(testUser1))
+            val lastValueUser2 by collectLastValue(underTest.isEnabled(testUser2))
+
+            settings.putIntForUser(SETTING_NAME, DISABLED, testUser1.identifier)
+            settings.putIntForUser(SETTING_NAME, DISABLED, testUser2.identifier)
+            runCurrent()
+            assertThat(lastValueUser1).isFalse()
+            assertThat(lastValueUser2).isFalse()
+
+            settings.putIntForUser(SETTING_NAME, ENABLED, testUser1.identifier)
+            runCurrent()
+            assertThat(lastValueUser1).isTrue()
+            assertThat(lastValueUser2).isFalse()
+        }
+
+    @Test
+    fun setEnabled() =
+        scope.runTest {
+            val success = underTest.setIsEnabled(true, testUser1)
+            runCurrent()
+            assertThat(success).isTrue()
+
+            val actualValue = settings.getIntForUser(SETTING_NAME, testUser1.identifier)
+            assertThat(actualValue).isEqualTo(ENABLED)
+        }
+
+    @Test
+    fun setDisabled() =
+        scope.runTest {
+            val success = underTest.setIsEnabled(false, testUser1)
+            runCurrent()
+            assertThat(success).isTrue()
+
+            val actualValue = settings.getIntForUser(SETTING_NAME, testUser1.identifier)
+            assertThat(actualValue).isEqualTo(DISABLED)
+        }
+
+    companion object {
+        private const val SETTING_NAME = Settings.Secure.ONE_HANDED_MODE_ENABLED
+        private const val DISABLED = 0
+        private const val ENABLED = 1
+    }
+}
diff --git a/packages/SystemUI/multivalentTests/src/com/android/systemui/qs/tiles/impl/onehanded/domain/interactor/OneHandedModeTileDataInteractorTest.kt b/packages/SystemUI/multivalentTests/src/com/android/systemui/qs/tiles/impl/onehanded/domain/interactor/OneHandedModeTileDataInteractorTest.kt
new file mode 100644
index 0000000..0761ee7
--- /dev/null
+++ b/packages/SystemUI/multivalentTests/src/com/android/systemui/qs/tiles/impl/onehanded/domain/interactor/OneHandedModeTileDataInteractorTest.kt
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2024 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.systemui.qs.tiles.impl.onehanded.domain.interactor
+
+import android.os.UserHandle
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.accessibility.data.repository.oneHandedModeRepository
+import com.android.systemui.coroutines.collectLastValue
+import com.android.systemui.kosmos.Kosmos
+import com.android.systemui.qs.tiles.base.interactor.DataUpdateTrigger
+import com.android.systemui.qs.tiles.impl.onehanded.domain.OneHandedModeTileDataInteractor
+import com.android.wm.shell.onehanded.OneHanded
+import com.google.common.truth.Truth.assertThat
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.test.runCurrent
+import kotlinx.coroutines.test.runTest
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@OptIn(ExperimentalCoroutinesApi::class)
+@SmallTest
+@RunWith(AndroidJUnit4::class)
+class OneHandedModeTileDataInteractorTest : SysuiTestCase() {
+
+    private val kosmos = Kosmos()
+    private val testUser = UserHandle.of(1)!!
+    private val oneHandedModeRepository = kosmos.oneHandedModeRepository
+    private val underTest: OneHandedModeTileDataInteractor =
+        OneHandedModeTileDataInteractor(oneHandedModeRepository)
+
+    @Test
+    fun availability_matchesController() = runTest {
+        val expectedAvailability = OneHanded.sIsSupportOneHandedMode
+        val availability by collectLastValue(underTest.availability(testUser))
+
+        assertThat(availability).isEqualTo(expectedAvailability)
+    }
+
+    @Test
+    fun data_matchesRepository() = runTest {
+        val lastData by
+            collectLastValue(underTest.tileData(testUser, flowOf(DataUpdateTrigger.InitialRequest)))
+        runCurrent()
+        assertThat(lastData!!.isEnabled).isFalse()
+
+        oneHandedModeRepository.setIsEnabled(true, testUser)
+        runCurrent()
+        assertThat(lastData!!.isEnabled).isTrue()
+
+        oneHandedModeRepository.setIsEnabled(false, testUser)
+        runCurrent()
+        assertThat(lastData!!.isEnabled).isFalse()
+    }
+}
diff --git a/packages/SystemUI/multivalentTests/src/com/android/systemui/qs/tiles/impl/onehanded/domain/interactor/OneHandedModeTileUserActionInteractorTest.kt b/packages/SystemUI/multivalentTests/src/com/android/systemui/qs/tiles/impl/onehanded/domain/interactor/OneHandedModeTileUserActionInteractorTest.kt
new file mode 100644
index 0000000..3f17d4c
--- /dev/null
+++ b/packages/SystemUI/multivalentTests/src/com/android/systemui/qs/tiles/impl/onehanded/domain/interactor/OneHandedModeTileUserActionInteractorTest.kt
