显示并关闭模态视图控制器 UIImagePickerController 之后，我的 Cocos2d iPhone 应用程序不再看到多次触摸

我有一个应用程序，我在其中显示照片选择器（UIImagePickerController），但在用户关闭后，只有单次触摸才起作用。我想我知道问题的根源，但我不知道如何解决它......在显示模式对话框之前，触摸期间的堆栈如下所示：

...
#3  0x00074de0 in -[EAGLView touchesBegan:withEvent:] at EAGLView.m:289
#4  0x30910f33 in -[UIWindow _sendTouchesForEvent:]
...
  

但是在显示然后删除模式对话框之后，堆栈有这两个神秘的forwardMethod2调用：

...
#3  0x00074de0 in -[EAGLView touchesBegan:withEvent:] at EAGLView.m:289
#4  0x3098dc95 in forwardMethod2
#5  0x3098dc95 in forwardMethod2
#6  0x30910f33 in -[UIWindow _sendTouchesForEvent:]
...
  

这是我用来显示和删除 UIImagePickerController 的代码： 笔记： 1. pickerViewController是该类的成员，扩展了UIViewController） 2.Director来自Cocos2D，只包含一个直接附加在根窗口中的视图，称为openGLView，这就是为什么我制作了一个UIViewController来容纳我的图像选择器。

-(void)choosePhoto: (id)sender{
    UIImagePickerController *imagePickerController = pickerViewController.imagePickerController;
    imagePickerController.delegate = self;
    imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    imagePickerController.allowsImageEditing = YES;

    UIView *theView = [[Director sharedDirector] openGLView];
    UIView *pickerViewControllerView = pickerViewController.view;
    [theView addSubview:pickerViewControllerView];
    [pickerViewController presentModalViewController:imagePickerController animated:YES];
}

以及关闭对话框的代码：

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)imagePickerController
{
    // Dismiss the image selection
    [pickerViewController dismissModalViewControllerAnimated:YES];
    [pickerViewController.view removeFromSuperview];

    // HERE... IS THERE MORE WORK TO BE DONE TO COMPLETELY REMOVE THE PICKER VIEW????
}

在清理选择器视图时一定缺少一些东西......非常感谢帮助:)

从根窗口向下调查视图层次结构后，我发现在关闭照片选择器后，我的 viewController 的视图被添加为 UITransitionView 下的子视图，因此解决方案是删除 viewController 的视图的超级视图：

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)imagePickerController
{
    // Dismiss the image selection
    [pickerViewController dismissModalViewControllerAnimated:YES];
    [pickerViewController.view.superview removeFromSuperview];
}