Invisible views can't start animations
The invalidation logic was broken for invisible views, causing
a problem when an animation was set to start on an invisible view
(to fade it in), but the view would not propagate the invalidation
event that would trigger the start of the animation rendering.
Fix: reset the DRAWN flag when a view becomes invisible to allow
the invalidation logic to work as intended.
Change-Id: Ibf49c6e8b39506a92a6e5f45cb8a12626ae4f931
diff --git a/core/java/android/view/View.java b/core/java/android/view/View.java
index b0e651a..eb0b7d0 100644
--- a/core/java/android/view/View.java
+++ b/core/java/android/view/View.java
@@ -6089,7 +6089,11 @@
/* Check if the VISIBLE bit has changed */
if ((changed & INVISIBLE) != 0) {
needGlobalAttributesUpdate(false);
- invalidate(true);
+ /*
+ * If this view is becoming invisible, set the DRAWN flag so that
+ * the next invalidate() will not be skipped.
+ */
+ mPrivateFlags |= DRAWN;
if (((mViewFlags & VISIBILITY_MASK) == INVISIBLE) && hasFocus()) {
// root view becoming invisible shouldn't clear focus