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2024 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.systemui.qs.tiles.impl.onehanded.domain.interactor
+
+import android.os.UserHandle
+import android.platform.test.annotations.EnabledOnRavenwood
+import android.provider.Settings
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.accessibility.data.repository.FakeOneHandedModeRepository
+import com.android.systemui.qs.tiles.base.actions.FakeQSTileIntentUserInputHandler
+import com.android.systemui.qs.tiles.base.actions.QSTileIntentUserInputHandlerSubject
+import com.android.systemui.qs.tiles.base.interactor.QSTileInputTestKtx
+import com.android.systemui.qs.tiles.impl.onehanded.domain.OneHandedModeTileUserActionInteractor
+import com.android.systemui.qs.tiles.impl.onehanded.domain.model.OneHandedModeTileModel
+import com.google.common.truth.Truth.assertThat
+import kotlinx.coroutines.test.runTest
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@SmallTest
+@EnabledOnRavenwood
+@RunWith(AndroidJUnit4::class)
+class OneHandedModeTileUserActionInteractorTest : SysuiTestCase() {
+
+    private val testUser = UserHandle.of(1)
+    private val repository = FakeOneHandedModeRepository()
+    private val inputHandler = FakeQSTileIntentUserInputHandler()
+
+    private val underTest =
+        OneHandedModeTileUserActionInteractor(
+            repository,
+            inputHandler,
+        )
+
+    @Test
+    fun handleClickWhenEnabled() = runTest {
+        val wasEnabled = true
+        repository.setIsEnabled(wasEnabled, testUser)
+
+        underTest.handleInput(
+            QSTileInputTestKtx.click(OneHandedModeTileModel(wasEnabled), testUser)
+        )
+
+        assertThat(repository.isEnabled(testUser).value).isEqualTo(!wasEnabled)
+    }
+
+    @Test
+    fun handleClickWhenDisabled() = runTest {
+        val wasEnabled = false
+        repository.setIsEnabled(wasEnabled, testUser)
+
+        underTest.handleInput(
+            QSTileInputTestKtx.click(OneHandedModeTileModel(wasEnabled), testUser)
+        )
+
+        assertThat(repository.isEnabled(testUser).value).isEqualTo(!wasEnabled)
+    }
+
+    @Test
+    fun handleLongClickWhenDisabled() = runTest {
+        val enabled = false
+
+        underTest.handleInput(
+            QSTileInputTestKtx.longClick(OneHandedModeTileModel(enabled), testUser)
+        )
+
+        QSTileIntentUserInputHandlerSubject.assertThat(inputHandler).handledOneIntentInput {
+            assertThat(it.intent.action).isEqualTo(Settings.ACTION_ONE_HANDED_SETTINGS)
+        }
+    }
+
+    @Test
+    fun handleLongClickWhenEnabled() = runTest {
+        val enabled = true
+
+        underTest.handleInput(
+            QSTileInputTestKtx.longClick(OneHandedModeTileModel(enabled), testUser)
+        )
+
+        QSTileIntentUserInputHandlerSubject.assertThat(inputHandler).handledOneIntentInput {
+            assertThat(it.intent.action).isEqualTo(Settings.ACTION_ONE_HANDED_SETTINGS)
+        }
+    }
+}
diff --git a/packages/SystemUI/multivalentTests/src/com/android/systemui/qs/tiles/impl/onehanded/ui/OneHandedModeTileMapperTest.kt b/packages/SystemUI/multivalentTests/src/com/android/systemui/qs/tiles/impl/onehanded/ui/OneHandedModeTileMapperTest.kt
new file mode 100644
index 0000000..7ef020d
--- /dev/null
+++ b/packages/SystemUI/multivalentTests/src/com/android/systemui/qs/tiles/impl/onehanded/ui/OneHandedModeTileMapperTest.kt
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2024 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.systemui.qs.tiles.impl.onehanded.ui
+
+import android.graphics.drawable.TestStubDrawable
+import android.widget.Switch
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.common.shared.model.Icon
+import com.android.systemui.kosmos.Kosmos
+import com.android.systemui.qs.tileimpl.SubtitleArrayMapping
+import com.android.systemui.qs.tiles.impl.custom.QSTileStateSubject
+import com.android.systemui.qs.tiles.impl.onehanded.domain.model.OneHandedModeTileModel
+import com.android.systemui.qs.tiles.impl.onehanded.qsOneHandedModeTileConfig
+import com.android.systemui.qs.tiles.viewmodel.QSTileState
+import com.android.systemui.res.R
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@SmallTest
+@RunWith(AndroidJUnit4::class)
+class OneHandedModeTileMapperTest : SysuiTestCase() {
+    private val kosmos = Kosmos()
+    private val config = kosmos.qsOneHandedModeTileConfig
+    private val subtitleArrayId = SubtitleArrayMapping.getSubtitleId(config.tileSpec.spec)
+    private val subtitleArray by lazy { context.resources.getStringArray(subtitleArrayId) }
+
+    private lateinit var mapper: OneHandedModeTileMapper
+
+    @Before
+    fun setup() {
+        mapper =
+            OneHandedModeTileMapper(
