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UI手势识别器

UI手势识别器

作者: 画个完美句号 | 来源:发表于2016-02-19 16:53 被阅读29次

       //七中手势:轻拍(tap) 长按(longPress) 旋转(rotation) 捏合(pinch) 拖拽(pan)

                // 轻扫(swipe) 屏幕边缘拖拽(screEdgePan)

       //添加图片

       UIImageView *imgView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 200, 200)];

       imgView.center = self.view.center;

       imgView.image = [UIImage imageNamed:@""];

       [self.view addSubview:imgView];

       [imgView release];

       //打开用户交互

       imgView.userInteractionEnabled = YES;

    //一 轻拍(tap)

       //获取到轻拍手势时,让self调用tapAction:方法

       UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapAction:)];

       //添加手势

       [imgView addGestureRecognizer:tap];

       //内存管理

       [tap release];

       //点击次数

       tap.numberOfTapsRequired = 2;

       //手指个数

       tap.numberOfTouchesRequired = 1;

    //二 长按(longPress)

       UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPressAction::)];

       [imgView addGestureRecognizer:longPress];

       [longPress release];

       //长按时间

       longPress.minimumPressDuration = 0.2;

    //三 旋转(rotation)

       UIRotationGestureRecognizer *rotation = [[UIRotationGestureRecognizer alloc]initWithTarget:self action:@selector(rotationAction:)];

       [imgView addGestureRecognizer:rotation];

       [rotation release];

    //四 捏合(pinch)

       UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizer alloc]initWithTarget:self action:@selector(pinchAciton:)];

       [imgView addGestureRecognizer:pinch];

       [pinch release];

    //五 轻扫(swipe)

       UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(swipeAction:)];

       //默认只识别向右

       //设置方向时 最多只能设置 水平(左/右)或者垂直(上/下)

       swipe.direction = UISwipeGestureRecognizerDirectionLeft |UISwipeGestureRecognizerDirectionRight |UISwipeGestureRecognizerDirectionDown |UISwipeGestureRecognizerDirectionUp;

       [imgView addGestureRecognizer:swipe];

       [swipe release];

    //六 pan(拖拽)

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

       [imgView addGestureRecognizer:pan];

       [pan release];

    //七 屏幕边缘拖拽(sreenEdgePan)

       UIScreenEdgePanGestureRecognizer *sep = [[UIScreenEdgePanGestureRecognizer alloc]initWithTarget:self action:@selector(sepAction:)];

       //需要设置拖拽的边缘

       sep.edges = UIRectEdgeLeft;

       //一般这个手势添加在VC的view上

       [self.view addGestureRecognizer:sep];

       [sep release];

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