iOS开发中手势识别

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=[[UITapGestureRecognizeralloc]initWithTarget:selfaction:@selector(tapGesture:)];

tapGesture.numberOfTapsRequired=1;//点击次数

tapGesture.numberOfTouchesRequired=1;//点击手指数

[self.viewaddGestureRecognizer:tapGesture];

//轻击手势触发方法

-(void)tapGesture:(UITapGestureRecognizer*)sender

{

//yourcode

}

2，长按手势（LongPressGestureRecognizer）

UILongPressGestureRecognizer*longPressGesture=[[UILongPressGestureRecognizeralloc]initWithTarget:selfaction:@selector(longPressGesture:)];

//设置长按时间

longPressGesture.minimumPressDuration=0.5;

[self.viewaddGestureRecognizer:longPressGesture];

//长按手势触发方法

-(void)longPressGesture:(id)sender

{

UILongPressGestureRecognizer*longPress=sender;

if(longPress.state==UIGestureRecognizerStateBegan)

{

//yourcode

}

}

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=[[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(swipeGesture:)];

//设置轻扫的方向

swipeGesture.direction=UISwipeGestureRecognizerDirectionRight;//向右

[self.viewaddGestureRecognizer:swipeGesture];

UISwipeGestureRecognizer*swipeGestureLeft=[[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(swipeGesture:)];

//设置轻扫的方向

swipeGestureLeft.direction=UISwipeGestureRecognizerDirectionLeft;//向左

[self.viewaddGestureRecognizer: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=[[UIPinchGestureRecognizeralloc]initWithTarget:selfaction:@selector(pinchGesture:)];

[self.viewaddGestureRecognizer: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)

{

[UIViewanimateWithDuration:0.5animations:^{

_imageView.transform=CGAffineTransformIdentity;//取消一切形变

}];

}

}

5，拖动手势（PanGestureRecognizer）

UIPanGestureRecognizer*panGesture=[[UIPanGestureRecognizeralloc]initWithTarget:selfaction:@selector(panGesture:)];

[self.viewaddGestureRecognizer:panGesture];

//拖动手势触发方法

-(void)panGesture:(id)sender

{

UIPanGestureRecognizer*panGesture=sender;

CGPointmovePoint=[panGesturetranslationInView:self.view];

//yourcode

}

6，旋转手势（RotationGestureRecognizer）

UIRotationGestureRecognizer*rotationGesture=[[UIRotationGestureRecognizeralloc]initWithTarget:selfaction:@selector(rotationGesture:)];

[self.viewaddGestureRecognizer: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)

{

[UIViewanimateWithDuration:1animations:^{

_imageView.transform=CGAffineTransformIdentity;//取消形变

}];

}

}

相关资源：iOS开发之手势识别实例