在UIImagePickerController取消按钮不显示？

Question

这里我使用下面的代码.如果有人知道这个问题,请帮助我.我也试过下面的网址,但它不起作用.请帮我

iOS7 UIImagePickerController取消按钮消失 UIPopoverController里面的UIImagePickerController在iOS7上没有显示取消按钮

UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:picker animated:YES completion:NULL];
picker.navigationBar.tintColor = [UIColor redColor];
picker.navigationBar.barStyle = UIBarStyleBlackOpaque;
picker.navigationBar.topItem.rightBarButtonItem.tintColor = [UIColor blackColor];

我的问题:

我的需求:

Answer 1

这对我有用:

    present(imagePicker, animated: true, completion: {
        imagePicker.navigationBar.topItem?.rightBarButtonItem?.tintColor = .black
    })

Answer 2

更改 UIImagePickerController navigationBar.tintColor 尝试以下代码：

UINavigationBar *bar = [self.navigationController navigationBar];
    [bar setTintColor:[UIColor blueColor]];