private SimpleFingerGestures mySfg = new SimpleFingerGestures();

mySfg.setOnFingerGestureListener(new SimpleFingerGestures.OnFingerGestureListener() {
            @Override
            public boolean onSwipeUp(int fingers, long gestureDuration, double gestureDistance) {
                grtv.setText("swiped " + fingers + " up");
                return false;
            }

            @Override
            public boolean onSwipeDown(int fingers, long gestureDuration, double gestureDistance) {
                grtv.setText("swiped " + fingers + " down");
                return false;
            }

            @Override
            public boolean onSwipeLeft(int fingers, long gestureDuration, double gestureDistance) {
                grtv.setText("swiped " + fingers + " left");
                return false;
            }

            @Override
            public boolean onSwipeRight(int fingers, long gestureDuration, double gestureDistance) {
                grtv.setText("swiped " + fingers + " right");
                return false;
            }

            @Override
            public boolean onPinch(int fingers, long gestureDuration, double gestureDistance) {
                grtv.setText("pinch");
                return false;
            }

            @Override
            public boolean onUnpinch(int fingers, long gestureDuration, double gestureDistance) {
                grtv.setText("unpinch");
                return false;
            }

            @Override
            public boolean onDoubleTap(int fingers) {
                return false;
            }
        });