blocks|key|1467094|text|我建议你使用背景会话。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1467095|您可以使用默认会话，或者使用后台过期标识符最多为10分钟的常规NSURLConnection来完成任务。|offset|length|style|BOLD|1467096|后台任务标识符文档|1467097|ref/occ/instm/UIApplication/beginBackgroundTaskWithExpirationHandler|1467098|在后台任务中使用NSURLConnection+(您还得到iOS+6的支持)|1467099|NSURLConnection+best+practise+when+enter+background|1467100|根据新的标准，您可以使用后台会话来处理下载/服务器上载。|1467101|苹果公司关于处理后台下载的文档|1467102|ref/doc/uid/TP40013509-SW1|1467103|--苹果公司的一个简单项目，演示了技术|1467104|7|1467105|希望这对你有帮助！|1467106|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.apple.com/library/ios/DOCUMENTATION/UIKit/Reference/UIApplication_Class/Reference/Reference.html#//apple_ref/occ/instm/UIApplication/beginBackgroundTaskWithExpirationHandler|1|https://stackoverflow.com/questions/18034565/nsurlconnection-best-practise-when-enter-background|2|https://developer.apple.com/library/ios/documentation/cocoa/Conceptual/URLLoadingSystem/Articles/UsingNSURLSession.html#//apple_ref/doc/uid/TP40013509-SW1|3|https://developer.apple.com/library/ios/samplecode/SimpleBackgroundTransfer/Listings/SimpleBackgroundTransfer_APLViewController_m.html#//apple_ref/doc/uid/DTS40013416-SimpleBackgroundTransfer_APLViewController_m-DontLinkElementID_7^0|0|5|15|0|0|9|0|0|1W|0|0|0|12|0|0|1F|1|0|C|4|0|0|C|0|0|Q|2|0|0|H|0|0|1|3|0|0^^$0|@$1|2|3|4|5|6|7|1F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1G|8|@$D|1H|E|1I|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|1J|8|@$D|1K|E|1L|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|1M|8|@]|9|@$D|1N|E|1O|1|1P]]|A|$]]|$1|L|3|M|5|6|7|1Q|8|@$D|1R|E|1S|F|G]]|9|@]|A|$]]|$1|N|3|O|5|6|7|1T|8|@]|9|@$D|1U|E|1V|1|1W]]|A|$]]|$1|P|3|Q|5|6|7|1X|8|@$D|1Y|E|1Z|F|G]]|9|@]|A|$]]|$1|R|3|S|5|6|7|20|8|@$D|21|E|22|F|G]]|9|@]|A|$]]|$1|T|3|U|5|6|7|23|8|@]|9|@$D|24|E|25|1|26]]|A|$]]|$1|V|3|W|5|6|7|27|8|@$D|28|E|29|F|G]]|9|@]|A|$]]|$1|X|3|Y|5|6|7|2A|8|@]|9|@$D|2B|E|2C|1|2D]]|A|$]]|$1|Z|3|10|5|6|7|2E|8|@]|9|@]|A|$]]|$1|11|3|-4|5|6|7|2F|8|@]|9|@]|A|$]]]|12|$13|$5|14|15|16|A|$17|18]]|19|$5|14|15|16|A|$17|1A]]|1B|$5|14|15|16|A|$17|1C]]|1D|$5|14|15|16|A|$17|1E]]]]

I would advise you to use Background session.

You may use Default session or a regular NSURLConnection with a background expiry identifier with a max of 10 minutes to complete your tasks

Background Task Identifier Documentation

<a href="https://developer.apple.com/library/ios/DOCUMENTATION/UIKit/Reference/UIApplication_Class/Reference/Reference.html#//apple_ref/occ/instm/UIApplication/beginBackgroundTaskWithExpirationHandler" rel="nofollow noreferrer">https://developer.apple.com/library/ios/DOCUMENTATION/UIKit/Reference/UIApplication_Class/Reference/Reference.html#//apple_ref/occ/instm/UIApplication/beginBackgroundTaskWithExpirationHandler</a>:

Using NSURLConnection in background task ( you also get iOS 6 support)

<a href="https://stackoverflow.com/questions/18034565/nsurlconnection-best-practise-when-enter-background">NSURLConnection best practise when enter background</a>

By the new standards you can use Background Session to handle downloads/ server uploads. 

Apple's documentation on handling background downloads

<a href="https://developer.apple.com/library/ios/documentation/cocoa/Conceptual/URLLoadingSystem/Articles/UsingNSURLSession.html#//apple_ref/doc/uid/TP40013509-SW1" rel="nofollow noreferrer">https://developer.apple.com/library/ios/documentation/cocoa/Conceptual/URLLoadingSystem/Articles/UsingNSURLSession.html#//apple_ref/doc/uid/TP40013509-SW1</a>

A Simple project from Apple illustrating the technique

<a href="https://developer.apple.com/library/ios/samplecode/SimpleBackgroundTransfer/Listings/SimpleBackgroundTransfer_APLViewController_m.html#//apple_ref/doc/uid/DTS40013416-SimpleBackgroundTransfer_APLViewController_m-DontLinkElementID_7" rel="nofollow noreferrer">https://developer.apple.com/library/ios/samplecode/SimpleBackgroundTransfer/Listings/SimpleBackgroundTransfer_APLViewController_m.html#//apple_ref/doc/uid/DTS40013416-SimpleBackgroundTransfer_APLViewController_m-DontLinkElementID_7</a>

Hope this helps you !

I wish to send a little data (location Co-ordinates) to my server from the application which is running in background in iOS 7. I am using NSURLSessions for this purpose. 
I am confused regarding the type of session I should use for this purpose : 
Default Session: Can we create and use default sessions in background. If yes can it handle the network failures gracefully. 
Background Session: Can I upload data as NSData object using background session.

PS: Some code will be really appreciated dealing with network failure in both cases.

Sending Data To Server While App is Running in Background in iOS 7

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我希望从运行在iOS 7后台的应用程序中向我的服务器发送一些数据(位置坐标)。为此，我正在使用NSURLSessions。对于为此目的我应该使用何种类型的会议，我感到困惑：默认会话：可以在后台创建和使用默认会话。如果是，它可以优雅地处理网络故障。后台会话：可以使用后台会话将数据上传为NSData对象。PS:在这两种情况下，处理网络故障的代码都会很受欢迎。

问在iOS 7中应用程序在后台运行时向服务器发送数据
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