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POApplication crashed while importing songs from Ipod library in Iphone for iOs 5.0
 

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  1. POApplication crashed while importing songs from Ipod library in Iphone for iOs 5.0
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    <p>Hello i am using below framworks,</p> <pre><code>#import &lt;MediaPlayer/MediaPlayer.h&gt; #import &lt;AudioToolbox/AudioToolbox.h&gt; #import &lt;AVFoundation/AVFoundation.h&gt; </code></pre> <p>In one of button event i have implemented below code to open Library.</p> <pre><code> MPMediaPickerController *mediaPicker = [[MPMediaPickerController alloc] initWithMediaTypes:MPMediaTypeMusic]; mediaPicker.delegate = self; mediaPicker.allowsPickingMultipleItems = YES; // this is the default [self presentModalViewController:mediaPicker animated:YES]; [mediaPicker release]; </code></pre> <p>And in delegate methods of MPMediaPickerController implemented code as below</p> <pre><code>#pragma mark MPMediaPickerController delegate methods - (void)mediaPicker: (MPMediaPickerController *)mediaPicker didPickMediaItems:(MPMediaItemCollection *)mediaItemCollection { // We need to dismiss the picker [self dismissModalViewControllerAnimated:YES]; // Assign the selected item(s) to the music player and start playback. counterIpod = [mediaItemCollection.items count]; totalcollection = counterIpod; if (totalcollection &gt; 10) { NSString *str = [NSString stringWithFormat:@"BRL Only supports importing 10 songs at a time"]; UIAlertView *connectionAlert = [[UIAlertView alloc] initWithTitle:@"Message !" message:str delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [connectionAlert show]; [connectionAlert release]; } else { [self performSelector:@selector(saveMediaItem:) withObject:mediaItemCollection afterDelay:0.1]; //[self saveMediaItem:mediaItemCollection]; //[self showLoadingView]; } } - (void)mediaPickerDidCancel:(MPMediaPickerController *)mediaPicker { // User did not select anything // We need to dismiss the picker [self dismissModalViewControllerAnimated:YES]; } #pragma mark Sace Item Collection to documentsDirectory -(void)saveMediaItem:(MPMediaItemCollection *)mediaItemCollection { for (int i = 0; i &lt; [mediaItemCollection.items count]; i++) { [self exportAssetAsSourceFormat:[[mediaItemCollection items] objectAtIndex:i]]; NSLog(@"for loop : %d", i); } NSArray *itemsArray1 = appDelegate.mediaItemCollection1.items; MPMediaItemCollection *mediaItemCollection2; if ([itemsArray1 count] != 0) { mediaItemCollection2 = [self collectionByAppendingCollection:mediaItemCollection]; } else { mediaItemCollection2 = mediaItemCollection; } [self saveMediaItemAfterDeletting:mediaItemCollection2]; } -(void)saveMediaItemAfterDeletting:(MPMediaItemCollection *)mediaItemCollection { NSMutableData* data = [[NSMutableData alloc] init]; NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:data]; [archiver encodeObject:mediaItemCollection forKey:@"my_playlist"]; [archiver finishEncoding]; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *filePath = [NSString stringWithFormat:@"%@/playlist.data", documentsDirectory]; NSLog(@"file path = %@", filePath); [data writeToFile:filePath atomically:YES]; if ([[NSFileManager defaultManager] fileExistsAtPath:filePath]){ NSLog(@"file exists : ===========&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;"); } else { NSLog(@"file doesn't exist"); } //NSLog(@"archiving playlist success = %d", success); [archiver release]; [data release]; [self UpdateMediaCollection]; } -(NSString*) getExtension:(MPMediaItem *)item { // [self showLoadingView]; NSURL *assetURL = [item valueForProperty:MPMediaItemPropertyAssetURL]; AVURLAsset *songAsset = [AVURLAsset URLAssetWithURL:assetURL options:nil]; // JP // AVAssetExportSession *exportSession = [[AVAssetExportSession alloc] // initWithAsset:songAsset // presetName:AVAssetExportPresetPassthrough]; NSArray *tracks = [songAsset tracksWithMediaType:AVMediaTypeAudio]; AVAssetTrack *track = [tracks objectAtIndex:0]; id desc = [track.formatDescriptions objectAtIndex:0]; const AudioStreamBasicDescription *audioDesc = CMAudioFormatDescriptionGetStreamBasicDescription((CMAudioFormatDescriptionRef)desc); FourCharCode formatID = audioDesc-&gt;mFormatID; //exportAudioMix.inputParameters = [NSArray arrayWithObject:exportAudioMixInputParameters]; //exportSession.audioMix = exportAudioMix; NSString *fileType = nil; NSString *ex = nil; switch (formatID) { case kAudioFormatLinearPCM: { UInt32 flags = audioDesc-&gt;mFormatFlags; if (flags &amp; kAudioFormatFlagIsBigEndian) { fileType = @"public.aiff-audio"; ex = @"aif"; } else { fileType = @"com.microsoft.waveform-audio"; ex = @"wav"; } } break; case kAudioFormatMPEGLayer3: fileType = @"com.apple.quicktime-movie"; ex = @"mp3"; break; case kAudioFormatMPEG4AAC: fileType = @"com.apple.m4a-audio"; ex = @"m4a"; break; case kAudioFormatAppleLossless: fileType = @"com.apple.m4a-audio"; ex = @"m4a"; break; default: break; } return ex; } #pragma mark Covert Item separate item collection and store songs into directory - (void)exportAssetAsSourceFormat:(MPMediaItem *)item { // [self showLoadingView]; NSLog(@"export asset called"); NSURL *assetURL = [item valueForProperty:MPMediaItemPropertyAssetURL]; NSLog(@"\n&gt;&gt;&gt;&gt; assetURL : %@",[assetURL absoluteString]); AVURLAsset *songAsset = [AVURLAsset URLAssetWithURL:assetURL options:nil]; // JP AVAssetExportSession *exportSession = [[AVAssetExportSession alloc] initWithAsset:songAsset presetName:AVAssetExportPresetPassthrough]; NSArray *tracks = [songAsset tracksWithMediaType:AVMediaTypeAudio]; AVAssetTrack *track = [tracks objectAtIndex:0]; id desc = [track.formatDescriptions objectAtIndex:0]; const AudioStreamBasicDescription *audioDesc = CMAudioFormatDescriptionGetStreamBasicDescription((CMAudioFormatDescriptionRef)desc); FourCharCode formatID = audioDesc-&gt;mFormatID; //exportAudioMix.inputParameters = [NSArray arrayWithObject:exportAudioMixInputParameters]; //exportSession.audioMix = exportAudioMix; NSString *fileType = nil; NSString *ex = nil; switch (formatID) { case kAudioFormatLinearPCM: { UInt32 flags = audioDesc-&gt;mFormatFlags; if (flags &amp; kAudioFormatFlagIsBigEndian) { fileType = @"public.aiff-audio"; ex = @"aif"; } else { fileType = @"com.microsoft.waveform-audio"; ex = @"wav"; } } break; case kAudioFormatMPEGLayer3: fileType = @"com.apple.quicktime-movie"; ex = @"mp3"; break; case kAudioFormatMPEG4AAC: fileType = @"com.apple.m4a-audio"; ex = @"m4a"; break; case kAudioFormatAppleLossless: fileType = @"com.apple.m4a-audio"; ex = @"m4a"; break; default: break; } exportSession.outputFileType = fileType; NSString *fileName = nil; fileName = [NSString stringWithString:[item valueForProperty:MPMediaItemPropertyTitle]]; fileName = [[fileName stringByAppendingString:@"-"] stringByAppendingString:[item valueForProperty:MPMediaItemPropertyArtist]]; NSArray *fileNameArray = nil; fileNameArray = [fileName componentsSeparatedByString:@" "]; fileName = [fileNameArray componentsJoinedByString:@""]; NSLog(@"&gt;&gt;&gt;&gt;&gt; fileName = %@", fileName); NSString *docDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; NSString *filePath = [[docDir stringByAppendingPathComponent:fileName] stringByAppendingPathExtension:ex]; NSLog(@"filePath = %@", filePath); if ([[NSFileManager defaultManager] fileExistsAtPath:filePath]) { //NSLog(@"file exist::::::::::==============&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;"); counterIpod--; if(counterIpod == 0) { //[self showAlertView]; //[self hideLoadingView]; } NSString *str = [NSString stringWithFormat:@"Loading %d of %d Beats", totalcollection - counterIpod ,totalcollection]; [lbl