UIImagePickerController 关闭后导航栏无响应

Question

仅在 iOS 7 上，我的应用程序中的导航栏在使用 UIImagePickerController 然后关闭后不响应任何触摸（无论是否选择了图片）。导航栏下方的屏幕功能正常，但现在无法在应用程序中导航返回；用户卡在这个屏幕上。

我正在从代码中启动 UIImagePickerController，尽管应用程序的其余部分在情节提要中进行了布局。

UIImagePickerController *mediaUI = [[UIImagePickerController alloc] init];
mediaUI.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
mediaUI.mediaTypes = [NSArray arrayWithObject:(NSString *) kUTTypeImage];
mediaUI.allowsEditing = NO;
mediaUI.delegate = self;
[controller presentModalViewController: mediaUI animated: YES];

在此先感谢您的帮助。

Answer 1

希望您正确地执行了这些步骤！

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {

    [picker dismissViewControllerAnimated:YES completion:NULL];

}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {

    [picker dismissViewControllerAnimated:YES completion:NULL];

}

当你打电话时

 UIImagePickerController *picker = [[UIImagePickerController alloc] init];
 picker.delegate = self;
 picker.allowsEditing = YES;
 picker.sourceType = UIImagePickerControllerSourceTypeCamera;

[self presentViewController:picker animated:YES completion:NULL];

干杯！

Answer 2

我注意到日志显示 "Unbalanced calls to begin/end appearance transitions for" 启动控制器。当它出现时，我立即从另一个控制器启动图像选择器控制器。这在 iOS 8 上工作正常，但在 iOS 7 上需要延迟。我在短暂延迟后通过调用我的方法修复了它：

[self performSelector:@selector(takePicture) withObject:nil afterDelay:.1];

UIImagePickerController 关闭后导航栏无响应

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