Adding null checks for unset stack. (Bug 18329447) (4ee0eb3c) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java

+18 −1

Original line number	Diff line number	Diff line
		@@ -437,6 +437,8 @@ public class TaskStackView extends FrameLayout implements TaskStack.TaskStackCal
		/** Updates the min and max virtual scroll bounds */
		void updateMinMaxScroll(boolean boundScrollToNewMinMax, boolean launchedWithAltTab,
		boolean launchedFromHome) {
		if (mStack == null) return;

		// Compute the min and max scroll values
		mLayoutAlgorithm.computeMinMaxScroll(mStack.getTasks(), launchedWithAltTab, launchedFromHome);

		@@ -561,6 +563,8 @@ public class TaskStackView extends FrameLayout implements TaskStack.TaskStackCal
		@Override
		public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
		super.onInitializeAccessibilityEvent(event);
		if (mStack == null) return;

		int childCount = getChildCount();
		if (childCount > 0) {
		TaskView backMostTask = (TaskView) getChildAt(0);
		@@ -635,6 +639,11 @@ public class TaskStackView extends FrameLayout implements TaskStack.TaskStackCal
		*/
		@Override
		protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		if (mStack == null) {
		super.onMeasure(widthMeasureSpec, heightMeasureSpec);
		return;
		}

		int width = MeasureSpec.getSize(widthMeasureSpec);
		int height = MeasureSpec.getSize(heightMeasureSpec);

		@@ -680,6 +689,11 @@ public class TaskStackView extends FrameLayout implements TaskStack.TaskStackCal
		*/
		@Override
		protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
		if (mStack == null) {
		super.onLayout(changed, left, top, right, bottom);
		return;
		}

		// Layout each of the children
		int childCount = getChildCount();
		for (int i = 0; i < childCount; i++) {
		@@ -837,7 +851,6 @@ public class TaskStackView extends FrameLayout implements TaskStack.TaskStackCal

		/** Final callback after Recents is finally hidden. */
		void onRecentsHidden() {
		reset();
		setStack(null);
		}

		@@ -1012,6 +1025,8 @@ public class TaskStackView extends FrameLayout implements TaskStack.TaskStackCal

		@Override
		public void prepareViewToLeavePool(TaskView tv, Task task, boolean isNewView) {
		if (mStack == null) return;

		// It is possible for a view to be returned to the view pool before it is laid out,
		// which means that we will need to relayout the view when it is first used next.
		boolean requiresRelayout = tv.getWidth() <= 0 && !isNewView;
		@@ -1150,6 +1165,8 @@ public class TaskStackView extends FrameLayout implements TaskStack.TaskStackCal

		@Override
		public void onPackagesChanged(RecentsPackageMonitor monitor, String packageName, int userId) {
		if (mStack == null) return;

		// Compute which components need to be removed
		HashSet<ComponentName> removedComponents = monitor.computeComponentsRemoved(
		mStack.getTaskKeys(), packageName, userId);