objective c-UIImagePickerController沒打開

UIImagePickerController沒打開

在應用中打開一個UIImagePickerController 對象。代碼：

   self.imgPicker = [[UIImagePickerController alloc] init];
   self.imgPicker.delegate = self;
   self.imgPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
   self.imgPicker.modalPresentationStyle = UIModalPresentationFullScreen;
   [self presentViewController:self.imgPicker animated:YES completion:nil];

然後應用就崩潰了：

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

我在ViewController 類中添加了下面的方法：

- (BOOL) shouldAutorotate
{
    return NO;
}
-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationPortrait;
}    
- (BOOL)shouldAutorotateToInterfaceOrientation:    (UIInterfaceOrientation)toInterfaceOrientation {   
    return UIInterfaceOrientationMaskPortrait;
}

謝謝

最佳回答：

shouldAutorotate return NO,改成return YES試試

- (BOOL) shouldAutorotate
{
    return YES;
}