progress bar when downloading image

Question

How would I go about adding a progress bar for downloading a large image, or any file for that matter? here is my code:

NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
                                                             NSUserDomainMask, YES);

        NSString *docsPath = [paths objectAtIndex:0];
        NSString *downloadPath = [[[NSString alloc]initWithFormat:@"http://www.zzz.com/%@.jpg",chartFileName]autorelease];
        NSString *savePath = [[[NSString alloc]initWithFormat:@"%@/%@.jpg",docsPath, chartFileName]autorelease];
        NSURL *url = [[NSURL alloc]initWithString:downloadPath];
        NSData *downloadedChartData = [NSData dataWithContentsOfURL:url];
        [url release];
        [downloadedChartData writeToFile:savePath atomically:YES];

score 1 · Accepted Answer · edited May 23 '17 at 12:19

1

You could override connection:didReceiveData: in your NSURLConnection call. See here for more:

How to integrate NSURLConnection with UIProgressView?

edited May 23 '17 at 12:19

Community

1
1

answered Jun 24 '10 at 21:47

Joost Schuur

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There is no explicit NSURLConnection call in "[NSData dataWithContentsOfURL:]", can you give a pointer to a full download-with-progress implementation that starts with just the URLstring? – Bogatyr Feb 17 '11 at 10:11
or ready solution http://www.developers-life.com/progress-bar-download-file-on-iphone.html – Volodymyr B. Jul 06 '12 at 16:17

score 0 · Answer 2 · answered Jun 24 '10 at 19:15

0

Run a selector in the background that checks the image's download size, and compares it against the required size. Then set the % of the progress bar to downloaded/required.

answered Jun 24 '10 at 19:15

jrtc27

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progress bar when downloading image

2 Answers2