public class GestureTest extends Activity implements OnTouchListener{
 
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
 
    // init TextView
    TextView tv = (TextView) findViewById(R.id.page);
    // set OnTouchListener on TextView
    tv.setOnTouchListener(this);
    // show some text
    tv.setText(R.string.text);
  }
 
  @Override
  public boolean onTouch(View v, MotionEvent event) {
    Toast.makeText(this, "onTouch", Toast.LENGTH_SHORT).show();
    return false;
  }

public class GestureTest extends Activity implements OnTouchListener,
    OnGestureListener {
...
}

@Override
  public boolean onTouch(View v, MotionEvent event) {
    // OnGestureListener will analyzes the given motion event
    return mGestureDetector.onTouchEvent(event);
  }

// 用户轻触触摸屏，由1个MotionEvent ACTION_DOWN触发
  @Override
  public boolean onDown(MotionEvent e) {
    // TODO Auto-generated method stub
    Toast.makeText(this, "onDown", Toast.LENGTH_SHORT).show();
    return false;
  }
 
  // 用户轻触触摸屏，尚未松开或拖动，由一个1个MotionEvent ACTION_DOWN触发
  // 注意和onDown()的区别，强调的是没有松开或者拖动的状态
  @Override
  public void onShowPress(MotionEvent e) {
    // TODO Auto-generated method stub
  }
 
  // 用户（轻触触摸屏后）松开，由一个1个MotionEvent ACTION_UP触发
  @Override
  public boolean onSingleTapUp(MotionEvent e) {
    // TODO Auto-generated method stub
    return false;
  }
 
  // 用户按下触摸屏、快速移动后松开，由1个MotionEvent ACTION_DOWN, 多个ACTION_MOVE, 1个ACTION_UP触发
  @Override
  public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
      float velocityY) {
    // TODO Auto-generated method stub
    return false;
  }
 
  // 用户长按触摸屏，由多个MotionEvent ACTION_DOWN触发
  @Override
  public void onLongPress(MotionEvent e) {
    // TODO Auto-generated method stub
 
  }
 
  // 用户按下触摸屏，并拖动，由1个MotionEvent ACTION_DOWN, 多个ACTION_MOVE触发
  @Override
  public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
      float distanceY) {
    // TODO Auto-generated method stub
    return false;
  }

@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
    float velocityY) {
  // 参数解释：
  // e1：第1个ACTION_DOWN MotionEvent
  // e2：最后一个ACTION_MOVE MotionEvent
  // velocityX：X轴上的移动速度，像素/秒
  // velocityY：Y轴上的移动速度，像素/秒
 
  // 触发条件 ：
  // X轴的坐标位移大于FLING_MIN_DISTANCE，且移动速度大于FLING_MIN_VELOCITY个像素/秒
 
  if (e1.getX() - e2.getX() > FLING_MIN_DISTANCE
      && Math.abs(velocityX) > FLING_MIN_VELOCITY) {
    // Fling left
    Toast.makeText(this, "Fling Left", Toast.LENGTH_SHORT).show();
  } else if (e2.getX() - e1.getX() > FLING_MIN_DISTANCE
      && Math.abs(velocityX) > FLING_MIN_VELOCITY) {
    // Fling right
    Toast.makeText(this, "Fling Right", Toast.LENGTH_SHORT).show();
  }
 
  return false;
}

tv.setLongClickable(true);

@Override 
 public boolean onTouchEvent(MotionEvent event) { 

return mGestureDetector.onTouchEvent(event);

｝

 View view = findViewById(R.id.view);
    view.setOnTouchListener(this);
    view.setLongClickable(true);
    GestureDetector mGestureDetector = new GestureDetector(this);

@Override
  public boolean onTouch(View view, MotionEvent event) {
    // TODO Auto-generated method stub
    return mGestureDetector.onTouchEvent(event);
  }

private float FLING_MIN_DISTANCE = 100;
  private float FLING_MIN_VELOCITY=10;
  @Override
  public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
      float velocityY) {
    // TODO Auto-generated method stub
 
    System.out.println("onFling");
 
    if (e1.getX() - e2.getX() > FLING_MIN_DISTANCE
        && Math.abs(velocityX) > FLING_MIN_VELOCITY) {
      // Fling left
      System.out.println("左");
      Toast.makeText(this, "左", Toast.LENGTH_SHORT).show();
    } else if (e2.getX() - e1.getX() > FLING_MIN_DISTANCE
        && Math.abs(velocityX) > FLING_MIN_VELOCITY) {
      // Fling right
      System.out.println("右");
      Toast.makeText(this, "右", Toast.LENGTH_SHORT).show();
    }
 
    return false;
  }