+                context.orCreateTestableResources
+                    .apply {
+                        addOverride(
+                            com.android.internal.R.drawable.ic_qs_one_handed_mode,
+                            TestStubDrawable()
+                        )
+                    }
+                    .resources,
+                context.theme
+            )
+    }
+
+    @Test
+    fun disabledModel() {
+        val inputModel = OneHandedModeTileModel(false)
+
+        val outputState = mapper.map(config, inputModel)
+
+        val expectedState =
+            createOneHandedModeTileState(
+                QSTileState.ActivationState.INACTIVE,
+                subtitleArray[1],
+                com.android.internal.R.drawable.ic_qs_one_handed_mode
+            )
+        QSTileStateSubject.assertThat(outputState).isEqualTo(expectedState)
+    }
+
+    @Test
+    fun enabledModel() {
+        val inputModel = OneHandedModeTileModel(true)
+
+        val outputState = mapper.map(config, inputModel)
+
+        val expectedState =
+            createOneHandedModeTileState(
+                QSTileState.ActivationState.ACTIVE,
+                subtitleArray[2],
+                com.android.internal.R.drawable.ic_qs_one_handed_mode
+            )
+        QSTileStateSubject.assertThat(outputState).isEqualTo(expectedState)
+    }
+
+    private fun createOneHandedModeTileState(
+        activationState: QSTileState.ActivationState,
+        secondaryLabel: String,
+        iconRes: Int,
+    ): QSTileState {
+        val label = context.getString(R.string.quick_settings_onehanded_label)
+        return QSTileState(
+            { Icon.Loaded(context.getDrawable(iconRes)!!, null) },
+            label,
+            activationState,
+            secondaryLabel,
+            setOf(QSTileState.UserAction.CLICK, QSTileState.UserAction.LONG_CLICK),
+            label,
+            null,
+            QSTileState.SideViewIcon.None,
+            QSTileState.EnabledState.ENABLED,
+            Switch::class.qualifiedName
+        )
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/accessibility/AccessibilityModule.kt b/packages/SystemUI/src/com/android/systemui/accessibility/AccessibilityModule.kt
index 35f9344..004d5db 100644
--- a/packages/SystemUI/src/com/android/systemui/accessibility/AccessibilityModule.kt
+++ b/packages/SystemUI/src/com/android/systemui/accessibility/AccessibilityModule.kt
@@ -22,6 +22,8 @@
 import com.android.systemui.accessibility.data.repository.ColorCorrectionRepositoryImpl
 import com.android.systemui.accessibility.data.repository.ColorInversionRepository
 import com.android.systemui.accessibility.data.repository.ColorInversionRepositoryImpl
+import com.android.systemui.accessibility.data.repository.OneHandedModeRepository
+import com.android.systemui.accessibility.data.repository.OneHandedModeRepositoryImpl
 import com.android.systemui.accessibility.qs.QSAccessibilityModule
 import dagger.Binds
 import dagger.Module
@@ -34,6 +36,8 @@
     @Binds
     fun colorInversionRepository(impl: ColorInversionRepositoryImpl): ColorInversionRepository
 
+    @Binds fun oneHandedModeRepository(impl: OneHandedModeRepositoryImpl): OneHandedModeRepository
+
     @Binds
     fun accessibilityQsShortcutsRepository(
         impl: AccessibilityQsShortcutsRepositoryImpl
diff --git a/packages/SystemUI/src/com/android/systemui/accessibility/data/repository/OneHandedModeRepository.kt b/packages/SystemUI/src/com/android/systemui/accessibility/data/repository/OneHandedModeRepository.kt
new file mode 100644
index 0000000..d921025
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/accessibility/data/repository/OneHandedModeRepository.kt
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2024 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.systemui.accessibility.data.repository
+
+import android.os.UserHandle
+import android.provider.Settings
+import com.android.systemui.dagger.SysUISingleton
+import com.android.systemui.dagger.qualifiers.Application
+import com.android.systemui.dagger.qualifiers.Background
+import com.android.systemui.util.settings.SecureSettings
+import com.android.systemui.util.settings.SettingsProxyExt.observerFlow
+import javax.inject.Inject
+import kotlin.coroutines.CoroutineContext
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.flowOn
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.onStart
+import kotlinx.coroutines.flow.stateIn
+import kotlinx.coroutines.withContext
+
+/** Provides data related to one handed mode. */
+interface OneHandedModeRepository {
+    /** Observable for whether one handed mode is enabled */
+    fun isEnabled(userHandle: UserHandle): Flow<Boolean>
