滑动手势 iPhone
我在处理 iPhone 上的滑动时遇到一些麻烦，我在界面中创建了 UISwipeGestureRecognizer var:
UISwipeGestureRecognizer *swipeRecognizer;
并在控制器中创建了 viewDidLoad 方法
- (void)viewDidLoad
{
[super viewDidLoad];
// Horizontal swipe
swipeRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self
action:@selector(swipeMethod:)];
swipeRecognizer.direction = UISwipeGestureRecognizerDirectionRight | UISwipeGestureRecognizerDirectionLeft;
[self addGestureRecognizer:swipeRecognizer];
}
和我的方法处理滑动的方法是：
-(void)swipeMethod: (UISwipeGestureRecognizer *) sender
{
NSLog(@"Swipe!");
}
当我运行代码并进行滑动时，我什么也没有得到？我应该得到：刷卡！
谢谢。
I have some trouble to handle swipe on iPhone, I create in my interface a UISwipeGestureRecognizervar:
UISwipeGestureRecognizer *swipeRecognizer;
and in my controller : viewDidLoad method
- (void)viewDidLoad
{
[super viewDidLoad];
// Horizontal swipe
swipeRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self
action:@selector(swipeMethod:)];
swipeRecognizer.direction = UISwipeGestureRecognizerDirectionRight | UISwipeGestureRecognizerDirectionLeft;
[self addGestureRecognizer:swipeRecognizer];
}
And my method to handle swipe is :
-(void)swipeMethod: (UISwipeGestureRecognizer *) sender
{
NSLog(@"Swipe!");
}
When I run my code and do a swipe I got nothing? I'm supposed to get : Swipe!
Thanks.
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评论（2）
我很惊讶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您的视图而不是视图控制器：
I'm surprised that doesn't crash with an unrecognized selector error. Try adding the recognizer to your view instead of to your view controller:
swipeRecognizer.direction = UISwipeGestureRecognizerDirectionRight | UISwipeGestureRecognizerDirectionLeft；
这有效吗？
不是要为每个方向添加两个gestureRecognizer吗？
swipeRecognizer.direction = UISwipeGestureRecognizerDirectionRight | UISwipeGestureRecognizerDirectionLeft;
Does this work?
Don't you have to add two gestureRecognizer for each direction?