UIGestureRecognizer是一個抽象類，定義了所有手勢的基本行為，它有6個子類處理具體的手勢：

1.UITapGestureRecognizer （任意手指任意次數的點擊）

// 點擊次數

numberOfTapsRequired

// 手指個數

numberOfTouchesRequired

1. UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] init];
2. [tapGestureRecognizer addTarget:self action:@selector(gestureRecognizerHandle:)];
3. [tapGestureRecognizer setNumberOfTapsRequired:2];
4. [tapGestureRecognizer setNumberOfTouchesRequired:2];
5. [self.view addGestureRecognizer:tapGestureRecognizer];
6. [tapGestureRecognizer release];

    

    

   2.UIPinchGestureRecognizer （兩個手指捏合動作）

    

   // 手指捏合，大於1表示兩個手指之間的距離變大，小於1表示兩個手指之間的距離變小

   scale

   // 手指捏合動作時的速率（加速度）

   velocity

    

    

   [plain]
   1. UIPinchGestureRecognizer *pinchGestureRecognizer = [[UIPinchGestureRecognizer alloc] init];
   2. [pinchGestureRecognizer addTarget:self action:@selector(gestureRecognizerHandle:)];
   3. [self.view addGestureRecognizer:pinchGestureRecognizer];
   4. [pinchGestureRecognizer release];
      

       

      3.UIPanGestureRecognizer (搖動或者拖拽)

       

       

      // 最少手指個數

      minimumNumberOfTouches

      // 最多手指個數

      maximumNumberOfTouches

      
      

       

      [plain]
      1. UIPanGestureRecognizer *panGestureRecognizer = [[UIPanGestureRecognizer alloc] init];
      2. [panGestureRecognizer addTarget:self action:@selector(gestureRecognizerHandle:)];
      3. [panGestureRecognizer setMinimumNumberOfTouches:1];
      4. [panGestureRecognizer setMaximumNumberOfTouches:5];
      5. [self.view addGestureRecognizer:panGestureRecognizer];
      6. [panGestureRecognizer release];
         

          

         4.UISwipeGestureRecognizer (手指在屏幕上滑動操作手勢)

          

         // 滑動手指的個數

         numberOfTouchesRequired

         // 手指滑動的方向 （Up,Down,Left,Right）

         direction

          

         [plain]
         1. UISwipeGestureRecognizer *swipeGestureRecognizer = [[UISwipeGestureRecognizer alloc] init];
         2. [swipeGestureRecognizer addTarget:self action:@selector(gestureRecognizerHandle:)];
         3. [swipeGestureRecognizer setNumberOfTouchesRequired:2];
         4. [swipeGestureRecognizer setDirection:UISwipeGestureRecognizerDirectionRight];
         5. [self.view addGestureRecognizer:swipeGestureRecognizer];
         6. [swipeGestureRecognizer release];
            

            5.UIRotationGestureRecognizer (手指在屏幕上旋轉操作)

             

            // 旋轉方向，小於0為逆時針旋轉手勢，大於0為順時針手勢

            rotation

            // 旋轉速率

            velocity

             

             

            [plain]
            1. UIRotationGestureRecognizer *rotationGestureRecognizer = [[UIRotationGestureRecognizer alloc] init];
            2. [rotationGestureRecognizer addTarget:self action:@selector(gestureRecognizerHandle:)];
            3. [self.view addGestureRecognizer:rotationGestureRecognizer];
            4. [rotationGestureRecognizer release];
               

                

               6.UILongPressGestureRecognizer (長按手勢)

                

                

               // Default is 0. The number of full taps required before the press for gesture to be recognized

               numberOfTapsRequired

               // 需要長按的手指的個數

               numberOfTouchesRequired

               // 需要長按的時間，最小為0.5s

               minimumPressDuration

               // 手指按住允許移動的距離

               allowableMovement

               
               

                

               [plain]
               1. UILongPressGestureRecognizer *longPressGestureRecognizer = [[UILongPressGestureRecognizer alloc] init];
               2. [longPressGestureRecognizer addTarget:self action:@selector(gestureRecognizerHandle:)];
               3. [longPressGestureRecognizer setMinimumPressDuration:1.0f];
               4. [longPressGestureRecognizer setAllowableMovement:50.0];
               5. [self.view addGestureRecognizer:longPressGestureRecognizer];
               6. [longPressGestureRecognizer release];