监听界面左右滑动

private GestureDetector gestureDetector;

gestureDetector = new GestureDetector(this,onGestureListener);

  private GestureDetector.OnGestureListener onGestureListener =
            new GestureDetector.SimpleOnGestureListener() {
                @Override
                public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
                                       float velocityY) {
                    float x = e2.getX() - e1.getX();
//                    float y = e2.getY() - e1.getY();

                    if (x > 0) {
                        doResult(RIGHT);
                    } else if (x < 0) {
                        doResult(LEFT);
                    }
                    return true;
                }
            };

    public void doResult(int action) {

        switch (action) {
            case RIGHT:
                System.out.println("go right");
                break;

            case LEFT:
                System.out.println("go left");
                break;

        }
    }

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        return gestureDetector.onTouchEvent(event);
    }