objective-c - PrepareForSegue 与 UIImagePickerController

Question

我正在尝试将 prepareForSegue 与使用 UIImagePickerController 从相机胶卷或相机拍摄的图像一起使用。这就是我现在所拥有的，我不知道如何完成它，我希望你能帮助我

View Controller .h

    @interface ViewController : UIViewController
<UIImagePickerControllerDelegate, UINavigationControllerDelegate>

-(IBAction)escoger:(id)sender;
-(IBAction)camara:(id)sender;
@property(strong,nonatomic) UIImagePickerController *imagepicker;
@property(strong,nonatomic)IBOutlet UIImageView *image;

View Controller .m

    -(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{


    if ([segue.identifier isEqualToString:@"escoger"]) {

        //UIImagePickerController *intro = [UIImagePickerController  ]

        imagepicker = [[UIImagePickerController alloc]init];

        imagepicker.delegate = self;

        imagepicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;


        [self presentViewController:imagepicker animated:YES completion:nil];

}}

Answer 1

您无法在 prepareForSegue 中显示图像选择器.如果您想实际使用已拍摄的照片，则不是。您需要做的是重新连接，以便当前触发 segue 的操作改为打开图像选择器。然后，在您的选择器代表的 didFinishPickingMediaWithInfo 中，您手动触发 segue (performSegueWithIdentifier:sender:)