iOS开发之手势识别实例

//新建tap手势
 UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGesture:)];
 //设置点击次数和点击手指数
 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:(id)sender
{
 //轻击后要做的事情  
}

//添加长摁手势
 UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressGesture:)];
 //设置长按时间
 longPressGesture.minimumPressDuration = 0.5; //(2秒)
 [self.view addGestureRecognizer:longPressGesture];

//常摁手势触发方法
-(void)longPressGesture:(id)sender
{
 UILongPressGestureRecognizer *longPress = sender;
 if (longPress.state == UIGestureRecognizerStateBegan)
 {
  UIAlertView *alter = [[UIAlertView alloc] initWithTitle:@"提示" message:@"长按触发" delegate:nil cancelButtonTitle:@"取消" otherButtonTitles: nil];
  [alter show];
 }
}

//添加轻扫手势
 UISwipeGestureRecognizer *swipeGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGesture:)];
 //设置轻扫的方向
 swipeGesture.direction = UISwipeGestureRecognizerDirectionRight; //默认向右
 [self.view addGestureRecognizer:swipeGesture];
  
 //添加轻扫手势
 UISwipeGestureRecognizer *swipeGestureLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGesture:)];
 //设置轻扫的方向
 swipeGestureLeft.direction = UISwipeGestureRecognizerDirectionLeft; //默认向右
 [self.view addGestureRecognizer:swipeGestureLeft];

//轻扫手势触发方法
-(void)swipeGesture:(id)sender
{
 UISwipeGestureRecognizer *swipe = sender;
 if (swipe.direction == UISwipeGestureRecognizerDirectionLeft)
 {
  //向左轻扫做的事情
 }
 if (swipe.direction == UISwipeGestureRecognizerDirectionRight)
 {
  //向右轻扫做的事情
 }
}

//添加捏合手势
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
  }];
 }
}

//添加拖动手势
UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGesture:)];
[self.view addGestureRecognizer:panGesture];

//拖动手势
-(void) panGesture:(id)sender
{
 UIPanGestureRecognizer *panGesture = sender;
  
 CGPoint movePoint = [panGesture translationInView:self.view];
  
 //做你想做的事儿
}

//添加旋转手势
UIRotationGestureRecognizer *rotationGesture = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotationGesture:)];
[self.view addGestureRecognizer:rotationGesture];

//旋转手势
-(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
  }];
 }
  
}