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IOS中的手势详解

1、点击

UITapGestureRecognizer *tap=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(click)];  //设置当前需要点击的次数  [tap setNumberOfTapsRequired:1];  //设置当前需要触发事件的手指数量 [tap setNumberOfTouchesRequired:2]; //设置当前代理 tap.delegate=self; [_view addGestureRecognizer:tap]; //触发方法 - (void) click{  NSLog(@"当前视图被点击了！ "); }

2、长按

UILongPressGestureRecognizer * longPress=[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress)]; //设置当前长按最小的时长 longPress.minimumPressDuration=2;  //设置允许的移动范围  [longPress setAllowableMovement:2]; [_view addGestureRecognizer:longPress]; //触发方法 - (void) longPress{     NSLog(@"长按事件触发！ "); }

3、轻扫

UISwipeGestureRecognizer * swip=[[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipMethod)];     //往左边方向   swip.direction=UISwipeGestureRecognizerDirectionLeft  ;     //往右边方向   swip.direction=UISwipeGestureRecognizerDirectionRight  ;     //往上面方向     swip.direction=UISwipeGestureRecognizerDirectionUp  ;     //往下面方向    swip.direction=UISwipeGestureRecognizerDirectionDown  ;     [_view addGestureRecognizer:swip];          //触发方法     - (void) swipMethod{         NSLog(@"轻扫事件触发！ "); }

如果涉及到2个以上方向的手势最好添加多个UISwipeGestureRecognizer 对象并设置不同的方向，不要通过下面方式用符号|来连接:

swip.direction=UISwipeGestureRecognizerDirectionLeft  | UISwipeGestureRecognizerDirectionRight

4、拖动

IOS中的手势详解

第一步：添加视图

_view=[[UIView alloc] initWithFrame:CGRectMake(50, 250, 300, 200)]; [_view setBackgroundColor:[UIColor redColor]]; [self.view addSubview:_view];

第二步：添加手势

UIPanGestureRecognizer *pan=[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(paned:)]; [_view addGestureRecognizer:pan];

第三步：实现方法

- (void) paned:(UIPanGestureRecognizer *) pan{  //获取移动的大小  CGPoint point= [pan translationInView:pan.view];  //更改视图的中心点坐标  CGPoint points=_view.center;  points.x+=point.x;  points.y+=point.y;  _view.center=points;  //每次都清空一下消除坐标叠加  [pan setTranslation:CGPointZero inView:pan.view]; }

5、旋转

IOS中的手势详解

第一步：添加视图

_view=[[UIView alloc] initWithFrame:CGRectMake(50, 250, 300, 200)]; [_view setBackgroundColor:[UIColor redColor]]; [self.view addSubview:_view];

第二步：添加手势

UIRotationGestureRecognizer * roate=[[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotate:)];     [_view addGestureRecognizer:roate]; roate.delegate=self;

第三步：实现方法

- (void) rotate:(UIRotationGestureRecognizer *) rote{    //获取当前旋转的度数    CGFloat rotation= rote.rotation;     //通过仿射变换实现旋转   _view.transform=CGAffineTransformRotate(_view.transform, rotation);     //防止旋转叠加需要清零     rote.rotation=0; }

6、捏合

IOS中的手势详解

第一步：添加视图

_view=[[UIView alloc] initWithFrame:CGRectMake(50, 250, 300, 200)]; [_view setBackgroundColor:[UIColor redColor]]; [self.view addSubview:_view];

第二步：添加手势

UIPinchGestureRecognizer * pich=[[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(piches:)]; [_view addGestureRecognizer:pich]; pich.delegate=self;

第三步：实现方法

- (void) piches:(UIPinchGestureRecognizer *) pich{  //获取比例  CGFloat scale=pich.scale;  //通过仿射变换实现缩放  _view.transform=CGAffineTransformScale(_view.transform, scale, scale);  //防止比例叠加需要置为1  pich.scale=1; }

【补充】如果需要同时响应多个手势需要重写代理方法

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{     return YES; }

正文到此结束