TouchesBegan 在子视图控制器上没有被调用
我有一个 ViewController 可以响应一些 touchEvents（touchesBegan、touchesMoved 等）。
我发现，当我使用presentModalViewController显示此控制器时：它工作得很好，但我试图将其视图添加为另一个ParentViewController的子视图，如下所示：
- (void)viewDidLoad
{
[super viewDidLoad];
//Add SubController
controller = [[SubViewController alloc] initWithNibName:@"SubViewController" bundle:nil];
controller.view.frame = CGRectMake(0, 30, 300, 130);
[view addSubview:controller.view];
[controller release];
}
当我这样做时，它会添加父视图，但它没有对触摸事件的响应时间更长。有办法解决这个问题吗？
另外，有没有更好的方法来解决这个问题？我知道我可能可以为子视图使用 View 子类，但它应该使用 Nib，并且我不确定如何在不使用 ViewController 的情况下处理它。
I have a ViewController that responds to some touchEvents (touchesBegan, touchesMoved, etc...).
I've found that when I show this controller using presentModalViewController: it works just fine, but I'm trying to add it's View as a subview of another ParentViewController like so:
- (void)viewDidLoad
{
[super viewDidLoad];
//Add SubController
controller = [[SubViewController alloc] initWithNibName:@"SubViewController" bundle:nil];
controller.view.frame = CGRectMake(0, 30, 300, 130);
[view addSubview:controller.view];
[controller release];
}
When I do this, it gets added the parent view but it no longer responds to touch events. Is there a way to fix this?
Also, is there a better way to go about this? I know I probably could have used a View subclass for the child view, but it's supposed to use a Nib and I wasn't sure how to handle that without using a ViewController.
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评论（3）
你是对的，你应该使用 UIView 子类。
从笔尖加载它的最简单方法是将子视图包含在笔尖中。
只需将 UIView 放入连接到原始视图控制器的视图中即可。
然后选择内部视图后，转到身份检查器。它看起来像一张小身份证。
第一个字段称为自定义类。
在此处键入您的 UIView 子类 的名称。
如果您需要对此的引用，只需在原始视图控制器中创建一个 IBOutlet 并将其连接起来。这样你就可以设置
hidden = YES直到你需要它为止。在你的 UIView 子类中，你可能想要重写
- (void)awakeFromNib当笔尖第一次打开包装时，这将被调用。
用于设置任何手势识别器等。
You're correct you should use a UIView subclass.
The easiest way to load it from a nib is to include the subview in your nib.
Just drop a UIView into the view connected to the original view controller.
Then with the view inside selected go to the identity inspector. It's the one that looks like a little ID card.
The very first field is called Custom Class.
Type the name of your UIView subclass here.
If you need a reference to this just create an IBOutlet in your original view controller and hook it up. That way you can set
hidden = YESuntil you need it.In your UIView subclass you might want to override
- (void)awakeFromNibThis will get called when the nib first unpacks.
for setting up any gesture recognizers, etc.
要将笔尖直接加载到视图中：
To load a nib directly into a view :
您可以尝试在子视图中调用
becomeFirstResponder并查看它是否接收到touchesBegan...可能是这样，但也可能使超级视图接收不到touchesBegan如果你需要的话...You could try to call
becomeFirstResponderin your subview and see whether it receivestouchesBegan... It is probably so, but it will also possibly make the superview not receivetouchesBeganif you require it...