StackOverflow2013

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copied!<p>I've just figured out where my problem is, but not really understand why.</p> <p>In my <code>ImageDownloader</code> class, I set up a runloop with <code>done</code> and <code>currentRunLoop</code> variables. In the main method, I have a while loop for forcing the <code>currentRunLoop</code> run.</p> <p>As I remove those "runLoop" stuffs, the app runs smoothly on both iOS6 and iOS5.</p> <p>So change the entire <code>ImageDownloader.m</code> with these lines then it works (I commented out some useless (say harmful) lines):</p> <pre><code>// // ImageLoader.m // DownloadImagesTableView // // Created by Viet Ta Quoc on 6/25/13. // Copyright (c) 2013 Viet Ta Quoc. All rights reserved. // #import "ImageDownloader.h" @implementation ImageDownloader @synthesize downloadData,delegate,queue,done,customTag; NSRunLoop *currentRunLoop; -(void)downloadImageWithURL:(NSString *)imageUrl queue:(NSOperationQueue*)opQueue andTag:(int)tag{ self.customTag= tag; self.queue = opQueue; // self.done = NO; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:imageUrl] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:30]; NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:NO]; [connection start]; // currentRunLoop = [NSRunLoop currentRunLoop]; NSLog(@"Start downloading image %d...",customTag); } -(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{ NSLog(@"Received response..."); downloadData=[[NSMutableData alloc] initWithLength:0]; expectedDataLength=[response expectedContentLength]; NSLog(@"Image %d size: %lld kb",customTag,[response expectedContentLength]/1024); } -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{ float receivedLenght = [data length]; receivedDataLength=(receivedDataLength+receivedLenght); float progress=(float)receivedDataLength/(float)expectedDataLength; [delegate updateProgess:progress andIndex:[NSIndexPath indexPathForRow:customTag-100 inSection:0]]; [self.downloadData appendData:data]; // NSLog(@"Percentage of data received of tag %d: %f %%",self.customTag,progress*100); } -(void)connectionDidFinishLoading:(NSURLConnection *)connection{ [delegate finishedDownloadingImage:downloadData andTag:customTag]; // done = YES; } -(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{ UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"Warning" message:@"Network Connection Failed?" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:nil, nil]; // NSLog(@"%@",[error debugDescription]); NSLog(@"Connection failed! Error - %@ %@",[error localizedDescription],[[error userInfo] objectForKey:NSURLErrorFailingURLStringErrorKey]); [alert show]; } -(void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge{ NSLog(@"Got here *(*&(**&(*&(*&(*&(*&(*&(*&(*&(*&(*&(*&(*&(*&(*&(*&(*&(*&"); } -(void)main{ // do{ //// NSLog(@"Running....1"); // [currentRunLoop runUntilDate:[NSDate distantFuture]]; // // [currentRunLoop run]; // } while (!done); // [currentRunLoop runUntilDate:[NSDate dateWithTimeIntervalSinceNow:0.01]]; } @end </code></pre> <p>Thank you guys for your supports.</p> <p><strong>==================================================================================</strong></p> <p><strong>P/s: for anyone who interested in this problem, I update here my entire solution: <a href="https://dl.dropboxusercontent.com/u/15628608/Public%20files/DownloadImageByOperation_new.zip" rel="nofollow">DownloadImage_Final</a></strong></p>

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