CODEWITHSUNDEEP
iphoneasynchronousdownloadtableviewuiprogressview
user717452
user717452

Reputation: 111

Add UIProgressView to a TableView Cell

I have an app that presents Table View of different files. I have it set up to Asynchronously download, and would like to have the selected cell show a progress bar. I've looked online all afternoon, and everything I have found so far seems real incomplete on how to do this. Here is my code so far for the download, and set up to have a progressview show download status.

Code:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
RSSEntry *entry = [_allEntries objectAtIndex:indexPath.row];
NSURL *url = [NSURL URLWithString:entry.articleUrl];    
self.nameit = entry.articleTitle;
NSURLRequest *theRequest = [NSURLRequest requestWithURL:url         cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:60];   
receivedData = [[NSMutableData alloc] initWithLength:0];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self     startImmediately:YES];
}
- (void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
progress.hidden = NO;
[receivedData setLength:0];
expectedBytes = [response expectedContentLength];
}

- (void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
[receivedData appendData:data];
float progressive = (float)[receivedData length] / (float)expectedBytes;
[progress setProgress:progressive];


}

 - (void) connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
[connection release];
}

- (NSCachedURLResponse *) connection:(NSURLConnection *)connection willCacheResponse:    (NSCachedURLResponse *)cachedResponse {
  return nil;
}

- (void) connectionDidFinishLoading:(NSURLConnection *)connection {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *pdfPath = [documentsDirectory stringByAppendingPathComponent:[currentURL stringByAppendingString:@".mp3"]];
NSLog(@"Succeeded! Received %d bytes of data",[receivedData length]);
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
[receivedData writeToFile:pdfPath atomically:YES];
progress.hidden = YES;
[connection release];
}

Upvotes: 0

Views: 6397

Answers (1)

Nikita Pestrov
Nikita Pestrov

Reputation: 5966

First, add an UIProgressView variable to you interface, so that you can reference to it from any method in your class.

Then, when user selects it. you have to initialize it

 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{

    UITableViewCell *cell =[tableView cellForRowAtIndexPath:indexPath];

    progress = [[UIProgressView alloc]initWithProgressViewStyle:UIProgressViewStyleBar];
    progress.frame = CGRectMake(10, 10, 30, 30);
    progress.progress = 0.0;

    progress.center = CGPointMake(23,21);

    [cell.contentView addSubview:progress];


}

Now you can update a progressBar as the file downloads and after it just send[progress removeFromSuperView]

That's it!

Upvotes: 6

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