[automerger] Fix bug where user gets stuck in overscroll. am: 27ad267a81 (572da280) · Commits · e / os / android_packages_apps_Trebuchet

src/com/android/launcher3/allapps/AllAppsRecyclerView.java

+14 −10

Original line number	Diff line number	Diff line
		@@ -110,12 +110,6 @@ public class AllAppsRecyclerView extends BaseRecyclerView implements LogContaine
		}
		}

		@Override
		public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent ev) {
		mPullDetector.onTouchEvent(ev);
		return super.onInterceptTouchEvent(rv, ev) \|\| mOverScrollHelper.isInOverScroll();
		}

		@Override
		public boolean onTouchEvent(MotionEvent e) {
		mPullDetector.onTouchEvent(e);
		@@ -287,7 +281,8 @@ public class AllAppsRecyclerView extends BaseRecyclerView implements LogContaine

		@Override
		public boolean onInterceptTouchEvent(MotionEvent e) {
		boolean result = super.onInterceptTouchEvent(e);
		mPullDetector.onTouchEvent(e);
		boolean result = super.onInterceptTouchEvent(e) \|\| mOverScrollHelper.isInOverScroll();
		if (!result && e.getAction() == MotionEvent.ACTION_DOWN
		&& mEmptySearchBackground != null && mEmptySearchBackground.getAlpha() > 0) {
		mEmptySearchBackground.setHotspot(e.getX(), e.getY());
		@@ -562,11 +557,16 @@ public class AllAppsRecyclerView extends BaseRecyclerView implements LogContaine
		// and if one of the following criteria are met:
		// - User scrolls down when they're already at the bottom.
		// - User starts scrolling up, hits the top, and continues scrolling up.
		boolean wasInOverScroll = mIsInOverScroll;
		mIsInOverScroll = !mScrollbar.isDraggingThumb() &&
		((!canScrollVertically(1) && displacement < 0) \|\|
		(!canScrollVertically(-1) && isScrollingUp && mFirstScrollYOnScrollUp != 0));

		if (mIsInOverScroll) {
		if (wasInOverScroll && !mIsInOverScroll) {
		// Exit overscroll. This can happen when the user is in overscroll and then
		// scrolls the opposite way.
		reset(false /* shouldSpring */);
		} else if (mIsInOverScroll) {
		if (Float.compare(mFirstDisplacement, 0) == 0) {
		// Because users can scroll before entering overscroll, we need to
		// subtract the amount where the user was not in overscroll.
		@@ -581,11 +581,15 @@ public class AllAppsRecyclerView extends BaseRecyclerView implements LogContaine

		@Override
		public void onDragEnd(float velocity, boolean fling) {
		reset(mIsInOverScroll /* shouldSpring */);
		}

		private void reset(boolean shouldSpring) {
		float y = getContentTranslationY();
		if (Float.compare(y, 0) != 0) {
		if (FeatureFlags.LAUNCHER3_PHYSICS) {
		if (FeatureFlags.LAUNCHER3_PHYSICS && shouldSpring) {
		// We calculate our own velocity to give the springs the desired effect.
		velocity = y / getDampedOverScroll(getHeight()) * MAX_RELEASE_VELOCITY;
		float velocity = y / getDampedOverScroll(getHeight()) * MAX_RELEASE_VELOCITY;
		// We want to negate the velocity because we are moving to 0 from -1 due to the
		// downward motion. (y-axis -1 is above 0).
		mSpringAnimationHandler.animateToPositionWithVelocity(0, -1, -velocity);