+
+    /** Sets one handed mode enabled state. */
+    suspend fun setIsEnabled(isEnabled: Boolean, userHandle: UserHandle): Boolean
+}
+
+@SysUISingleton
+class OneHandedModeRepositoryImpl
+@Inject
+constructor(
+    @Background private val bgCoroutineContext: CoroutineContext,
+    @Application private val scope: CoroutineScope,
+    private val secureSettings: SecureSettings,
+) : OneHandedModeRepository {
+
+    private val userMap = mutableMapOf<Int, Flow<Boolean>>()
+
+    override fun isEnabled(userHandle: UserHandle): Flow<Boolean> =
+        userMap.getOrPut(userHandle.identifier) {
+            secureSettings
+                .observerFlow(userHandle.identifier, SETTING_NAME)
+                .onStart { emit(Unit) }
+                .map {
+                    secureSettings.getIntForUser(SETTING_NAME, DISABLED, userHandle.identifier) ==
+                        ENABLED
+                }
+                .distinctUntilChanged()
+                .flowOn(bgCoroutineContext)
+                .stateIn(scope, SharingStarted.WhileSubscribed(), DEFAULT_VALUE)
+        }
+
+    override suspend fun setIsEnabled(isEnabled: Boolean, userHandle: UserHandle): Boolean =
+        withContext(bgCoroutineContext) {
+            secureSettings.putIntForUser(
+                SETTING_NAME,
+                if (isEnabled) ENABLED else DISABLED,
+                userHandle.identifier
+            )
+        }
+
+    companion object {
+        private const val SETTING_NAME = Settings.Secure.ONE_HANDED_MODE_ENABLED
+        private const val DISABLED = 0
+        private const val ENABLED = 1
+        private const val DEFAULT_VALUE = false
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/accessibility/qs/QSAccessibilityModule.kt b/packages/SystemUI/src/com/android/systemui/accessibility/qs/QSAccessibilityModule.kt
index 99be762..54dd6d0 100644
--- a/packages/SystemUI/src/com/android/systemui/accessibility/qs/QSAccessibilityModule.kt
+++ b/packages/SystemUI/src/com/android/systemui/accessibility/qs/QSAccessibilityModule.kt
@@ -41,6 +41,10 @@
 import com.android.systemui.qs.tiles.impl.inversion.domain.interactor.ColorInversionTileDataInteractor
 import com.android.systemui.qs.tiles.impl.inversion.domain.interactor.ColorInversionUserActionInteractor
 import com.android.systemui.qs.tiles.impl.inversion.domain.model.ColorInversionTileModel
+import com.android.systemui.qs.tiles.impl.onehanded.domain.OneHandedModeTileDataInteractor
+import com.android.systemui.qs.tiles.impl.onehanded.domain.OneHandedModeTileUserActionInteractor
+import com.android.systemui.qs.tiles.impl.onehanded.domain.model.OneHandedModeTileModel
+import com.android.systemui.qs.tiles.impl.onehanded.ui.OneHandedModeTileMapper
 import com.android.systemui.qs.tiles.impl.reducebrightness.domain.interactor.ReduceBrightColorsTileDataInteractor
 import com.android.systemui.qs.tiles.impl.reducebrightness.domain.interactor.ReduceBrightColorsTileUserActionInteractor
 import com.android.systemui.qs.tiles.impl.reducebrightness.domain.model.ReduceBrightColorsTileModel
@@ -256,5 +260,24 @@
                     ),
                 instanceId = uiEventLogger.getNewInstanceId(),
             )
+
+        /** Inject One Handed Mode Tile into tileViewModelMap in QSModule. */
+        @Provides
+        @IntoMap
+        @StringKey(ONE_HANDED_TILE_SPEC)
+        fun provideOneHandedModeTileViewModel(
+            factory: QSTileViewModelFactory.Static<OneHandedModeTileModel>,
+            mapper: OneHandedModeTileMapper,
+            stateInteractor: OneHandedModeTileDataInteractor,
+            userActionInteractor: OneHandedModeTileUserActionInteractor
+        ): QSTileViewModel =
+            if (Flags.qsNewTilesFuture())
+                factory.create(
+                    TileSpec.create(ONE_HANDED_TILE_SPEC),
+                    userActionInteractor,
+                    stateInteractor,
+                    mapper,
+                )
+            else StubQSTileViewModel
     }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/ui/transitions/DeviceEntryIconTransitionModule.kt b/packages/SystemUI/src/com/android/systemui/keyguard/ui/transitions/DeviceEntryIconTransitionModule.kt
index a8e9041..0f63f65 100644
--- a/packages/SystemUI/src/com/android/systemui/keyguard/ui/transitions/DeviceEntryIconTransitionModule.kt
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/ui/transitions/DeviceEntryIconTransitionModule.kt
@@ -41,6 +41,7 @@
 import com.android.systemui.keyguard.ui.viewmodel.LockscreenToPrimaryBouncerTransitionViewModel
 import com.android.systemui.keyguard.ui.viewmodel.OccludedToAodTransitionViewModel
