管理两个NSURLConnection [英] Managing two NSURLConnection

问题描述

我想从两个不同的kml文件中做两个异步请求，所以我先设置两个请求：

I want to do two async request from two different kml file, so I setup two requests first:

NSString *server1URL = [NSString stringWithFormat:...];
NSMutableURLRequest *firstRequest =[NSMutableURLRequest requestWithURL:[NSURL URLWithString:server1URL]];
[firstRequest setHTTPMethod:@"GET"];
NSURLConnection *AConnection = [NSURLConnection connectionWithRequest:firstRequest delegate:self];

NSString *server2URL = [NSString stringWithFormat:...];
NSMutableURLRequest *secondRequest =[NSMutableURLRequest requestWithURL:[NSURL URLWithString:server2URL]];
[secondRequest setHTTPMethod:@"GET"];
NSURLConnection *BConnection = [NSURLConnection connectionWithRequest:secondRequest delegate:self];

然后我初始化 NSMutableData 我将使用：

Then I init NSMutableData I will be using:

AResponseData = [[NSMutableData alloc] init];
BResponseData = [[NSMutableData alloc] init];

然后，我推荐这个发布并执行此操作：

Then, I refer this post and did this:

connectionToInfoMapping = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
CFDictionaryAddValue(connectionToInfoMapping, AConnection, [NSMutableDictionary dictionaryWithObject:AResponseData forKey:@"receivedData"]);
CFDictionaryAddValue(connectionToInfoMapping, BConnection, [NSMutableDictionary dictionaryWithObject:BResponseData forKey:@"receivedData"]);

好的，那就是代表：

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    const NSMutableDictionary *connectionInfo = CFDictionaryGetValue(connectionToInfoMapping, connection);
    [[connectionInfo objectForKey:@"receivedData"] appendData:data];
}

因此我可以将数据附加到与连接匹配的正确NSMutableData 。

So with this I can get data append to the correct NSMutableData that matches the connection.

现在在 - （void）connectionDidFinishLoading：（NSURLConnection *）连接，我想如果A完成，做到这一点，如果B完成，请执行此操作，我的问题是，我该怎么做？

Now in - (void)connectionDidFinishLoading:(NSURLConnection *)connection, I want to "If A finish, do this, if B finish, do this", and my question is, how can I do this?

推荐答案

- (void)connectionDidFinishLoading:(NSURLConnection *)connection{
    if( [connection isEqual: AConnection] ){
        // do connection A stuff
    }
    else if( [connection isEqual: BConnection] ){
        // do connection B stuff
    }  
}

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