Question

Like it s written in the title, How can I download data from a server in my Cocoa Application? So far I looked for, I found this.

Answer 1

ASIHTTPRequest 计算机和麦克风工程

Answer 2

如果你不再同时下载大量物品,并再次提出简单的全球培训要求,最容易的方法就是向全球的一个问题发出同步要求:

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
  NSURLRequest* request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.google.com/"]];
  NSURLResponse* response = nil;
  NSError* error = nil;
  NSData* result = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
  // There will be response data in response now, like the http status code
  // etc. You should check this information to make sure you didn t get a 404
  // or some other http status error
  if( result ) {
    // you have a good result, do something with it like create a new object or
    // pass it to a method on this object, etc.
    dispatch_async(dispatch_get_main_queue(), ^{
      [self doSomethingWithResponseData:result];
    });
  } else {
    // You got an error making the connection, so handle it
    NSLog(@"Error making connection: %@", error);
  }
});

** 说明:这一样本代码使用全球疫苗,因此只能从Snow Leopard(10.6)或更糟。如果你需要瞄准“ Leopard”或“猛虎组织”,那么你可以使用已派遣的read光挑选器,但不能像在网上。

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