 import com.android.systemui.keyguard.ui.viewmodel.OccludedToLockscreenTransitionViewModel
+import com.android.systemui.keyguard.ui.viewmodel.OffToLockscreenTransitionViewModel
 import com.android.systemui.keyguard.ui.viewmodel.PrimaryBouncerToAodTransitionViewModel
 import com.android.systemui.keyguard.ui.viewmodel.PrimaryBouncerToDozingTransitionViewModel
 import com.android.systemui.keyguard.ui.viewmodel.PrimaryBouncerToLockscreenTransitionViewModel
@@ -196,6 +197,12 @@
 
     @Binds
     @IntoSet
+    abstract fun offToLockscreen(
+        impl: OffToLockscreenTransitionViewModel
+    ): DeviceEntryIconTransition
+
+    @Binds
+    @IntoSet
     abstract fun primaryBouncerToAod(
         impl: PrimaryBouncerToAodTransitionViewModel
     ): DeviceEntryIconTransition
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/DeviceEntryIconViewModel.kt b/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/DeviceEntryIconViewModel.kt
index 40be73e..da2fcc4 100644
--- a/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/DeviceEntryIconViewModel.kt
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/DeviceEntryIconViewModel.kt
@@ -84,19 +84,21 @@
             .map { it.deviceEntryParentViewAlpha }
             .merge()
             .shareIn(scope, SharingStarted.WhileSubscribed())
+            .onStart { emit(initialAlphaFromKeyguardState(transitionInteractor.getCurrentState())) }
     private val alphaMultiplierFromShadeExpansion: Flow<Float> =
         combine(
-            showingAlternateBouncer,
-            shadeExpansion,
-            qsProgress,
-        ) { showingAltBouncer, shadeExpansion, qsProgress ->
-            val interpolatedQsProgress = (qsProgress * 2).coerceIn(0f, 1f)
-            if (showingAltBouncer) {
-                1f
-            } else {
-                (1f - shadeExpansion) * (1f - interpolatedQsProgress)
+                showingAlternateBouncer,
+                shadeExpansion,
+                qsProgress,
+            ) { showingAltBouncer, shadeExpansion, qsProgress ->
+                val interpolatedQsProgress = (qsProgress * 2).coerceIn(0f, 1f)
+                if (showingAltBouncer) {
+                    1f
+                } else {
+                    (1f - shadeExpansion) * (1f - interpolatedQsProgress)
+                }
             }
-        }
+            .onStart { emit(1f) }
     // Burn-in offsets in AOD
     private val nonAnimatedBurnInOffsets: Flow<BurnInOffsets> =
         combine(
@@ -122,14 +124,34 @@
             )
         }
 
-    val deviceEntryViewAlpha: StateFlow<Float> =
+    val deviceEntryViewAlpha: Flow<Float> =
         combine(
                 transitionAlpha,
                 alphaMultiplierFromShadeExpansion,
             ) { alpha, alphaMultiplier ->
                 alpha * alphaMultiplier
             }
-            .stateIn(scope = scope, started = SharingStarted.WhileSubscribed(), initialValue = 0f)
+            .stateIn(
+                scope = scope,
+                started = SharingStarted.WhileSubscribed(),
+                initialValue = 0f,
+            )
+
+    private fun initialAlphaFromKeyguardState(keyguardState: KeyguardState): Float {
+        return when (keyguardState) {
+            KeyguardState.OFF,
+            KeyguardState.PRIMARY_BOUNCER,
+            KeyguardState.DOZING,
+            KeyguardState.DREAMING,
+            KeyguardState.GLANCEABLE_HUB,
+            KeyguardState.GONE,
+            KeyguardState.OCCLUDED,
+            KeyguardState.DREAMING_LOCKSCREEN_HOSTED, -> 0f
+            KeyguardState.AOD,
+            KeyguardState.ALTERNATE_BOUNCER,
+            KeyguardState.LOCKSCREEN -> 1f
+        }
+    }
     val useBackgroundProtection: StateFlow<Boolean> = isUdfpsSupported
     val burnInOffsets: Flow<BurnInOffsets> =
         deviceEntryUdfpsInteractor.isUdfpsEnrolledAndEnabled
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/OffToLockscreenTransitionViewModel.kt b/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/OffToLockscreenTransitionViewModel.kt
index 74094be..cf6a533 100644
--- a/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/OffToLockscreenTransitionViewModel.kt
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/OffToLockscreenTransitionViewModel.kt
@@ -19,6 +19,7 @@
 import com.android.systemui.dagger.SysUISingleton
 import com.android.systemui.keyguard.shared.model.KeyguardState
 import com.android.systemui.keyguard.ui.KeyguardTransitionAnimationFlow
+import com.android.systemui.keyguard.ui.transitions.DeviceEntryIconTransition
 import javax.inject.Inject
 import kotlin.time.Duration.Companion.milliseconds
 import kotlinx.coroutines.flow.Flow
@@ -28,7 +29,7 @@
 @Inject
 constructor(
