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Commit 10d312b5 authored by George Mount's avatar George Mount
Browse files

Reset accessibility after Activity enter transition. 

Bug 25504648

Invisible views don't respond to accessibility. The transition
system uses a sneaky way to make an invisible view visible
with the GhostView, so the views becoming visible doesn't
trigger the accessibility system to recognize the newly-
visible views. This forces accessibility to rescan the contents
after the transition completes.

Change-Id: If57114b7e7ee304707d53dd235cd7795df8f509f
parent d5f94468

core/java/android/app/EnterTransitionCoordinator.java

+5 −0
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ import android.view.ViewGroup; 
import android.view.ViewGroupOverlay;

import android.view.ViewTreeObserver;

import android.view.Window;

import android.view.accessibility.AccessibilityEvent;



import java.util.ArrayList;
@@ -500,6 +501,10 @@ class EnterTransitionCoordinator extends ActivityTransitionCoordinator { 
    @Override

    protected void onTransitionsComplete() {

        moveSharedElementsFromOverlay();

        final ViewGroup decorView = getDecor();

        if (decorView != null) {

            decorView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);

        }

    }



    private void sharedElementTransitionStarted() {