DismissViewControllerAnimated 不适用于导航答案

【问题标题】：DismissViewControllerAnimated not working with navigationDismissViewControllerAnimated 不适用于导航
【发布时间】：2013-05-16 08:51:16
【问题描述】：

在我的应用程序中，我在关闭已推送到新视图的视图后使用以下代码实现，当我尝试实现视图时，视图并没有关闭而是重叠。这是我的代码，

-(IBAction)selectExitingPicture
 {
if([UIImagePickerController isSourceTypeAvailable:
    UIImagePickerControllerSourceTypePhotoLibrary])
   {
    UIImagePickerController *picker= [[UIImagePickerController alloc]init];
    picker.delegate = self;
    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    [self presentViewController:picker animated:YES completion:nil];
   }
 }
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image
             editingInfo:(NSDictionary *)editingInfo
 {
    [picker dismissViewControllerAnimated:YES completion:^{
    cropingImageViewCon = [[CropingImageViewControl alloc]initWithNibName:@"CropingImageView" bundle:nil];
    cropingImageViewCon.delegate = self;
    cropingImageViewCon.originalImg = image;
    [self.navigationController presentModalViewController:cropingImageViewCon animated:YES];
    }];
  }

我的代码有什么问题，请任何人帮忙。

【问题讨论】：

一开始你是如何展示选择器的？
@MikePollard 我已经更新了任务代码。请检查
您期望什么视图应该被忽略？查看代码，应该关闭 imagepicker 视图，之后应该在具有调用 selectExitingPicture 的控件的视图上模态显示croppingImageViewCon 视图
关闭 ImagePicker 后是否要推入 CropingImageViewControl？
@Marcel 当我这样做时它显示Attempt to present <View2: 0x817a7d0> on <UINavigationController: 0x81721a0> whose view is not in the window hierarchy!

标签： ios uinavigationcontroller presentmodalviewcontroller

【解决方案1】：

如果你想推入CropingImageViewControl，那你就走错路了，

使用

[self.navigationController pushViewController:yourViewCotrollerObject animated:YES];

而不是使用presentModalViewController:

【讨论】：