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
}];
}
}
