Summary of gesture recognition for iOS development

There are six types of gesture recognition in iOS development:

Tap gestures (Tapgesturerecognizer),

Swipe gesture (Swipegesturerecognizer),

Long-press gesture (Longpressgesturerecognizer),

Drag gestures (Pangesturerecognizer),

Pinch gesture (Pinchgesturerecognizer),

Rotation gesture (Rotationgesturerecognizer),

1, tap gesture (Tapgesturerecognizer)

UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGesture:)];tapGesture.numberOfTapsRequired = 1; //点击次数tapGesture.numberOfTouchesRequired = 1; //点击手指数[self.view addGestureRecognizer:tapGesture];//轻击手势触发方法-(void)tapGesture:(UITapGestureRecognizer *)sender{    //your code}

2, long press gesture (Longpressgesturerecognizer)

UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressGesture:)];//设置长按时间longPressGesture.minimumPressDuration = 0.5;[self.view addGestureRecognizer:longPressGesture];//长按手势触发方法-(void)longPressGesture:(id)sender{    UILongPressGestureRecognizer *longPress = sender;    if (longPress.state == UIGestureRecognizerStateBegan)    {       //your code    }}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, swipe gesture (Swipegesturerecognizer)

UISwipeGestureRecognizer *swipeGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGesture:)];//设置轻扫的方向swipeGesture.direction = UISwipeGestureRecognizerDirectionRight; //向右[self.view addGestureRecognizer:swipeGesture];UISwipeGestureRecognizer *swipeGestureLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGesture:)];//设置轻扫的方向swipeGestureLeft.direction = UISwipeGestureRecognizerDirectionLeft; //向左[self.view addGestureRecognizer: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, pinch gesture (pinchgesturerecognizer)

UIPinchGestureRecognizer *pinchGesture = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchGesture:)];[self.view addGestureRecognizer: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)    {        [UIView animateWithDuration:0.5 animations:^{            _imageView.transform = CGAffineTransformIdentity;//取消一切形变        }];    }}

5, drag gesture (Pangesturerecognizer)

UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGesture:)];[self.view addGestureRecognizer:panGesture];//拖动手势触发方法-(void) panGesture:(id)sender{    UIPanGestureRecognizer *panGesture = sender;    CGPoint movePoint = [panGesture translationInView:self.view];    //your code}

6, rotation gesture (Rotationgesturerecognizer)

UIRotationGestureRecognizer *rotationGesture = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotationGesture:)];[self.view addGestureRecognizer: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)    {        [UIView animateWithDuration:1 animations:^{            _imageView.transform=CGAffineTransformIdentity;//取消形变        }];    }}

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Posted by Li gang Jan-th , 10:40 am iOS development

The source of this article just online: http://www.superqq.com/blog/2015/01/14/ioskai-fa-zhi-shou-shi-shi-bie-hui-zong/

Summary of gesture recognition for iOS development