1.轻击手势（TapGestureRecognizer）的添加
初始化代码TapGestureRecongnizer的代码如下：
//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];
在回调方法中添加相应的业务逻辑：
//轻击手势触发方法
-(void)tapGesture: (id)sender
{ //轻击后要做的事情
}
2.长按手势（LongPressGestureRecognizer）
初始化代码
//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];
在对应的回调方法中添加相应的方法（当手势开始时执行）：
//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];
}
}
代码说明：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）
在初始化轻扫手势的时候得指定轻扫的方向，上下左右。 如果要要添加多个轻扫方向，就得添加多个轻扫手势，不过回调的是同一个方法。
添加轻扫手势，一个向左一个向右，代码如下：
1 //添加轻扫手势
2 UISwipeGestureRecognizer *swipeGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGesture:)];
3 //设置轻扫的方向
4 swipeGesture.direction = UISwipeGestureRecognizerDirectionRight; //默认向右
5 [self.view addGestureRecognizer:swipeGesture];
7 //添加轻扫手势
8 UISwipeGestureRecognizer *swipeGestureLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGesture:)];
9 //设置轻扫的方向
10 swipeGestureLeft.direction = UISwipeGestureRecognizerDirectionLeft; //默认向右
11 [self.view addGestureRecognizer:swipeGestureLeft];
回调方法如下：
//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
}
}
4.捏合手势（PinchGestureRecognizer）
捏合手势初始化
//添加捏合手势
2 UIPinchGestureRecognizer *pinchGesture = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchGesture:)];
3 [self.view addGestureRecognizer:pinchGesture];
捏合手势要触发的方法（放大或者缩小图片）：
////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）
拖动手势的初始化
//添加拖动手势
UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGesture:)];
[self.view addGestureRecognizer:panGesture];
拖动手势要做的方法（通过translationInView获取移动的点，和TouchesMoved方法类似）
//拖动手势
-(void) panGesture:(id)sender
{
UIPanGestureRecognizer *panGesture = sender;
CGPoint movePoint = [panGesture translationInView:self.view];
//做你想做的事儿
}
6.旋转手势（RotationGestureRecognizer）
旋转手势的初始化
//添加旋转手势
UIRotationGestureRecognizer *rotationGesture = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotationGesture:)];
[self.view addGestureRecognizer:rotationGesture];
旋转手势调用的方法：
1 //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
}];
}
}
