AFNetworking的多个请求 [英] Multiple request with AFNetworking

问题描述

我正在尝试在后台执行多个请求以下载许多jsons并检查来自他们的数据但我不知道如何在这种情况下使用AFNetworking。

I'm trying to do multiple request in background to download many jsons and check data from them but I don't know how to use AFNetworking in that case.

我试着做类似Wiki的解释，但是当它要下载第二个文件时，应用程序会中断。我想在后台完成所有这些过程。

I tried to do like Wiki explaings but when it's going to download the second file then the app breaks. I want to do all the process in background.

谢谢

推荐答案

查看 AFHTTPClient 's
enqueueBatchOfHTTPRequestOperations：progressBlock：completionBlock： ，可让您将多个请求排入队列同时进行操作，还有一个额外的好处，即当所有这些请求完成时调用完成处理程序，以及跟踪进度的块。另请注意，每个操作仍然可以拥有自己的完成处理程序（例如，如果您必须处理请求的结果，则非常有用）。

Check out AFHTTPClient's enqueueBatchOfHTTPRequestOperations:progressBlock:completionBlock:, which lets you enqueue multiple requests operations at once with the added bonus of having a completion handler that is called when all of those requests have finished, as well as a block for tracking the progress. Also note, that every single operation can still have its own completion handler (useful if you have to process the results of a request, for example).

如果你不喜欢需要自定义请求操作（并且不需要单独的完成块），您也可以使用 enqueueBatchOfHTTPRequestOperationsWithRequests：progressBlock：completionBlock： ，允许您传递数组直接 NSURLRequest ，无需自行构建操作。

If you don't need to customize the request operation (and don't need individual completion blocks), you can also use enqueueBatchOfHTTPRequestOperationsWithRequests:progressBlock:completionBlock:, which allows you to pass an array of NSURLRequest directly without having to build the operations yourself.

这篇关于AFNetworking的多个请求的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！