下载文件iOS时的进度条 [英] Progress bar while downloading files iOS

问题描述

我使用以下内容从互联网上下载文件：

I am using the following to download the files from the internet:

NSData * myXMLData1 = [[NSData alloc] initWithContentsOfURL：[NSURL URLWithString：@Link]];

现在，我想在下载过程中放置​​一个进度条。我查了各种各样的帖子，但我无法确切地知道如何做到这一点。

Now, I would like to put a progress bar while the download is going on. I checked various posts but i am not able to find out how to do it exactly.

请帮助我!!

推荐答案

添加

expectedBytes = [response expectedContentLength];

到

-(void)connection:(NSURLConnection*)connection didReceiveResponse:(NSURLResponse*)response

并添加

float progress = ((_bytesReceived/(float)_expectedBytes)*100)/100;

到

-(void)connection:(NSURLConnection*)connection didReceiveData:(NSData*)data

然后setPr ogress：在你的UIProgressView上

then setProgress: on your UIProgressView

来自：
http://www.developers-life.com/progress-bar-download-file-on-iphone.html

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