下面是一个异步请求加载图片数据的样例
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//定义NSURL//定义NSURLRequestlet request:NSURLRequest=NSURLRequest(URL:imgURL)//异步获取图片NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue(), completionHandler: {(response:NSURLResponse!,data:NSData!,error:NSError!)->Void in //将图片数据赋予UIImage let img=UIImage(data:data) self.BgImageView.image = img}) |
原文：http://www.cnblogs.com/Free-Thinker/p/4841053.html
