am 246bf85a: Merge "Fix NPE with display lists when view not attached" into honeycomb (19312cfe) · Commits · e / os / android_frameworks_base

core/java/android/view/View.java

+16 −1

Original line number	Diff line number	Diff line
		@@ -8228,6 +8228,21 @@ public class View implements Drawable.Callback, KeyEvent.Callback, Accessibility
		*/
		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
		* without executing its draw method.</p>
		@@ -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;
		}

+1 −1

Original line number	Diff line number	Diff line
		@@ -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();
		}
		}
		}