performSelectorOnMainThread:@selector(setText:) withObject:str waitUntilDone:NO]; //NSLog(@"loading string : %@", str); return; } //NSLog(@"file not exist ===========&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;"); // ------------------------------------- int fileNumber = 0; NSString *fileNumberString = nil; NSString *fileNameWithNumber = nil; while ([[NSFileManager defaultManager] fileExistsAtPath:filePath]) { fileNumber++; fileNumberString = [NSString stringWithFormat:@"-%02d", fileNumber]; fileNameWithNumber = [fileName stringByAppendingString:fileNumberString]; filePath = [[docDir stringByAppendingPathComponent:fileNameWithNumber] stringByAppendingPathExtension:ex]; //NSLog(@"filePath = %@", filePath); } // ------------------------------------- myDeleteFile(filePath); exportSession.outputURL = [NSURL fileURLWithPath:filePath]; [exportSession exportAsynchronouslyWithCompletionHandler:^{ if (exportSession.status == AVAssetExportSessionStatusCompleted) { NSLog(@"export session completed"); counterIpod--; NSString *str = [NSString stringWithFormat:@"Loading %d of %d Beats", totalcollection - counterIpod ,totalcollection]; //[self performSelector:@selector(setLabelText:) withObject:str afterDelay:0.02]; [lbl performSelectorOnMainThread:@selector(setText:) withObject:str waitUntilDone:NO]; NSLog(@"loading string : %@", str); if(counterIpod == 0) { //[self showAlertView]; //[self hideLoadingView]; } } else { NSLog(@"export session error"); counterIpod--; NSString *str = [NSString stringWithFormat:@"Loading %d of %d Beats", totalcollection - counterIpod ,totalcollection]; [lbl performSelectorOnMainThread:@selector(setText:) withObject:str waitUntilDone:NO]; //return NO; if(counterIpod == 0) { //[self showAlertView]; //[self hideLoadingView]; } } [exportSession release]; }]; //[appDelegate hideLoadingView]; } #pragma mark method to delete file from document directory void myDeleteFile (NSString* path) { // NSLog(@"file path delete file :::::::::: %@", path); if ([[NSFileManager defaultManager] fileExistsAtPath:path]) { NSError *deleteErr = nil; [[NSFileManager defaultManager] removeItemAtPath:path error:&amp;deleteErr]; if (deleteErr) { NSLog (@"Can't delete %@: %@", path, deleteErr); } } } </code></pre> <p>Above code work without any error on iOs 4.0 or later version but for iOs 5.0 is crashes on device, i can't resolve these issues since last 15 days.</p> <p>Thanks in advance for Help.</p>
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    1. USNilesh Kikani
    1. USNilesh Kikani
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      1. POApplication crashed while importing songs from Ipod library in Iphone for iOs 5.0
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      1. POApplication crashed while importing songs from Ipod library in Iphone for iOs 5.0
      1. USshanegao
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      1. POApplication crashed while importing songs from Ipod library in Iphone for iOs 5.0
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      1. VTUpMod
    1. COTry cutting your code down to what is really relevant to the problem.
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      1. POApplication crashed while importing songs from Ipod library in Iphone for iOs 5.0
      1. USjbat100
    2. COBut if cut off code then we can't get what's reason for crash. I am trying to make get each song in it's original format and every line is important to test.
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      1. POApplication crashed while importing songs from Ipod library in Iphone for iOs 5.0
      1. USNilesh Kikani
    3. COHave you got some crash logs or traces?
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      1. POApplication crashed while importing songs from Ipod library in Iphone for iOs 5.0
      1. USjbat100
 

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