ios4 - 滑动手势iPhone

Question

我在处理iPhone时遇到一些麻烦，我在界面中创建了UISwipeGestureRecognizer var:

UISwipeGestureRecognizer *swipeRecognizer;

并在我的 Controller 中:viewDidLoad方法

- (void)viewDidLoad
{
    [super viewDidLoad];


    // Horizontal swipe
    swipeRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self 
                                                                          action:@selector(swipeMethod:)];
    swipeRecognizer.direction = UISwipeGestureRecognizerDirectionRight | UISwipeGestureRecognizerDirectionLeft; 
    [self addGestureRecognizer:swipeRecognizer];
}

我处理滑动的方法是:

-(void)swipeMethod: (UISwipeGestureRecognizer *) sender
{
    NSLog(@"Swipe!");   
}

当我运行代码并滑动时，我什么也没得到？我应该得到:刷卡!

谢谢。

Answer 1

令我惊讶的是，它不会因无法识别的选择器错误而崩溃。尝试将识别器添加到 View 而不是 View Controller 中:

[self.view addGestureRecognizer:swipeRecognizer]