开发ios应用时我们经常用到多手势来处理事情，如给scrollView增加点击事件，scrollView不能响应view的touch事件,但有时候却要用到多手势事件，那么我们可以给这个scrollView增加自己的手指事件。给imageView增加点击、放大、旋转等都可以通过多手势来完成。 下面就介绍下各种的手势的使用方法，及注意事项。 - (void)viewDidLoad { [super viewDidLoad]; //为了能响应多手势事件，imageView的userInteractionEnabled属性要设为YES. self.imageView.userInteractionEnabled=YES; //1、手指点击事件 //单指单击 UITapGestureRecognizer *singleFingerOne = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(fingerIncident:)]; //手指数 singleFingerOne.numberOfTouchesRequired = 1; //点击次数 singleFingerOne.numberOfTapsRequired = 1; //设置代理方法 singleFingerOne.delegate= self; //增加事件者响应者， [self.imageView addGestureRecognizer:singleFingerOne]; //单指双击 UITapGestureRecognizer *singleFingerTwo = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(fingerIncident:)]; singleFingerTwo.numberOfTouchesRequired = 1; singleFingerTwo.numberOfTapsRequired = 2; singleFingerTwo.delegate= self; [self.imageView addGestureRecognizer:singleFingerTwo]; //双指单击 UITapGestureRecognizer *doubleFingerOne = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(fingerIncident:)]; doubleFingerOne.numberOfTouchesRequired = 2; doubleFingerOne.numberOfTapsRequired = 1; doubleFingerOne.delegate= self; [self.imageView addGestureRecognizer:doubleFingerOne]; //双指双击 UITapGestureRecognizer *doubleFingerTwo = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(fingerIncident:)]; doubleFingerTwo.numberOfTouchesRequired = 2; doubleFingerTwo.numberOfTapsRequired = 2; doubleFingerTwo.delegate= self; [self.imageView addGestureRecognizer:doubleFingerTwo]; //如果不加下面的话，当单指双击时，会先调用单指单击中的处理，再调用单指双击中的处理 [singleFingerOne requireGestureRecognizerToFail:singleFingerTwo]; //同理双指也是如此 [doubleFingerOne requireGestureRecognizerToFail:doubleFingerTwo]; //2、手势为捏的姿势:按住option按钮配合鼠标来做这个动作在虚拟器上 UIPinchGestureRecognizer *pinchGesture=[[UIPinchGestureRecognizer alloc]initWithTarget:self action:@selector(handlePinchGesture:)]; [self.imageView addGestureRecognizer:pinchGesture];//imageView添加手势识别 [pinchGesture release]; //3、旋转手势:按住option按钮配合鼠标来做这个动作在虚拟器上 UIRotationGestureRecognizer *rotateGesture=[[UIRotationGestureRecognizer alloc]initWithTarget:self action:@selector(handleRotateGesture:)]; [self.imageView addGestureRecognizer:rotateGesture]; [rotateGesture release]; //4、拖手势 UIPanGestureRecognizer *panGesture=[[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(handlePanGesture:)]; [self.imageView addGestureRecognizer:panGesture]; [panGesture release]; //当实现上面拖手势（UIPanGestureRecognizer）后将不能响应下面的左右划（UISwipeGestureRecognizer）事件，事件会被拖手势栏截，所以左右划和拖手势只能选其一 //右划 UISwipeGestureRecognizer *swipeGesture=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeGesture:)]; [self.imageView addGestureRecognizer:swipeGesture]; [swipeGesture release]; //左划 UISwipeGestureRecognizer *swipeLeftGesture=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeGesture:)]; swipeGesture.direction=UISwipeGestureRecognizerDirectionLeft;//不设置黑夜是右 [self.imageView addGestureRecognizer:swipeLeftGesture]; [swipeLeftGesture release]; UILongPressGestureRecognizer *longpressGesutre=[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(handleLongpressGesture:)]; //长按时间为1秒 longpressGesutre.minimumPressDuration=0.5; //允许15秒中运动 longpressGesutre.allowableMovement=3; //所需触摸1次 longpressGesutre.numberOfTouchesRequired=1; [self.imageView addGestureRecognizer:longpressGesutre]; [longpressGesutre release]; } //手指点击事件 - (void)fingerIncident:(UITapGestureRecognizer *)sender { if (sender.numberOfTouchesRequired==1) { //单指点击事件 if(sender.numberOfTapsRequired == 1) { //单指单击 NSLog(@"单指单击"); [sender.view.layer removeAllAnimations]; } else if(sender.numberOfTapsRequired ==2 ){ //单指双击 NSLog(@"单指双击"); } } else if (sender.numberOfTouchesRequired==2) { //双指点击事件 if(sender.numberOfTapsRequired == 1) { //双指单击 NSLog(@"双指单击"); } else if(sender.numberOfTapsRequired ==2 ){ //双指双击 NSLog(@"双指双击"); } } } //手指左右滑动事件 -(void)handleSwipeGesture:(UISwipeGestureRecognizer *)sender{ if (sender.direction==UISwipeGestureRecognizerDirectionLeft) { NSLog(@"左滑"); } else{ NSLog(@"右滑"); } } //手指捏事件 -(void)handlePinchGesture:(UIPinchGestureRecognizer *)sender{ NSLog(@"捏"); if([sender state] == UIGestureRecognizerStateEnded) { lastScale = 1.0; return; } CGFloat scale = 1.0 - (lastScale - [(UIPinchGestureRecognizer*)sender scale]); CGAffineTransform newTransform = CGAffineTransformScale(sender.view.transform, scale, scale); [sender.view setTransform:newTransform]; lastScale = [sender scale]; } //手指旋转事件 -(void)handleRotateGesture:(UIRotationGestureRecognizer *)sender{ NSLog(@"旋转"); NSLog(@"sender.scale=%f",sender.rotation); NSLog(@"sender.velocity=%f",sender.velocity); sender.view.transform=CGAffineTransformRotate(sender.view.transform, sender.rotation); sender.rotation=0; } //手指拖事件 -(void)handlePanGesture:(UIPanGestureRecognizer *)sender{ NSLog(@"拖"); NSLog(@"sender＝%@",sender); CGPoint translation=[(UIPanGestureRecognizer*)sender translationInView:self.view]; //开始 if (sender.state==UIGestureRecognizerStateBegan) { x=sender.view.center.x; y=sender.view.center.y; } //进行中 if (sender.state==UIGestureRecognizerStateChanged) { sender.view.center=CGPointMake(x+translation.x, y+translation.y); } //结束 if (sender.state==UIGestureRecognizerStateEnded) { sender.view.center=CGPointMake(x+translation.x, y+translation.y); } } //手指长按事件 -(void)handleLongpressGesture:(UILongPressGestureRecognizer *)sender{ NSLog(@"长按"); if (sender.state==UIGestureRecognizerStateBegan) { CABasicAnimation* rotationAnimation_ = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"]; //角度转弧度 rotationAnimation_.fromValue = [NSNumber numberWithFloat:(-0.02)]; rotationAnimation_.toValue = [NSNumber numberWithFloat:(0.02)]; //动画时间 rotationAnimation_.duration = 0.1f; //动画次数 rotationAnimation_.repeatCount=FLT_MAX; //回退动画 rotationAnimation_.autoreverses = YES; //动画开始结束的快慢，设置为加速 rotationAnimation_.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]; [[sender.view layer] addAnimation:rotationAnimation_ forKey:@"revItUpAnimation"]; } }