NSMutableArray *myWechatArray = [NSMutableArray arrayWithCapacity:1];    for (QHHomeAddOtherInfoModel *model in array) {        if ( [model.chooseType isEqualToString:@"wechat"]) {            [myWechatArray addObject:model];        }     }    [array removeObjectsInArray:myWechatArray];    if (_contactArray) {          [_contactArray removeAllObjects];    }      [_contactArray addObjectsFromArray:myWechatArray];    [_contactArray addObjectsFromArray:array];