ASIHTTP是否支持多线程? [英] Does ASIHTTP support multi threads?

问题描述

ASIHTTP是否支持多线程?如果可以的话，我希望每个线程都链接到aUIProgressbar，该如何构造代码?

Does ASIHTTP support multi thread? If sure, I hope each thread link to aUIProgressbar, how can I construct the codes?

谢谢

interdev

推荐答案

是的，ASIHttpRequest一次可以处理更多内容.请参阅帮助文档，并注意这一部分.

Yups, ASIHttpRequest can handle more than on request at a time. See the help documentation and do notice this part.

使用队列

此示例执行相同的操作再一次，但是我们已经创建了一个NSOperationQueue用于我们的请求.

This example does the same thing again, but we've created an NSOperationQueue for our request.

使用NSOperationQueue(或ASINetworkQueue，请参见下文)为您提供对异步的更多控制要求.使用队列时，只有一个一定数量的请求可以在同时.如果您添加更多请求比队列的请求多maxConcurrentOperationCount属性，请求将等待其他人在他们开始之前完成.

Using an NSOperationQueue (or ASINetworkQueue, see below) gives you more control over asynchronous requests. When using a queue, only a certain number of requests can run at the same time. If you add more requests than the queue's maxConcurrentOperationCount property, requests will wait for others to finish before they start.

• (IBAction)grabURLInTheBackground:(id)发送者{如果(！[自队列]){[self setQueue:[[[[NSOperationQueue alloc]init] autorelease]];}NSURL * url = [NSURL URLWithString:@" http://allseeing-i.com "]；ASIHTTPRequest *请求=[ASIHTTPRequest requestWithURL:url];
  [request setDelegate:self];
  [要求setDidFinishSelector:@selector(requestDone :)];[要求setDidFailSelector:@selector(requestWentWrong :)];[[自队列] addOperation:request];//队列是一个NSOperationQueue}

• (IBAction)grabURLInTheBackground:(id)sender { if (![self queue]) { [self setQueue:[[[NSOperationQueue alloc] init] autorelease]]; } NSURL *url = [NSURL URLWithString:@"http://allseeing-i.com"]; ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
  [request setDelegate:self];
  [request setDidFinishSelector:@selector(requestDone:)]; [request setDidFailSelector:@selector(requestWentWrong:)]; [[self queue] addOperation:request]; //queue is an NSOperationQueue }

(void)requestDone:(ASIHTTPRequest *)request {NSString * response = [request responseString];}

(void)requestDone:(ASIHTTPRequest *)request { NSString *response = [request responseString]; }

(void)requestWentWrong:((ASIHTTPRequest*)request {NSError * error = [request error];}

(void)requestWentWrong:(ASIHTTPRequest *)request { NSError *error = [request error]; }

在上面的示例中，队列"是一个保留的NSOperationQueue属性我们的控制器.

In the above sample, ‘queue’ is a retained NSOperationQueue property of our controller.

我们正在设置自定义选择器请求时将被调用成功或失败.如果您不设定这些是默认值(requestFinished:和requestFailed :)将被使用，因为在上一个示例中.

We’re setting custom selectors that will be called when the request succeeds or fails. If you don’t set these, the defaults (requestFinished: and requestFailed:) will be used, as in the previous example.

处理成功和失败多个请求

Handling success and failure for multiple requests

如果您需要处理成功，并且许多不同类型的故障请求，您有几种选择:

If you need to handle success and failure on many different types of request, you have several options:

1. 如果您的请求都是相同的广泛类型，但您想区分它们，您可以设置的userInfo NSDictionary属性每个请求都带有您自己的自定义数据您可以读完/失败的委托方法.
2. 如果您需要以完全不同的方式处理成功和失败每个请求的方式，设置不同的setDidFinishSelector/每个请求的setDidFailSelector
3. 对于更复杂的情况，或者您想解析响应的地方在后台，创建一个最小的每个的ASIHTTPRequest子类请求类型和覆盖requestFinished:和failWithProblem:.

希望这会有所帮助.

谢谢

Madhup

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