iOS开发中六种手势识别

iOS开发中手势识别有六种：

轻击手势（TapGestureRecognizer）,

轻扫手势 （SwipeGestureRecognizer）,

长按手势（LongPressGestureRecognizer）,

拖动手势（PanGestureRecognizer）,

捏合手势（PinchGestureRecognizer）,

旋转手势（RotationGestureRecognizer）,

1，轻击手势（TapGestureRecognizer）

UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGesture:)];  tapGesture.numberOfTapsRequired = 1; //点击次数  tapGesture.numberOfTouchesRequired = 1; //点击手指数  [self.view addGestureRecognizer:tapGesture];    //轻击手势触发方法  -(void)tapGesture:(UITapGestureRecognizer *)sender  {      //your code  }

2，长按手势（LongPressGestureRecognizer）

UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressGesture:)];  //设置长按时间  longPressGesture.minimumPressDuration = 0.5;  [self.view addGestureRecognizer:longPressGesture];  //长按手势触发方法  -(void)longPressGesture:(id)sender  {    UILongPressGestureRecognizer *longPress = sender;    if (longPress.state == UIGestureRecognizerStateBegan)    {     //your code    }  }  说明：长按手势的常用状态如下  开始：UIGestureRecognizerStateBegan  改变：UIGestureRecognizerStateChanged  结束：UIGestureRecognizerStateEnded  取消：UIGestureRecognizerStateCancelled  失败：UIGestureRecognizerStateFailed

3，轻扫手势（SwipeGestureRecognizer）

UISwipeGestureRecognizer *swipeGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGesture:)];  //设置轻扫的方向  swipeGesture.direction = UISwipeGestureRecognizerDirectionRight; //向右  [self.view addGestureRecognizer:swipeGesture];  UISwipeGestureRecognizer *swipeGestureLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGesture:)];  //设置轻扫的方向  swipeGestureLeft.direction = UISwipeGestureRecognizerDirectionLeft; //向左  [self.view addGestureRecognizer:swipeGestureLeft];  //轻扫手势触发方法  -(void)swipeGesture:(id)sender  {   UISwipeGestureRecognizer *swipe = sender;   if (swipe.direction == UISwipeGestureRecognizerDirectionLeft)   {    //向左轻扫   }   if (swipe.direction == UISwipeGestureRecognizerDirectionRight)   {    //向右轻扫   }  }

4，捏合手势（PinchGestureRecognizer）

UIPinchGestureRecognizer *pinchGesture = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchGesture:)];  [self.view addGestureRecognizer:pinchGesture];   ////捏合手势触发方法  -(void) pinchGesture:(id)sender  {   UIPinchGestureRecognizer *gesture = sender;   //手势改变时   if (gesture.state == UIGestureRecognizerStateChanged)   {     //捏合手势中scale属性记录的缩放比例    _imageView.transform = CGAffineTransformMakeScale(gesture.scale, gesture.scale);   }   //结束后恢复   if(gesture.state==UIGestureRecognizerStateEnded)   {    [UIView animateWithDuration:0.5 animations:^{     _imageView.transform = CGAffineTransformIdentity;//取消一切形变    }];   }  }

5，拖动手势（PanGestureRecognizer）

UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGesture:)];  [self.view addGestureRecognizer:panGesture];    //拖动手势触发方法  -(void) panGesture:(id)sender  {      UIPanGestureRecognizer *panGesture = sender;      CGPoint movePoint = [panGesture translationInView:self.view];      //your code  }

6，旋转手势（RotationGestureRecognizer）

UIRotationGestureRecognizer *rotationGesture = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotationGesture:)];  [self.view addGestureRecognizer:rotationGesture];  //旋转手势触发方法  -(void)rotationGesture:(id)sender  {   UIRotationGestureRecognizer *gesture = sender;   if (gesture.state==UIGestureRecognizerStateChanged)   {    _imageView.transform=CGAffineTransformMakeRotation(gesture.rotation);   }   if(gesture.state==UIGestureRecognizerStateEnded)   {    [UIView animateWithDuration:1 animations:^{     _imageView.transform=CGAffineTransformIdentity;//取消形变    }];   }  }

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