手勢

H文件

@property (nonatomic, strong) UISwipeGestureRecognizer *leftSwipeGestureRecognizer;

@property (nonatomic, strong) UISwipeGestureRecognizer *rightSwipeGestureRecognizer;

M文件

   self.leftSwipeGestureRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipes:)];

    self.rightSwipeGestureRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipes:)];

    

    self.leftSwipeGestureRecognizer.direction = UISwipeGestureRecognizerDirectionLeft;

    self.rightSwipeGestureRecognizer.direction = UISwipeGestureRecognizerDirectionRight;

    

    [self.view addGestureRecognizer:self.leftSwipeGestureRecognizer];

    [self.view addGestureRecognizer:self.rightSwipeGestureRecognizer];

- (void)handleSwipes:(UISwipeGestureRecognizer *)sender {

    if (sender.direction == UISwipeGestureRecognizerDirectionLeft) {

        _quartz.backgroundColor = [UIColor whiteColor];

    }

    

    if (sender.direction == UISwipeGestureRecognizerDirectionRight) {

        _quartz.backgroundColor = [UIColor redColor];

    }

}