取消所有操作+ AFNetworking 3.0 [英] Cancel All Operations + AFNetworking 3.0

问题描述

我创建了一个继承自AFURLSessionManager的类HTTPServiceProvider。加入下面的代码来获得该数据。

I have created a class HTTPServiceProvider inherited from AFURLSessionManager. Added below code to get the data.

let configuration = NSURLSessionConfiguration.defaultSessionConfiguration()
let manager = AFURLSessionManager(sessionConfiguration: configuration)
let dataTask = manager.dataTaskWithRequest(request) { (response, responseObject, error) in
         //Perform some task
}
dataTask.resume()

我要添加到dataTask由operationQueue提供AFURLSesstionManger并取消在一些其它类中的所有操作（BaseController.swift ）再次调用相同的请求之前。

I want to add dataTask to operationQueue provided by AFURLSesstionManger and cancel all the operation in some other class (BaseController.swift) before calling the same request again.

尝试此代码但无法正常工作 -

self.operationQueue.addOperationWithBlock{
     //Added above code
}

$

HTTPServiceProvide.sharedInstance.operationQueue.cancelAllOperations

但它不起作用:(

谢谢。

推荐答案

对我来说是取消的最好方法所有请求是：

For me best way to cancel all request is:

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager]; //manager should be instance which you are using across application
[manager.session invalidateAndCancel];

这种方法有一个很大的优势：所有正在执行的请求都会调用失败块。我的意思是这个例子：

this approach has one big advantage: all your requests that are executing will call failure block. I mean this one for example:

        [manager GET:url
        parameters:nil
          progress:^(NSProgress * _Nonnull downloadProgress) {
              code
          } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
              code
          } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
              //this section will be executed
          }];

您需要知道的2件事情：

2 things you need to know:

• 将取消只与AFHTTPSessionManager的这一确切实例执行请求将用于invalidateAndCancel


• 后取消，你必须初始化AFHTTPSessionManager的新实例的所有请求 - 当你试图用旧的请求提出异常

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