Question

我尝试使用故事板在新的iOS7 Xcode项目中设置imagePicker，但在找到以下代码之前似乎无法在线找到任何示例。

我已经设置了它，以便当按下按钮时，它使用模态推送物体导航到具有"UIImagePickerController"类的视图，该类显然在图像选择器代码中调用。

然而，当应用程序运行时，点击后允许应用程序访问您的照片，任何获得帮助的机会都不会加载任何内容吗？

错误截屏： https://pbs.twimg.com/media/Bdy7v9JCAAABpvS.jpg:large

界面设置：

@interface ridecount_AddRide_ViewController : UIViewController<UIImagePickerControllerDelegate, UINavigationControllerDelegate>{

码

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
    UIImagePickerController *controller = [segue destinationViewController];
    controller.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    controller.delegate = self;
}
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
    [self dismissViewControllerAnimated:YES completion:nil];
}
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
    [self dismissViewControllerAnimated:YES completion:nil];
    UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
    [[self.view viewWithTag:100023] removeFromSuperview];
    UIImageView * imageView = [[UIImageView alloc] initWithFrame:CGRectMake(320/2-200/2, 10, 100, 100)];
    imageView.tag = 100023;
    imageView.contentMode = UIViewContentModeScaleAspectFit;
    imageView.image = image;
    [self.view addSubview:imageView];
}

Answer 1

初始化控制器 UIImagePickerController *controller = [[segue destinationViewController] init];

Answer 2

用于SWIFT - 有点不同的方法

//Init property
var imagePicker = UIImagePickerController()

然后分配

override func prepareForSegue(segue:UIStoryboardSegue!, sender: AnyObject!)
{
    imagePicker = segue.destinationViewController as UIImagePickerController
    imagePicker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
    imagePicker.allowsEditing = false
    imagePicker.delegate = self
}

Answer 3

我遇到了同样的问题。仅当UIImagePickerController设置为availableMediaTypesForSourceType时，从故事板初始化的UIImagePickerControllerSourceTypeCamera对象才能正常工作。

如果您想保留prepareForSegue:功能，可以从故事板中删除UIImagePickerController，然后使用以下代码以编程方式创建它：

- (void)showCameraRollController
{
    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
    UIStoryboardSegue *segue = [UIStoryboardSegue segueWithIdentifier:@"CameraRollController" source:self destination:imagePickerController performHandler:^{
        [self presentViewController:imagePickerController animated:YES completion:NULL];
    }];
    [self prepareForSegue:segue sender:self];
    [segue perform];
}

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([segue.identifier isEqualToString:@"CameraRollController"]) {
        UIImagePickerController *imagePickerController = [segue destinationViewController];
        imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        imagePickerController.delegate = self;
    }
}

Answer 4

Possibly, another alternative is to subclass UIImagePickerController and add to the subclass:

- (instancetype)initWithCoder:(NSCoder *)aDecoder { return [super init]; }

It seemed to work.

iOS7故事板图像选择器无法正常工作:(

4 个答案: