ios5 NSURLConnection异步连接实现

来源：互联网发布：淘宝海尔冰箱正品吗编辑：程序博客网时间：2024/06/10 00:12

//风火轮实现

UIActivityIndicatorView *activityView=[[UIActivityIndicatorView alloc]initWithFrame:CGRectMake(150, 30, 100, 100)];

[activityView setBackgroundColor:[UIColor lightGrayColor]];

[self.view addSubview:activityView];

[activityView startAnimating];

NSURLRequest*request=[[NSURLRequest alloc]initWithURL:[NSURL URLWithString:@"http://www.youku.com/"]];

NSOperationQueue*operationQueue=[[NSOperationQueue alloc]init];

[NSURLConnection sendAsynchronousRequest:request

queue:operationQueue

completionHandler:^(NSURLResponse*urlResponce,NSData*data,NSError*error)

{

if(error)

{

NSLog(@"error:\n%@",error);

return ;

}

[activityView stopAnimating];

//NSData转换成NSString

NSString* aStr = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];

NSLog(@"get data%@",data);

NSLog(@"result%@",aStr);

}

];

[operationQueue release];

//异步请求

NSURLRequest*urlRequest=[[NSURLRequest alloc]initWithURL:[NSURLURLWithString:@"http://www.youku.com/"]];

NSURLResponse*urlResponce=nil;

NSError*error=nil;

NSData*data=[NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&urlResponceerror:&error];

NSLog(@"data%@",data);

if (error) {

NSLog(@"error%@",error);

return;

}