从不兼容的类型'CameraVIewController*''分配给'id <UINavigationControllerDelegate,UIImagePickerControllerDelegate>'

Question

Assigning to id<UINavigationControllerDelegate,UIImagePickerControllerDelegate> from incompatible type CameraViewController* 警告显示近picker.delegate = self;线

-(IBAction) getPhoto:(id) sender {
UIImagePickerController * picker = [[UIImagePickerController alloc] init];
picker.delegate = self;

if((UIButton *) sender == takePhoto) {
    picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
} else {
    //picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
   picker.sourceType = UIImagePickerControllerSourceTypeCamera;
}

[self presentModalViewController:picker animated:YES];

}

Answer 1

请注意,您必须符合UIImagePickerControllerDelegate和UINavigationControllerDelegate协议才能使用图像选择器.

Answer 2

只需添加两个协议.

@interface MyViewController : UIViewController <UIImagePickerControllerDelegate, UINavigationControllerDelegate>

然后显然设置委托.:)

Answer 3

说明UIImagePickerController代表必须实现UIImagePickerControllerDelegate协议的文档.你CameraViewController要么没有实现这个协议,要么没有声明它在它的标题中这样做.