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");
}}
