ASIHTTPRequest UIProgressView 不起作用

Question

我是 Xcode 的新手，对 UIProgressView 有疑问。 我找到了一些代码，但我不太明白。你能解释一下为什么UIProgressView在完成后没有关闭吗？

- (IBAction)Download:(id)sender
{
    NSURL *url = [NSURL URLWithString:@"http://db.tt/5WP2pia"];
    ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
    [request setDelegate:self];
    [request startAsynchronous];
    progressView = [[UIProgressView alloc]
                          initWithFrame:CGRectMake(30.0f, 80.0f, 225.0f, 90.0f)];
    UIAlertView *progressAlert =
            [[UIAlertView alloc] initWithTitle: @"Download..." 
                                       message: @"Please wait..."
                                      delegate: self
                             cancelButtonTitle: nil 
                             otherButtonTitles: nil];
    [progressAlert addSubview:progressView];
    [progressView setProgressViewStyle: UIProgressViewStyleBar];
    [request setDownloadDestinationPath:@"/var/root/osk.rar"];
    [request setDownloadProgressDelegate:progressView];
    [progressAlert show];
    [progressAlert release];
}

Answer 1

1. 您必须在ASIHTTPRequest 完成后手动关闭警报。 progressView != progressAlert
2. 不要使用ASIHTTPRequest