     animationFlow: KeyguardTransitionAnimationFlow,
-) {
+) : DeviceEntryIconTransition {
 
     private val transitionAnimation =
         animationFlow.setup(
@@ -43,4 +44,7 @@
             onStep = { it },
             onCancel = { 0f },
         )
+
+    override val deviceEntryParentViewAlpha: Flow<Float> =
+        transitionAnimation.immediatelyTransitionTo(1f)
 }
diff --git a/packages/SystemUI/src/com/android/systemui/qs/tiles/impl/onehanded/domain/OneHandedModeTileDataInteractor.kt b/packages/SystemUI/src/com/android/systemui/qs/tiles/impl/onehanded/domain/OneHandedModeTileDataInteractor.kt
new file mode 100644
index 0000000..8c0fd2c
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/qs/tiles/impl/onehanded/domain/OneHandedModeTileDataInteractor.kt
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2024 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.systemui.qs.tiles.impl.onehanded.domain
+
+import android.os.UserHandle
+import com.android.systemui.accessibility.data.repository.OneHandedModeRepository
+import com.android.systemui.qs.tiles.base.interactor.DataUpdateTrigger
+import com.android.systemui.qs.tiles.base.interactor.QSTileDataInteractor
+import com.android.systemui.qs.tiles.impl.onehanded.domain.model.OneHandedModeTileModel
+import com.android.wm.shell.onehanded.OneHanded
+import javax.inject.Inject
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.flow.map
+
+/** Observes one handed mode state changes providing the [OneHandedModeTileModel]. */
+class OneHandedModeTileDataInteractor
+@Inject
+constructor(
+    private val oneHandedModeRepository: OneHandedModeRepository,
+) : QSTileDataInteractor<OneHandedModeTileModel> {
+
+    override fun tileData(
+        user: UserHandle,
+        triggers: Flow<DataUpdateTrigger>
+    ): Flow<OneHandedModeTileModel> {
+        return oneHandedModeRepository.isEnabled(user).map { OneHandedModeTileModel(it) }
+    }
+    override fun availability(user: UserHandle): Flow<Boolean> =
+        flowOf(OneHanded.sIsSupportOneHandedMode)
+}
diff --git a/packages/SystemUI/src/com/android/systemui/qs/tiles/impl/onehanded/domain/OneHandedModeTileUserActionInteractor.kt b/packages/SystemUI/src/com/android/systemui/qs/tiles/impl/onehanded/domain/OneHandedModeTileUserActionInteractor.kt
new file mode 100644
index 0000000..5cb0e18
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/qs/tiles/impl/onehanded/domain/OneHandedModeTileUserActionInteractor.kt
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2024 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.systemui.qs.tiles.impl.onehanded.domain
+
+import android.content.Intent
+import android.provider.Settings
+import com.android.systemui.accessibility.data.repository.OneHandedModeRepository
+import com.android.systemui.qs.tiles.base.actions.QSTileIntentUserInputHandler
+import com.android.systemui.qs.tiles.base.interactor.QSTileInput
+import com.android.systemui.qs.tiles.base.interactor.QSTileUserActionInteractor
+import com.android.systemui.qs.tiles.impl.onehanded.domain.model.OneHandedModeTileModel
+import com.android.systemui.qs.tiles.viewmodel.QSTileUserAction
+import javax.inject.Inject
+
+/** Handles one handed mode tile clicks. */
+class OneHandedModeTileUserActionInteractor
+@Inject
+constructor(
+    private val oneHandedModeRepository: OneHandedModeRepository,
+    private val qsTileIntentUserActionHandler: QSTileIntentUserInputHandler,
+) : QSTileUserActionInteractor<OneHandedModeTileModel> {
+
+    override suspend fun handleInput(input: QSTileInput<OneHandedModeTileModel>): Unit =
+        with(input) {
+            when (action) {
+                is QSTileUserAction.Click -> {
+                    oneHandedModeRepository.setIsEnabled(
+                        !data.isEnabled,
+                        user,
+                    )
+                }
+                is QSTileUserAction.LongClick -> {
+                    qsTileIntentUserActionHandler.handle(
+                        action.expandable,
+                        Intent(Settings.ACTION_ONE_HANDED_SETTINGS)
+                    )
+                }
+            }
+        }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/qs/tiles/impl/onehanded/domain/model/OneHandedModeTileModel.kt b/packages/SystemUI/src/com/android/systemui/qs/tiles/impl/onehanded/domain/model/OneHandedModeTileModel.kt
new file mode 100644
index 0000000..7cebdfe
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/qs/tiles/impl/onehanded/domain/model/OneHandedModeTileModel.kt
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2024 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.systemui.qs.tiles.impl.onehanded.domain.model
+
+/**
+ * One handed mode tile model.
