mJ模型框架摘录

模型数组：

- (NSDictionary *)arrayModelClasses
{
    return @{@"pic_urls" : [DWPhoto class]};
}

替换变量
- (NSDictionary *)replaceKeys
{
    return @{@"desc" : @"description"};
}

[MBProgressHUD showMessage:@"加载数据" toView:_scrollView];
[MBProgressHUD hideAllHUDsForView:_tableView animated:YES];