}
/**
- * Looks for a layer with the given ID and returns its {@link Drawable}.
- * <p>
- * If multiple layers are found for the given ID, returns the
- * {@link Drawable} for the matching layer at the highest index.
+ * Look for a layer with the given id, and returns its {@link Drawable}.
*
* @param id The layer ID to search for.
- * @return The {@link Drawable} for the highest-indexed layer that has the
- * given ID, or null if not found.
+ * @return The {@link Drawable} of the layer that has the given id in the hierarchy or null.
*/
public Drawable findDrawableByLayerId(int id) {
final ChildDrawable[] layers = mLayerState.mChildren;
- for (int i = mLayerState.mNum - 1; i >= 0; i--) {
+ final int N = mLayerState.mNum;
+ for (int i = 0; i < N; i++) {
if (layers[i].mId == id) {
return layers[i].mDrawable;
}
}
/**
- * Invalidates cached padding and recomputes child bounds.
+ * Invalidates cached padding.
*/
private void invalidatePadding() {
mHasCachedPadding = false;
@Override
public void invalidateDrawable(Drawable who) {
- // Something changed, maybe it was the child drawable's padding.
- invalidatePadding();
- invalidateSelf();
+ final Callback callback = getCallback();
+ if (callback != null) {
+ callback.invalidateDrawable(this);
+ }
}
@Override