通过发送请求和实现NSOperationQueue的实现在数据库中并行存储响应 [英] Implementation of NSOperationQueue by sending request & Storing response in Database parallely

问题描述

我已经实现了NSOPERATIONQUEUE通过发送请求，我可以从服务器下载响应，但问题是我无法并行处理sqlite插入/更新响应，我得到数据库锁定错误。所以任何人都可以建议我使用数据库插入/更新我的下载响应的解决方案??

I have implemented NSOPERATIONQUEUE By sending request and i can able to download response from server but the problem is i cant able to parallely process the sqlite to insert/update the response,i am getting Database Locked Error.So Can anyone suggest me a solution to work with database for insertion/updation of my downloded response??

推荐答案

必须使用GCD在主线程中运行所有数据库命令。在ios中同步下载和主线程是一种常见的模式。

you must use GCD to run all databse commands in the main thread. It is a common pattern in ios to syncronize download and main thread.

dispatch_async(dispatch_get_main_queue(), ^{
 // your do stuff
});

这是一个很好的教程来自Ray Wenderlich。

Here is a nice tutorial from Ray Wenderlich.

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