添加四个方向的手势

1、为view添加手势首先定义一个手势对象

UISwipeGestureRecognizer * recognizer;

2、给view添加上四种手势的代码如下：

添加右滑手势：

recognizer = [[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(handleSwipeFrom:)]; [recognizer setDirection:(UISwipeGestureRecognizerDirectionRight)]; [self.view addGestureRecognizer:recognizer];

添加左滑手势：

recognizer = [[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(handleSwipeFrom:)];

[recognizer setDirection:(UISwipeGestureRecognizerDirectionLeft)];

[self.view addGestureRecognizer:recognizer];

添加上滑手势：

recognizer = [[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(handleSwipeFrom:)];

[recognizer setDirection:(UISwipeGestureRecognizerDirectionUp)];

[self.view addGestureRecognizer:recognizer];

添加下滑手势：

recognizer = [[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(handleSwipeFrom:)];

[recognizer setDirection:(UISwipeGestureRecognizerDirectionDown)];

[self.view addGestureRecognizer:recognizer];

添加手势的响应事件:

- (void)handleSwipeFrom:(UISwipeGestureRecognizer*)recognizer{

    if(recognizer.direction ==UISwipeGestureRecognizerDirectionDown) {

        NSLog(@"swipe down");

    }

    if(recognizer.direction ==UISwipeGestureRecognizerDirectionUp) {

        NSLog(@"swipe up");

    }

    if(recognizer.direction ==UISwipeGestureRecognizerDirectionLeft) {

        NSLog(@"swipe left");

    }

    if(recognizer.direction ==UISwipeGestureRecognizerDirectionRight) {

        NSLog(@"swipe right");

    }

}