UIGestureRecognizer阻塞表视图滚动

问题描述

我使用自定义 UIGestureRecognizer 子类来跟踪我的 InfoView 类上的手势。 InfoView 类是一个定制 UITableViewCell 子类的子视图 InfoCell 。

我已经将我的手势识别器添加到我的根视图（屏幕上其他一切的父视图，因为我的自定义手势识别器的目的是允许拖动 InfoCell 表之间的视图）。现在，一切都工作，因为它应该，除了一件事。我在 UIGestureRecognizer 子类中使用以下代码来检测 InfoView 视图上的触摸：

   - （void）touchesBegan：（NSSet *）touches withEvent：（UIEvent *）event {
 UIView * touchView = [[touches anyObject ] view]; 
 if（[touchView isKindOfClass：[InfoView class]]）{
 // Do stuff 
} 
  

这里的问题是 InfoView 对象的触摸被拦截，因此它们不会被转发到其中包含 InfoCell 的，它是 InfoView 的父视图。这意味着我不能再通过拖动 InfoView 视图来滚动表视图，这是一个问题，因为 InfoView 覆盖整个 InfoCell 。

有什么方法可以将触摸转移到表视图，可以滚动？我已经尝试了一堆事情：

[super touchesBegan：touches withEvent：event]; p>

[touchView.superview.superview touchesBegan：touches withEvent：event]; （ touchView.superview .superview 获得对其父项的引用 UITableView ）

远。此外，我的 UIGestureRecognizer 的 cancelsTouchesInView 属性设置为 NO ，以便不干扰触摸。

帮助感谢。感谢！

解决方案

我在 touchesBegan 姿势识别器的状态属性为 UIGestureRecognizerStateBegan 。删除此行似乎可以解决问题。

I'm using a custom UIGestureRecognizer subclass to track gestures on my InfoView class. The InfoView class is a subview of a custom UITableViewCell subclass called InfoCell.

I've added my gesture recognizer to my root view (the parent view of everything else on screen, because the purpose of my custom gesture recognizer is to allow dragging of InfoCell views between tables). Now, everything works as it should except one thing. I'm using the following code in my UIGestureRecognizer subclass to detect touches on the InfoView view:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    UIView *touchView = [[touches anyObject] view];
    if ([touchView isKindOfClass:[InfoView class]]) {
        // Do stuff
    }

The problem here is that the touches on the InfoView object are being intercepted, therefore they are not being forwarded to the UITableView which contains the InfoCell, which is the parent view of the InfoView. This means that I can no longer scroll the table view by dragging on the InfoView view, which is an issue because the InfoView covers the entire InfoCell.

Is there any way I can forward the touches onto the table view so that it can scroll? I've tried a bunch of things already:

[super touchesBegan:touches withEvent:event];

[touchView.superview.superview touchesBegan:touches withEvent:event]; (touchView.superview.superview gets a reference to its parent UITableView)

But nothing has worked so far. Also, the cancelsTouchesInView propery of my UIGestureRecognizer is set to NO, so thats not interfering with the touches.

Help is appreciated. Thanks!

解决方案

I had a line in my touchesBegan method that set the state property of the gesture recognizer to UIGestureRecognizerStateBegan. Removing this line seems to fix the problem.

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