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如何在iPhone（iOS）中暂停/恢复下载

[英]How to pause/resume downloads in iPhone (iOS)

原文 2012-05-02 12:54:30 3 4 iphone/ ios/ ipad/ download

I have to download large amount of data (anywhere between 300MB - 1GB ). 我必须下载大量数据（ 300MB到1GB之间）。

I am currently using **NSURLConnection** to download the data. 我目前正在使用**NSURLConnection**来下载数据。 But, now i am looking at a scenario where the user might loose the internet connection during the download process. 但是，现在我正在研究用户在下载过程中可能会丢失互联网连接的情况。 Currently i am restarting the entire download process in this scenario, which i think is a very bad way of downloading and a waste of user bandwidth. 目前我正在重新启动这个场景中的整个下载过程，我认为这是一种非常糟糕的下载方式和浪费用户带宽。

Is there a process in which i can manage the downloads with Pause/Resume functionality while downloading . 是否有一个过程可以在下载时使用暂停/恢复功能管理下载 。

4 个解决方案

Here's a tutorial of how to do this on IOS. 这是一个如何在IOS上执行此操作的教程。

Also check documentation . 还要检查文档。 This will require your server to support range headers. 这将要求您的服务器支持范围标头。

this needs synchronization both at server as well as client side. 这需要在服务器和客户端同步。 and i allready told u to use chunks. 我已经告诉你要用块了。 definetely chunks is the only solution if you want to pause. 如果你想暂停，definetely chunks是唯一的解决方案。 you will send the server with a chunk id to stop till this i'll get remaing next and next time you will ask from that id. 你将发送一个带有块ID的服务器停止，直到我将在下一次重新下载，下次你将从该id询问。

FIXED SOLUTION : 固定解决方案：

Fixed broken link and here is the working Tutorial to resume FIle Download file in iOS. 修复了断开的链接，这是在iOS中恢复文件下载文件的工作教程。