Android/frameworks_base
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Reduce extra a11y events when alpha changes.

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am: 9937f81ac6

Change-Id: I23a097e1de51449b7dfa4a4986255fec4c8c3b05
This commit is contained in:
Phil Weaver
2016-08-02 17:10:03 +00:00
committed by android-build-merger
parent eceb91e5f2 9937f81ac6
commit 2dd6ce7aff
1 changed files with 4 additions and 2 deletions
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6
core/java/android/view/View.java
View File

@@ -12359,6 +12359,10 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
public void setAlpha(@FloatRange(from=0.0, to=1.0) float alpha) {
ensureTransformationInfo();
if (mTransformationInfo.mAlpha != alpha) {
// Report visibility changes, which can affect children, to accessibility
if ((alpha == 0) ^ (mTransformationInfo.mAlpha == 0)) {
notifySubtreeAccessibilityStateChangedIfNeeded();
}
mTransformationInfo.mAlpha = alpha;
if (onSetAlpha((int) (alpha * 255))) {
mPrivateFlags |= PFLAG_ALPHA_SET;
@@ -12369,8 +12373,6 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
mPrivateFlags &= ~PFLAG_ALPHA_SET;
invalidateViewProperty(true, false);
mRenderNode.setAlpha(getFinalAlpha());
notifyViewAccessibilityStateChangedIfNeeded(
AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
}
}
}