animateLayoutChanges does not work well with nested layout?

Question

I have a nested layout like the following:

Answer 1

We had added the android:animateLayoutChanges attribute to our LinearLayout but the change didn’t trigger an animation. To fix that, use this code:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
((ViewGroup) findViewById(R.id.llRoot)).getLayoutTransition()
      .enableTransitionType(LayoutTransition.CHANGING);
}

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