+ *
+ * @param isEnabled is true when one handed mode is enabled;
+ */
+@JvmInline value class OneHandedModeTileModel(val isEnabled: Boolean)
diff --git a/packages/SystemUI/src/com/android/systemui/qs/tiles/impl/onehanded/ui/OneHandedModeTileMapper.kt b/packages/SystemUI/src/com/android/systemui/qs/tiles/impl/onehanded/ui/OneHandedModeTileMapper.kt
new file mode 100644
index 0000000..9166ed8
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/qs/tiles/impl/onehanded/ui/OneHandedModeTileMapper.kt
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2024 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.systemui.qs.tiles.impl.onehanded.ui
+
+import android.content.res.Resources
+import com.android.systemui.common.shared.model.Icon
+import com.android.systemui.dagger.qualifiers.Main
+import com.android.systemui.qs.tiles.base.interactor.QSTileDataToStateMapper
+import com.android.systemui.qs.tiles.impl.onehanded.domain.model.OneHandedModeTileModel
+import com.android.systemui.qs.tiles.viewmodel.QSTileConfig
+import com.android.systemui.qs.tiles.viewmodel.QSTileState
+import com.android.systemui.res.R
+import javax.inject.Inject
+
+/** Maps [OneHandedModeTileModel] to [QSTileState]. */
+class OneHandedModeTileMapper
+@Inject
+constructor(
+    @Main private val resources: Resources,
+    private val theme: Resources.Theme,
+) : QSTileDataToStateMapper<OneHandedModeTileModel> {
+
+    override fun map(config: QSTileConfig, data: OneHandedModeTileModel): QSTileState =
+        QSTileState.build(resources, theme, config.uiConfig) {
+            val subtitleArray = resources.getStringArray(R.array.tile_states_onehanded)
+            label = resources.getString(R.string.quick_settings_onehanded_label)
+            icon = {
+                Icon.Loaded(
+                    resources.getDrawable(
+                        com.android.internal.R.drawable.ic_qs_one_handed_mode,
+                        theme
+                    ),
+                    null
+                )
+            }
+            if (data.isEnabled) {
+                activationState = QSTileState.ActivationState.ACTIVE
+                secondaryLabel = subtitleArray[2]
+            } else {
+                activationState = QSTileState.ActivationState.INACTIVE
+                secondaryLabel = subtitleArray[1]
+            }
+            sideViewIcon = QSTileState.SideViewIcon.None
+            contentDescription = label
+            supportedActions =
+                setOf(QSTileState.UserAction.CLICK, QSTileState.UserAction.LONG_CLICK)
+        }
+}
diff --git a/packages/SystemUI/tests/utils/src/com/android/systemui/accessibility/data/repository/FakeOneHandedModeRepository.kt b/packages/SystemUI/tests/utils/src/com/android/systemui/accessibility/data/repository/FakeOneHandedModeRepository.kt
new file mode 100644
index 0000000..ac135af
--- /dev/null
+++ b/packages/SystemUI/tests/utils/src/com/android/systemui/accessibility/data/repository/FakeOneHandedModeRepository.kt
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2024 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.systemui.accessibility.data.repository
+
+import android.os.UserHandle
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+
+class FakeOneHandedModeRepository : OneHandedModeRepository {
+    private val userMap = mutableMapOf<Int, MutableStateFlow<Boolean>>()
+
+    override fun isEnabled(userHandle: UserHandle): StateFlow<Boolean> {
+        return getFlow(userHandle.identifier)
+    }
+
+    override suspend fun setIsEnabled(isEnabled: Boolean, userHandle: UserHandle): Boolean {
+        getFlow(userHandle.identifier).value = isEnabled
+        return true
+    }
+
+    /** initializes the flow if already not */
+    private fun getFlow(userId: Int): MutableStateFlow<Boolean> {
+        return userMap.getOrPut(userId) { MutableStateFlow(false) }
+    }
+}
diff --git a/packages/SystemUI/tests/utils/src/com/android/systemui/accessibility/data/repository/OneHandedModeRepositoryKosmos.kt b/packages/SystemUI/tests/utils/src/com/android/systemui/accessibility/data/repository/OneHandedModeRepositoryKosmos.kt
new file mode 100644
index 0000000..9ee200a
--- /dev/null
+++ b/packages/SystemUI/tests/utils/src/com/android/systemui/accessibility/data/repository/OneHandedModeRepositoryKosmos.kt
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2024 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.systemui.accessibility.data.repository
+
+import com.android.systemui.kosmos.Kosmos
+
+val Kosmos.fakeOneHandedModeRepository by Kosmos.Fixture { FakeOneHandedModeRepository() }
+val Kosmos.oneHandedModeRepository by Kosmos.Fixture { fakeOneHandedModeRepository }
diff --git a/packages/SystemUI/tests/utils/src/com/android/systemui/qs/tiles/impl/onehanded/OneHandedModeTileKosmos.kt b/packages/SystemUI/tests/utils/src/com/android/systemui/qs/tiles/impl/onehanded/OneHandedModeTileKosmos.kt
new file mode 100644
index 0000000..d9c0361
--- /dev/null
+++ b/packages/SystemUI/tests/utils/src/com/android/systemui/qs/tiles/impl/onehanded/OneHandedModeTileKosmos.kt
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2024 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.systemui.qs.tiles.impl.onehanded
+
+import com.android.systemui.accessibility.qs.QSAccessibilityModule
