delegates - UIImagePickerController 委托(delegate)警告

Question

我刚刚将照片选择器放入我的项目中，一切正常。唯一的事情是它坚持在我设置委托(delegate)的地方给我以下警告 -

Assigning to 'id<UINavigationControllerDelegate,UIImagePickerDelegate>' from incompatible type 'AddTargetViewController *'

我已经以正常方式在 AddTargetViewController.h 中设置了委托(delegate) -

@interface AddTargetViewController : UIViewController <UIImagePickerControllerDelegate>

我看不出有什么问题。正如我所说，它工作正常，并且所有委托(delegate)方法都按其应有的方式启动。

-(void)takePhoto {

    UIImagePickerController *imagePicker = [[[UIImagePickerController alloc] init] autorelease];

    imagePicker.delegate = self; // *** warning on this line ***
    imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
    imagePicker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;

    [self presentModalViewController:imagePicker animated:YES];

}

谢谢你的帮助!

Answer 1

这是对 iPhone - UIImagePickerControllerDelegate inheritance 的重复问题.

简而言之，您的 View Controller 必须符合 UINavigationControllerDelegate除了UIImagePickerDelegate .