Cancel animation whenever MotionEvent.ACTION_DOWN is detected

            } else if (!mLauncher.isAllAppsVisible() && !shouldPossiblyIntercept(ev)) {

                mNoIntercept = true;

            } else {

                // This controller is now going to handle all the touch events.

                // First cancel any animation that is in progress.

                cancelAnimation();

                // Now figure out which direction scroll events the controller will start

                // calling the callbacks.

                int conditionsToReportScroll = 0;

    @Override

    public void onScrollStart(boolean start) {

        cancelAnimation();

        mCurrentAnimation = LauncherAnimUtils.createAnimatorSet();

        mShiftStart = mAppsView.getTranslationY();

        preparePull(start);