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-rw-r--r--core/java/android/view/View.java17
-rw-r--r--core/java/android/view/ViewGroup.java2
2 files changed, 17 insertions, 2 deletions
diff --git a/core/java/android/view/View.java b/core/java/android/view/View.java
index c64f564..5e8f31a 100644
--- a/core/java/android/view/View.java
+++ b/core/java/android/view/View.java
@@ -8227,6 +8227,21 @@ public class View implements Drawable.Callback, KeyEvent.Callback, Accessibility
* @hide
*/
protected void dispatchGetDisplayList() {}
+
+ /**
+ * A view that is not attached or hardware accelerated cannot create a display list.
+ * This method checks these conditions and returns the appropriate result.
+ *
+ * @return true if view has the ability to create a display list, false otherwise.
+ *
+ * @hide
+ */
+ public boolean canHaveDisplayList() {
+ if (mAttachInfo == null || mAttachInfo.mHardwareRenderer == null) {
+ return false;
+ }
+ return true;
+ }
/**
* <p>Returns a display list that can be used to draw this view again
@@ -8237,7 +8252,7 @@ public class View implements Drawable.Callback, KeyEvent.Callback, Accessibility
* @hide
*/
public DisplayList getDisplayList() {
- if (mAttachInfo == null || mAttachInfo.mHardwareRenderer == null) {
+ if (!canHaveDisplayList()) {
return null;
}
diff --git a/core/java/android/view/ViewGroup.java b/core/java/android/view/ViewGroup.java
index 1313b78..d0509b2 100644
--- a/core/java/android/view/ViewGroup.java
+++ b/core/java/android/view/ViewGroup.java
@@ -2381,7 +2381,7 @@ public abstract class ViewGroup extends View implements ViewParent, ViewManager
} else if (layerType == LAYER_TYPE_NONE) {
// Delay getting the display list until animation-driven alpha values are
// set up and possibly passed on to the view
- hasDisplayList = true;
+ hasDisplayList = child.canHaveDisplayList();
}
}
}