ios - 在iPad ios 6.0上关闭时，UIIMagePickerController崩溃

我在装有iOS 6.0的iPad 4上工作。

我有一个具有以下init的ViewController(MyPickerController):

- (id)init
{
    self = [super init];
    if (self) {
        _picker = [[UIImagePickerController alloc] init];
        _picker.delegate = self;
        _picker.sourceType = UIImagePickerControllerSourceTypeCamera;
        [self.view addSubview:_picker.view];
    }
    return self;
}

我实现了以下UIPickerControllerDelegate方法来弃用MyPickerController:

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
    [self dismissViewControllerAnimated:YES completion:nil];
}

好吧，我有另一个 View Controller 以FormSheetStyle模态显示，当我点击一个按钮时，我想用以下代码显示MyPickerController:

MyPickerController * pickerVC = [[MyPickerController alloc] init];
[self presentViewController:pickerVC animated:YES completion:nil];

在我的AppDelegate中，我具有以下加法方法:

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {
    
    return (NSUInteger)[application supportedInterfaceOrientationsForWindow:window] | (1<<UIInterfaceOrientationPortrait);
    
}

当我点击UIIMagePicker的取消按钮进入MyPickerController时，应用程序崩溃并出现以下错误:

Terminating app due to uncaught exception 'UIApplicationInvalidInterfaceOrientation', reason: 'preferredInterfaceOrientationForPresentation must return a supported interface orientation!

阅读有关stackoverflow的相关问题，我还创建了以下UIImagePickerController类别:

@implementation UIImagePickerController (NonRotating)

- (BOOL)shouldAutorotate
{
    return NO;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationMaskPortrait;
}

- (NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait;
}

@end

谢谢!

最佳答案

尝试这样做。

如果您的 View Controller 位于UINavigationController内，则应为Navigationcontroller使用以下类别:

@implementation UINavigationController (autorotate)

- (NSUInteger)supportedInterfaceOrientations{
      return UIInterfaceOrientationMaskAll;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{
      return UIInterfaceOrientationMaskPortrait;
}


@end