ui中各种手势的用法

- (void)viewDidLoad {

    [superviewDidLoad];

    // Do any additional setup after loading the view.

    self.view.backgroundColor = [UIColorwhiteColor];

    UIImageView *image = [[UIImageViewalloc]initWithFrame:[UIScreenmainScreen].bounds];

    image.backgroundColor = [UIColorblackColor];

    image.image = [UIImageimageNamed:@"4444.jpg"];

    image.contentMode =UIViewContentModeScaleAspectFit;

    [self.viewaddSubview:image];

    [imagerelease];

//  1. 点击（tap）

    UITapGestureRecognizer *tap = [[UITapGestureRecognizeralloc] initWithTarget:selfaction:@selector(tapClick:)];

//    执行方法需要点击的次数

    tap.numberOfTapsRequired =2;

//    执行方法需要的触点

    tap.numberOfTouchesRequired =1;

    [image addGestureRecognizer:tap];

    image.userInteractionEnabled =YES;

    [taprelease];

//    2.长按

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

//    默认 0。5 --长按的时间

    l.minimumPressDuration =3;

//长按可以移动的距离

    l.allowableMovement =100;

    [image addGestureRecognizer:l];

    [lrelease];

//    3.旋转

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

//    

    rotation.rotation =111;

//    

    

    [imageaddGestureRecognizer:rotation];

    [rotationrelease];

//    4.捏合

    UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizeralloc]initWithTarget:selfaction:@selector(pinch:)];

   

    [image addGestureRecognizer:pinch];

    [pinchrelease];

//    5.平移

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

//    

    

    [image addGestureRecognizer:pan];

    [panrelease];

//    6.轻扫手势

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

    

    

    [image addGestureRecognizer:swipe];

    [swiperelease];

//    7.屏幕边缘手势

    UIScreenEdgePanGestureRecognizer *screen = [[UIScreenEdgePanGestureRecognizeralloc]initWithTarget:selfaction:@selector(screen:)];

    

    

    

    

    [imageaddGestureRecognizer:screen];

    [screenrelease];

}

- (void)screen:(UIScreenEdgePanGestureRecognizer *)se {

   NSLog(@"屏幕边缘");

}

- (void)swipe:(UISwipeGestureRecognizer *)s {

   NSLog(@"轻扫");

}

- (void)pan:(UIPanGestureRecognizer *)p {

   NSLog(@"平移");

//    获取视图

   UIView *imageV = p.view;

   CGPoint point = [p translationInView:imageV];

    imageV.transform =CGAffineTransformTranslate(imageV.transform, point.x, point.y);

    [p setTranslation:CGPointZeroinView:imageV];

    

}

- (void)pinch:(UIPinchGestureRecognizer *)p {

   NSLog(@"捏合");

    

//    很重要的一个属性scale，会被捕获到缩放的倍数

//    参数一：原来的transform

//    参数二：水平方向缩放的倍数

//    参数三：垂直方向缩放的倍数

//    CGAffineTansform 仿射变换矩阵（矩阵中放置view的缩放倍数，旋转角度，x,y坐标等参数）

//    获取手势所在的view

   UIView *imageV = p.view;

//    将x,y方向的缩放倍数传给transform

    p.view.transform =CGAffineTransformScale(p.view.transform, p.scale, p.scale);

//    会被多次调用这个方法，所以每次都要重置缩放倍数为原始倍数

    p.scale =1.0f;

}

- (void)rotation:(UIRotationGestureRecognizer *)r {

   NSLog(@"旋转");

//    改变矩阵的角度参数

    r.view.transform =CGAffineTransformRotate(r.view.transform, r.rotation);

//    重置角度，因为在这个方法在旋转时会时时被调用

    r.rotation =0.0f;

}

- (void)longp:(UILongPressGestureRecognizer *)l {

   NSLog(@"长按");

}

- (void)tapClick:(UITapGestureRecognizer *)tap {

   NSLog(@"点击手势");

}

//    设置同时可以有两个手势同时识别

//    基本上是同时识别两个,默认为NO

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer

shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {

    return YES;

}