UIActivityIndicator problem when downloading from URL
<p>i trying to download the picture from URL, and use a activity indicator animating to present the file is downloading, however, it is not working as my indicator wont animating when i call this download function,can somebody tell me why?        </p>

<pre><code>-(void)download{
    [indicator startAnimating];
    NSString *downloadPath=@"http://www.xyz.com/path/pic.jpg; 
    NSData *downloadData=[NSData dataWithContentsOfURL:[ NSURL  URLWithString:downloadPath]];
    if(downloadData){
           //do something
          [indicator stopAnimating];
     }
      else{
        //do something
        [indicator stopAnimating];
          }
</code></pre>

<p>}</p>
