AFNetworking是否有后台支持？ [英] Does AFNetworking have backgrounding support?

问题描述

我正在调查 AFNetworking 作为 ASIHTTPRequest 的替代品，并注意完全没有有关它是否支持后台下载/上传的信息。

I'm in the process of investigating AFNetworking as a replacement for ASIHTTPRequest, and notice a complete lack of information on whether it supports background downloads/uploads.

使用 ASIHTTPReqeust 对象，您所要做的就是调用 [request setShouldContinueWhenAppEntersBackground：YES] ，请求将在后台继续。在 AFNetworking 中是否有任何支持？

With an ASIHTTPReqeust object, all you have to do is call [request setShouldContinueWhenAppEntersBackground:YES] and the request will continue in the background. Is there any support for this in AFNetworking?

推荐答案

编辑：从 AFNetworking 1.0RC1 开始，这是显式功能。 AFURLConnectionOperation 现在有方法 setShouldExecuteAsBackgroundTaskWithExpirationHandler：，它可以为您透明地管理所有这些。

EDIT: As of AFNetworking 1.0RC1, this is an explicit feature. AFURLConnectionOperation now has the method setShouldExecuteAsBackgroundTaskWithExpirationHandler:, which transparently manages all of this for you.

这是一个隐含的功能，所以我并没有考虑做广告。您需要做的就是：

- (void)applicationWillResignActive:(UIApplication *)application {
    __block UIBackgroundTaskIdentifier backgroundTaskIdentifier = [application beginBackgroundTaskWithExpirationHandler:^(void) {
        [application endBackgroundTask:backgroundTaskIdentifier];
        [[YourRestClient sharedClient] cancelAllHTTPOperations];
    }];
}

或者，如果您管理自己的运营拥有 NSOperationQueue ，只需 -cancelAllOperations 。

Or, if you manage your operations in your own NSOperationQueue, just -cancelAllOperations here instead.

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