IssueTracker

Trying to reproduce this on my 4.2.2 (v17) Nexus 4. Added this drawable:

<transition xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:drawable="@drawable/test_drawable_blue"/>
    <item android:drawable="@drawable/test_drawable_green"/>
</transition>

where blue/green drawables look like this:

<shape
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <size
        android:width="@dimen/drawable_large_size"
        android:height="@dimen/drawable_small_size" />
    <solid
        android:color="@color/test_blue" />
</shape>

Then added this test:

    @Test
    public void testMutateTransitionDrawable() {
        Drawable drawable = ResourcesCompat.getDrawable(mResources,
                R.drawable.test_transition_drawable, null);
        assertTrue(drawable instanceof TransitionDrawable);

        Drawable mutated = drawable.mutate();
        assertTrue(drawable instanceof TransitionDrawable);
        assertTrue(mutated instanceof TransitionDrawable);
    }

It passes on the device. Going to also try on other earlier devices a bit later in the day once they are charged.

Also not reproducible on Galaxy Nexus running 4.0.1 (v14), 4.0.4 (v15) and 4.2.2 (v17)

https://android-review.googlesource.com/c/platform/frameworks/support/+/960032 with the test. Closing as not reproducible. If this is still happening for you, we'd need to see either a test (same as in this CL) or a small, standalone sample project that reproduces this issue on v17 (or other) devices.

Project: platform/frameworks/support
Branch: androidx-main

commit 0d8eb4081585d1be1997cb097f5fd54b41ddf8bb
Author: Alex Vanyo <vanyo@google.com>
Date:   Tue Nov 23 01:06:28 2021

    Convert WindowInsetsControllerCompat behavior to depend on a View to align behavior
   
    Relnote: Converted WindowInsetsControllerCompat to depend on a View instead of a Window or the platform WindowInsetsController. This improves behavior with Dialogs, showing the IME, and ensures the non-deprecated creation methods workaround https://issuetracker.google.com/issues/180881870.
   
    Bug: 207401542,210121779
    Test: Updated and new tests
   
    Change-Id: I292640cb4acc39e47a4d2ce0502293d42468ed67

M       core/core/api/restricted_current.txt
M       core/core/src/androidTest/java/androidx/core/view/WindowInsetsAnimationCompatActivityTest.kt
M       core/core/src/main/java/androidx/core/view/ViewCompat.java
M       core/core/api/public_plus_experimental_current.txt
M       samples/Support4Demos/src/main/java/com/example/android/supportv4/view/WindowInsetsControllerPlayground.kt
M       core/core/src/main/java/androidx/core/view/WindowCompat.java
M       core/core/src/androidTest/java/androidx/core/view/WindowInsetsControllerCompatActivityTest.kt
M       core/core/api/current.txt
M       core/core/src/main/java/androidx/core/view/WindowInsetsControllerCompat.java
M       core/core/src/androidTest/java/androidx/core/view/WindowInsetsCompatActivityTest.kt
M       core/core/src/androidTest/java/androidx/core/view/ViewCompatTest.java

https://android-review.googlesource.com/1900054