CODEWITHSUNDEEP
iphoneobjective-casihttprequestuiprogressview
max_
max_

Reputation: 24521

How to track the progress of a download using ASIHTTPRequest (ASYNC)

I am currently using an asynchronous call to my API (I setup) on my site. I am using ASIHTTPRequest's setDownloadProgressDelegate with a UIProgressView. However I don't know how I can call a selector (updateProgress) which will set a CGFloat 'progress' to the progressView's progress. I tried the following, but both the progresses were zero. Please can you tell me how I can get this working?

(in some method)

ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:[NSURL URLWithString:[url stringByAppendingFormat:@"confidential"]]];
    [request setDownloadProgressDelegate:progressView];
    [NSTimer scheduledTimerWithTimeInterval:1.0f/60.0f target:self selector:@selector(updateProgress:) userInfo:nil repeats:YES];
    [request setCompletionBlock:^{~100 lines of code}];
    [request setFailedBlock:^{~2 lines of code :) }];
    [request startAsynchronous];

- (void) updateProgress:(NSTimer *)timer {
    if (progressView.progress < 1.0) {
        currentProgress = progressView.progress;
        NSLog(@"currProg: %f --- progressViewProg: %f", currentProgress, progressView.progress);
    }
    else {
        [timer invalidate];
    }
    return;
}

Upvotes: 4

Views: 8108

Answers (3)

JosephH
JosephH

Reputation: 37505

For people still finding this answer: Please note ASI is highly deprecated, you should use NSURLSession or ASIHTTPRequest instead.

One way to achieve what you want would be to set the downloadProgressDelegate to be your own class and implement setProgress:. In this implementation, update your progress variable and then call [progressView setProgress:];

Or in code, set up the request's download progress delegate:

[request setDownloadProgressDelegate:self];

and then add the method to your class:

- (void)setProgress:(float)progress
{
    currentProgress = progress;
    [progressView setProgress:progress];
}

Upvotes: 7

VenoMKO
VenoMKO

Reputation: 3294

Try to add in to your request:

[request setShowAccurateProgress:YES];

It won't help you to call updateProgress, ASIHTTPRequest will change progress indicator itself.

Upvotes: 4

bbum
bbum

Reputation: 162722

BTW: NS*Connection appears to be quite a bit faster than ASI* when downloading stuff.

In any case, the example on this page implies that you don't need to manually "copy" the value from the the download object to the progress view object.

In fact, your timer based code is getting the progress from the progress view which should be showing the progress already. There should be no need for a timer in this code at all, if I understand ASIHTTP* correctly.

Upvotes: 0

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