如何将图片保存至自定义分组(4)

                                                   
                                          //add photo to the target album 
                                          [group addAsset: asset]; 
                                           
                                          //run the completion block 
                                          completionBlock(nil); 
                                           
                                      } failureBlock: completionBlock]; 
 
                                //album was found, bail out of the method 
                                return; 
                            }