Objective c UIImagePickerController隐藏取消按钮

我有一个UIImagePickerController，它可以通过按下按钮打开。下面是我用来打开UIImagePickerController的代码

- (BOOL)shouldStartPhotoLibraryPickerController {
    if (([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary] == NO
         && [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum] == NO)) {
        return NO;
    }

    UIImagePickerController *cameraUI = [[UIImagePickerController alloc] init];
    [cameraUI.navigationBar setBarTintColor:[UIColor colorWithRed:17/255 green:19/255 blue:18/255 alpha:1]];
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]
        && [[UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypePhotoLibrary] containsObject:(NSString *)kUTTypeImage]) {

        cameraUI.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        cameraUI.mediaTypes = [NSArray arrayWithObject:(NSString *) kUTTypeImage];

    } else if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum]
               && [[UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeSavedPhotosAlbum] containsObject:(NSString *)kUTTypeImage]) {

        cameraUI.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
        cameraUI.mediaTypes = [NSArray arrayWithObject:(NSString *) kUTTypeImage];

    } else {
        return NO;
    }

    cameraUI.allowsEditing = YES;
    cameraUI.delegate = self;

    [Flurry logEvent:@"Picture Choosen"];
    [self presentViewController:cameraUI animated:YES completion:nil];

    return YES;
}

视图第一次打开时很好。没有状态栏和预期的取消按钮。但一旦选择了任何相册，状态栏就会显示，当我导航回相册列表视图时，状态栏会保持不变，取消按钮不再存在。这只发生在iOS 8中。我在iOS 7上没有任何问题。我还在iOS 8.1上测试了它，但它仍然是一个问题。这是iOS中的一个bug还是我做错了什么？感谢您的帮助

试试这个：

---

cameraPicker.modalPresentationStyle=UIModalPresentationCurrentContext

谢谢，但我仍然有这个问题。我还发现了一个非常奇怪的现象，如果我按下后退按钮返回，取消按钮就会消失，但如果我从手机的左边缘滑动返回，取消按钮就会保留。我面临的问题也是一样的。你有解决办法吗？我也有同样的问题。您得到答案了吗？如果每个案例都不起作用，请参考此答案stackoverflow.com/a/50490924/1201274