Merge "Fix case of gesture being stuck when the Launcher is stopped mid-gesture" into tm-qpr-dev am: a4512046cf

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/19939112

Change-Id: I59734e44784feda5d7920060a66b2db2cc681f15
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java

@@ -1140,6 +1140,13 @@ public abstract class AbsSwipeUpHandler<T extends StatefulActivity<S>,
             boolean isCancel) {
         long duration = MAX_SWIPE_DURATION;
         float currentShift = mCurrentShift.value;
+        boolean recentsVisible = mRecentsView != null
+                && (mRecentsView.getWindowVisibility() == View.VISIBLE);
+        if (!recentsVisible) {
+            // We've hit a case where Launcher is been stopped mid-gesture, in this case, force
+            // a LAST_TASK end target
+            isCancel = true;
+        }
         final GestureEndTarget endTarget = calculateEndTarget(velocity, endVelocity,
                 isFling, isCancel);
         // Set the state, but don't notify until the animation completes
@@ -1219,7 +1226,7 @@ public abstract class AbsSwipeUpHandler<T extends StatefulActivity<S>,
 
         // Let RecentsView handle the scrolling to the task, which we launch in startNewTask()
         // or resumeLastTask().
-        if (mRecentsView != null) {
+        if (recentsVisible) {
             ActiveGestureLog.INSTANCE.trackEvent(ActiveGestureErrorDetector.GestureEvent
                     .SET_ON_PAGE_TRANSITION_END_CALLBACK);
             mRecentsView.setOnPageTransitionEndCallback(