Assigning to id<UINavigationControllerDelegate,UIImagePickerControllerDelegate> from incompatible type CameraViewController*警告显示在picker.delegate = self;行附近
-(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];
}
最佳答案
The documentation for UIImagePickerController 说，委托(delegate)必须实现UIImagePickerControllerDelegate协议(protocol)。您的CameraViewController要么未实现此协议(protocol)，要么未在其 header 中声明它已实现此协议(protocol)。
关于objective-c - 从不兼容的类型 'id<UINavigationControllerDelegate,UIImagePickerControllerDelegate>'分配给 'CameraVIewController*''，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/8571783/