+import com.android.systemui.kosmos.Kosmos
+import com.android.systemui.qs.qsEventLogger
+
+val Kosmos.qsOneHandedModeTileConfig by
+    Kosmos.Fixture { QSAccessibilityModule.provideOneHandedTileConfig(qsEventLogger) }
diff --git a/services/core/java/com/android/server/pm/ShortcutService.java b/services/core/java/com/android/server/pm/ShortcutService.java
index 82902d4..9edf3b1 100644
--- a/services/core/java/com/android/server/pm/ShortcutService.java
+++ b/services/core/java/com/android/server/pm/ShortcutService.java
@@ -172,7 +172,7 @@
     static final boolean DEBUG = false; // STOPSHIP if true
     static final boolean DEBUG_LOAD = false; // STOPSHIP if true
     static final boolean DEBUG_PROCSTATE = false; // STOPSHIP if true
-    static final boolean DEBUG_REBOOT = false; // STOPSHIP if true
+    static final boolean DEBUG_REBOOT = true;
 
     @VisibleForTesting
     static final long DEFAULT_RESET_INTERVAL_SEC = 24 * 60 * 60; // 1 day
@@ -3798,24 +3798,36 @@
                 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
                 final boolean archival = intent.getBooleanExtra(Intent.EXTRA_ARCHIVAL, false);
 
+                Slog.d(TAG, "received package broadcast intent: " + intent);
                 switch (action) {
                     case Intent.ACTION_PACKAGE_ADDED:
                         if (replacing) {
+                            Slog.d(TAG, "replacing package: " + packageName + " userId" + userId);
                             handlePackageUpdateFinished(packageName, userId);
                         } else {
+                            Slog.d(TAG, "adding package: " + packageName + " userId" + userId);
                             handlePackageAdded(packageName, userId);
                         }
                         break;
                     case Intent.ACTION_PACKAGE_REMOVED:
                         if (!replacing || (replacing && archival)) {
+                            if (!replacing) {
+                                Slog.d(TAG, "removing package: "
+                                        + packageName + " userId" + userId);
+                            } else if (archival) {
+                                Slog.d(TAG, "archiving package: "
+                                        + packageName + " userId" + userId);
+                            }
                             handlePackageRemoved(packageName, userId);
                         }
                         break;
                     case Intent.ACTION_PACKAGE_CHANGED:
+                        Slog.d(TAG, "changing package: " + packageName + " userId" + userId);
                         handlePackageChanged(packageName, userId);
-
                         break;
                     case Intent.ACTION_PACKAGE_DATA_CLEARED:
+                        Slog.d(TAG, "clearing data for package: "
+                                + packageName + " userId" + userId);
                         handlePackageDataCleared(packageName, userId);
                         break;
                 }
diff --git a/tools/aapt2/link/ManifestFixer.cpp b/tools/aapt2/link/ManifestFixer.cpp
index f1e4ead..669cddb 100644
--- a/tools/aapt2/link/ManifestFixer.cpp
+++ b/tools/aapt2/link/ManifestFixer.cpp
@@ -443,7 +443,7 @@
   manifest_action.Action(AutoGenerateIsSplitRequired);
   manifest_action.Action(VerifyManifest);
   manifest_action.Action(FixCoreAppAttribute);
-  manifest_action.Action([&](xml::Element* el) -> bool {
+  manifest_action.Action([this, diag](xml::Element* el) -> bool {
     EnsureNamespaceIsDeclared("android", xml::kSchemaAndroid, &el->namespace_decls);
 
     if (options_.version_name_default) {
@@ -506,7 +506,7 @@
   manifest_action["eat-comment"];
 
   // Uses-sdk actions.
-  manifest_action["uses-sdk"].Action([&](xml::Element* el) -> bool {
+  manifest_action["uses-sdk"].Action([this](xml::Element* el) -> bool {
     if (options_.min_sdk_version_default &&
         el->FindAttribute(xml::kSchemaAndroid, "minSdkVersion") == nullptr) {
       // There was no minSdkVersion defined and we have a default to assign.
@@ -528,7 +528,7 @@
 
   // Instrumentation actions.
   manifest_action["instrumentation"].Action(RequiredNameIsJavaClassName);
-  manifest_action["instrumentation"].Action([&](xml::Element* el) -> bool {
+  manifest_action["instrumentation"].Action([this](xml::Element* el) -> bool {
     if (!options_.rename_instrumentation_target_package) {
       return true;
     }
@@ -544,7 +544,7 @@
   manifest_action["attribution"];
   manifest_action["attribution"]["inherit-from"];
   manifest_action["original-package"];
-  manifest_action["overlay"].Action([&](xml::Element* el) -> bool {
+  manifest_action["overlay"].Action([this](xml::Element* el) -> bool {
     if (options_.rename_overlay_target_package) {
       if (xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "targetPackage")) {
         attr->value = options_.rename_overlay_target_package.value();
@@ -625,7 +625,7 @@
   uses_package_action["additional-certificate"];
 
   if (options_.debug_mode) {
-    application_action.Action([&](xml::Element* el) -> bool {
+    application_action.Action([](xml::Element* el) -> bool {
       xml::Attribute *attr = el->FindOrCreateAttribute(xml::kSchemaAndroid, "debuggable");
       attr->value = "true";
       return true;