Stop using custom activity transition, rely on system default in these cases

-> workaround for platform issue related to this resource, but also
   a decent code cleanup

issue 20006693

Change-Id: Iea3a2fb14be5ed78d882ddf9d970b12d177f4249
diff --git a/res/anim/fade_in_fast.xml b/res/anim/fade_in_fast.xml
deleted file mode 100644
index 4fa9847..0000000
--- a/res/anim/fade_in_fast.xml
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2009 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.
--->
-
-<alpha xmlns:android="http://schemas.android.com/apk/res/android"
-    android:interpolator="@android:anim/accelerate_interpolator"
-
-    android:fromAlpha="0.0"
-    android:toAlpha="1.0"
-
-    android:duration="@android:integer/config_mediumAnimTime" />
diff --git a/res/anim/fade_out_fast.xml b/res/anim/fade_out_fast.xml
deleted file mode 100644
index a061a6c..0000000
--- a/res/anim/fade_out_fast.xml
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2009 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.
--->
-
-<alpha xmlns:android="http://schemas.android.com/apk/res/android"
-    android:interpolator="@android:anim/accelerate_interpolator"
-
-    android:fromAlpha="1.0"
-    android:toAlpha="0.0"
-
-    android:duration="@android:integer/config_mediumAnimTime" />
diff --git a/res/anim/no_anim.xml b/res/anim/no_anim.xml
deleted file mode 100644
index 02b1625..0000000
--- a/res/anim/no_anim.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2014 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.
--->
-
-<alpha xmlns:android="http://schemas.android.com/apk/res/android"
-    android:duration="417" />
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 0414a5b..5b8eaef 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -2939,9 +2939,10 @@
             }
 
             Bundle optsBundle = null;
-            if (useLaunchAnimation) {
-                ActivityOptions opts = Utilities.isLmpOrAbove() ?
-                        ActivityOptions.makeCustomAnimation(this, R.anim.task_open_enter, R.anim.no_anim) :
+            if (useLaunchAnimation && !Utilities.isLmpOrAbove()) {
+                // On pre-L devices, we use the scale up transition.
+                // Otherwise we use system default.
+                ActivityOptions opts =
                         ActivityOptions.makeScaleUpAnimation(v, 0, 0, v.getMeasuredWidth(), v.getMeasuredHeight());
                 optsBundle = opts.toBundle();
             }