Merge "Validate pointer index in PagedView#onMotionEvent" into ub-launcher3-rvc-dev

src/com/android/launcher3/PagedView.java

@@ -1198,6 +1198,8 @@ public abstract class PagedView<T extends View & PageIndicator> extends ViewGrou
             if (mIsBeingDragged) {
                 final int activePointerId = mActivePointerId;
                 final int pointerIndex = ev.findPointerIndex(activePointerId);
+                if (pointerIndex == -1) return true;
+
                 final float primaryDirection = mOrientationHandler.getPrimaryDirection(ev,
                     pointerIndex);
                 final VelocityTracker velocityTracker = mVelocityTracker;