iOS实现相册多选图片上传功能

//获取到相册的所有图片- (void)addAllPhotos{  @WeakObj(self);  _assetsLibrary=[[ALAssetsLibrary alloc]init];  [_assetsLibrary enumerateGroupsWithTypes:ALAssetsGroupSavedPhotos usingBlock:^(ALAssetsGroup *group, BOOL *stop) {    @StrongObj(self);    if (group) {      [group enumerateAssetsUsingBlock:^(ALAsset *result, NSUInteger index, BOOL *stop) {        if (result) {          // 把相册储存到数组中，方便后面展示相册时使用          CGImageRef cgImage = [result thumbnail];          UIImage *image = [UIImage imageWithCGImage:cgImage];          NSData *imageData = UIImageJPEGRepresentation(image,0.5);          UIImage *newImage = [UIImage imageWithData:imageData];          UZGPhotoChooseModel *model=[[UZGPhotoChooseModel alloc]init];          model.image=newImage;          model.currentImageIsSelect=NO;//初始化默认未选中          model.showBackView=NO;//是否显示背景遮罩          model.row=index;          [self.cellInfoArray addObject:model];          [self.myCollectionView reloadData];        }      }];    }  } failureBlock:^(NSError *error) {      }];}//选中图片后刷新图片上面的选中数字- (selectCellBolck)reloadCellSelectBlock:(NSIndexPath *)indexPath{  @WeakObj(self);  __block UZGPhotoChooseModel *model=self.cellInfoArray[indexPath.row];  selectCellBolck block=^(BOOL current_isSelect){    if (selfWeak.selectNum>self.max_selectNum) {      return;    }    if (current_isSelect) {      selfWeak.selectNum++;    }else{      selfWeak.selectNum--;    }    model.currentImageIsSelect=current_isSelect;    model.totalNum=selfWeak.selectNum;    [selfWeak.cellInfoArray replaceObjectAtIndex:indexPath.row withObject:model];    [selfWeak reloadCurrentNum];    [selfWeak.myCollectionView reloadData];  };  return block;}