Question

我没有看到这两个问题加在一起，所以我想我会问。

PhotoViewController

-(void)viewDidAppear:(BOOL)animated
{

    UIImagePickerController *picker = [[UIImagePickerController alloc]init];
    picker.delegate = self;

    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){
        picker.sourceType = UIImagePickerControllerSourceTypeCamera;
    }
    else if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum]){
        picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
    }

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

}


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

    UIImage *image = info[UIImagePickerControllerEditedImage];
    if(!image) image = info[UIImagePickerControllerOriginalImage];

    picker.delegate = self;

    [self setPhotoForNextVC:image];

    [self dismissViewControllerAnimated:YES completion:nil];
    [self performSegueWithIdentifier:@"givePhotoToGiveDetailsSegue" sender:self];

}


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

选择照片有效，但是当我按下取消时，UIImagePickerController会不断恢复，我收到错误：

Presenting view controllers on detached view controllers is discouraged <UINavigationController: 0x10b38b560>.

Answer 1

我之前也遇到过这个问题。

对我而言，事实证明是这样，尤其是在ViewDidAppear中。操作系统不希望出现新的控制器。

制作另一种处理此问题的方法。

(void)bringUpCameraController {



UIImagePickerController *picker = [[UIImagePickerController alloc]init];
    picker.delegate = self;

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){
    picker.sourceType = UIImagePickerControllerSourceTypeCamera;
}
else if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum]){
    picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
}

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

} 我的解决方法：[self performSelector：＆lt;（bringUpCameraController）＆gt; withObject：其中（无）＆GT; afterDelay：其中（2.0）＆GT;]

这将消除信息。

UIImagePickerController不会取消，获取有关分离的ViewControllers的消息

1 个答案: