UIImagePickerController 本地照片

有两个协议UIImagePickerControllerDelegateUINavigationControllerDelegate- (void)buttonAction{    //创建对象    UIImagePickerController *pick = [[UIImagePickerController alloc] init];    pick.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;    pick.allowsEditing = YES;    pick.delegate = self;//跳转到相册    [self presentViewController:pick animated:YES completion:^{    }];}//协议方法- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{  //取出图片    UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];//赋值self.imageView.image = image; //返回    [picker dismissViewControllerAnimated:YES completion:^{    }];}