IOS添加滑动手势

添加滑动手势有两种方法
方法一:

添加手势不分方向, 左 右 上 下滑动都会调用方法

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

- (void)removeSelfView:(UIPanGestureRecognizer *)gesture{    NSLog(@"滑动方法调用了");    [self removeFromSuperview];}

方法二:
添加可以区分方向的手势 特定滑动方向时  才会调用相应的操作

UISwipeGestureRecognizer *left = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipes:)];    left.direction=UISwipeGestureRecognizerDirectionLeft;    [self addGestureRecognizer:left];        UISwipeGestureRecognizer *right = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipes:)];    right.direction=UISwipeGestureRecognizerDirectionRight;    [self addGestureRecognizer:right];        UISwipeGestureRecognizer *up = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipes:)];    up.direction=UISwipeGestureRecognizerDirectionUp;    [self addGestureRecognizer:up];        UISwipeGestureRecognizer *down = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipes:)];    down.direction=UISwipeGestureRecognizerDirectionLeft;    [self addGestureRecognizer:down];

-(void)handleSwipes:(UISwipeGestureRecognizer *)recognizer{    if(recognizer.direction==UISwipeGestureRecognizerDirectionLeft){        NSLog(@"向左边滑动了!!!!!!");    }    if (recognizer.direction == UISwipeGestureRecognizerDirectionRight) {        NSLog(@"向右边滑动了!!!!!!");    }    if (recognizer.direction == UISwipeGestureRecognizerDirectionUp) {        NSLog(@"向上边滑动了!!!!!!");    }    if (recognizer.direction == UISwipeGestureRecognizerDirectionDown) {        NSLog(@"向下边滑动了!!!!!!");    }}

使用手势很简单，分为三步：
    1    创建手势识别器对象实例。创建时，指定一个回调方法，当手势开始，改变、或结束时，执行回调方法。
    2    设置手势识别器对象实例的相关属性（可选部分）
    3    添加到需要识别的 View 中。每个手势只对应一个 View，当屏幕触摸在 View 的边界内时，如果手势和预定的一样，那就会执行回调方法。
PS：一个手势只能对应一个 View，但是一个 View 可以有多个手势。建议在真机上测试这些手势，模拟器操作不太方便，可能导致认为手势失效的情况。（模拟器测试捏合和旋转手势时，按住 option 键，再用触摸板或鼠标操作）