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    OnSwipeTouchListener.java:

    import android.view.GestureDetector;
    import android.view.GestureDetector.SimpleOnGestureListener;
    import android.view.MotionEvent;
    import android.view.View;
    import android.view.View.OnTouchListener;
    
    public class OnSwipeTouchListener implements OnTouchListener {
    
        private final GestureDetector gestureDetector;
    
        public OnSwipeTouchListener (Context ctx){
            gestureDetector = new GestureDetector(ctx, new GestureListener());
        }
    
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            return gestureDetector.onTouchEvent(event);
        }
    
        private final class GestureListener extends SimpleOnGestureListener {
    
            private static final int SWIPE_THRESHOLD = 100;
            private static final int SWIPE_VELOCITY_THRESHOLD = 100;
    
            @Override
            public boolean onDown(MotionEvent e) {
                return true;
            }
    
            @Override
            public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
                boolean result = false;
                try {
                    float diffY = e2.getY() - e1.getY();
                    float diffX = e2.getX() - e1.getX();
                    if (Math.abs(diffX) > Math.abs(diffY)) {
                        if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
                            if (diffX > 0) {
                                onSwipeRight();
                            } else {
                                onSwipeLeft();
                            }
                        }
                        result = true;
                    } 
                    else if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
                            if (diffY > 0) {
                                onSwipeBottom();
                            } else {
                                onSwipeTop();
                            }
                        }
                        result = true;
    
                } catch (Exception exception) {
                    exception.printStackTrace();
                }
                return result;
            }
        }
    
        public void onSwipeRight() {
        }
    
        public void onSwipeLeft() {
        }
    
        public void onSwipeTop() {
        }
    
        public void onSwipeBottom() {
        }
    }
    

    이런식으로 쓰시면 됩니다.

    imageView.setOnTouchListener(new OnSwipeTouchListener() {
        public void onSwipeTop() {
            Toast.makeText(MyActivity.this, "top", Toast.LENGTH_SHORT).show();
        }
        public void onSwipeRight() {
            Toast.makeText(MyActivity.this, "right", Toast.LENGTH_SHORT).show();
        }
        public void onSwipeLeft() {
            Toast.makeText(MyActivity.this, "left", Toast.LENGTH_SHORT).show();
        }
        public void onSwipeBottom() {
            Toast.makeText(MyActivity.this, "bottom", Toast.LENGTH_SHORT).show();
        }
    
    });
    

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