Android 6.0 Marshmallow : Weird error with fragment animation

Question

One of my apps in the app store works perfectly fine with Android 5.0, but since today I have my device upgraded to 6.0 I get strange errors. I narrowed it down to the fragment

Answer 1

For me it was a NullPointer exception masked as this because of Proguard obfuscation. Run without Proguard and hopefully you'll see the underlying exception.

Answer 2

This is bug on Marshmallow when we do scale animation. For now we found a workaround by setting view.setLayerType(View.LAYER_TYPE_SOFTWARE) see documentation

Answer 3

I got this exception and same problem Failed to dispatch window animation state change.android.os.DeadObjectException.

apparently this happened because i forgot to mention activity in manifest file. I was able to fix it by adding activity in AndroidManifest.xml file.

simply added following with activity class name and solved the problem

example :

 <activity
        android:name="packageName.ClassName"
       android:configChanges="orientation|keyboardHidden|screenSize|screenLayout"
        android:screenOrientation="portrait" 
        android:theme="@style/Theme.ActionBarSize_all_view">
    </activity>

Answer 4

In my case, my app didn't crash but the transition between activities was buggy on >6.0. The reason was that one of the activities had the windowBackground property from its style set to @null. I commented it and it got fixed.

<style name="CustomActionBarTheme" parent="@style/Theme.AppCompat.Light.DarkActionBar">    
   <item name="android:windowBackground">@null</item>
</style>