使用 xcode 5 从库中选择后，图像未加载到视图中

Question

我正在尝试从 iphone 的库中简单地选择一张图像并将其显示在视图上。这里是头文件参考：

@interface myappViewController : UIViewController <UIImagePickerControllerDelegate, UINavigationControllerDelegate>{
UIImagePickerController *imagepicker;
UIImagePickerController *imagepicker2;
UIImage *image;
IBOutlet UIImageView *imagepickerview;

}

- (IBAction)TakePhoto;
- (IBAction)ChooseExisting;

@end

下面是实现代码：

@interface myappViewController ()

@end

@implementation myappViewController

- (IBAction)TakePhoto{

imagepicker = [[UIImagePickerController alloc] init];
imagepicker.delegate = self;
[imagepicker setSourceType:UIImagePickerControllerSourceTypeCamera];
[self presentViewController:imagepicker animated:YES completion:NULL];

}

- (IBAction)ChooseExisting{

imagepicker2 = [[UIImagePickerController alloc] init];
imagepicker2.delegate = self;
[imagepicker2 setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
[self presentViewController:imagepicker2 animated:YES completion:NULL];

}

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

image = [info objectForKey:UIImagePickerControllerOriginalImage];
[imagepickerview setImage:image];

}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)imagepickerview{

[self dismissViewControllerAnimated:YES completion:NULL];

}

在故事板上我有两个按钮。一种用于选择现有的，一种用于拍照。如果我选择选择现有的库，我可以选择一个图像。问题是图像没有被选中，然后被重定向回 xcode 视图。相反，我必须单击照片库导航控制器中的取消按钮，然后才能看到视图中加载的图像。知道为什么加载不正确吗？

Answer 1

请使用valueForKey 而不是objectForKey 并在获取图像之前关闭图像选择器。

[self dismissViewControllerAnimated:NO completion:nil];

image = [info valueForKey:UIImagePickerControllerOriginalImage];
[imagepickerview setImage:image];