StackOverflow2013

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copied!<p>i show audio list on table view when i click on audio tableview then that song i hold in nsdata for upload</p> <pre><code>-(void)startVideoStart:(NSNumber*)number { MPMediaItem *song = [miPodSongsArray objectAtIndex:[number intValue]]; songTitle = [song valueForProperty: MPMediaItemPropertyTitle]; NSURL *url = [song valueForProperty:MPMediaItemPropertyAssetURL]; [NSThread detachNewThreadSelector:@selector(loadAudioInBackground:) toTarget:self withObject:url]; [self performSelector:@selector(UploadSong:) withObject:songDict afterDelay:10]; } -(void)loadAudioInBackground:(NSURL*)url { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc]init]; NSLog(@"%@",url); AVURLAsset *songAsset = [AVURLAsset URLAssetWithURL: url options:nil]; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSLog (@"compatible presets for songAsset: %@",[AVAssetExportSession exportPresetsCompatibleWithAsset:songAsset]); AVAssetExportSession *exporter = [[AVAssetExportSession alloc] initWithAsset: songAsset presetName: AVAssetExportPresetPassthrough]; NSLog (@"created exporter. supportedFileTypes: %@", exporter.supportedFileTypes); exporter.outputFileType = @"com.apple.m4a-audio"; NSString *exportFile = [documentsDirectory stringByAppendingPathComponent: @"item.m4a"]; NSError *error1; if([[NSFileManager defaultManager] fileExistsAtPath:exportFile]) { [[NSFileManager defaultManager] removeItemAtPath:exportFile error:&error1]; } NSURL* exportURL = [[NSURL fileURLWithPath:exportFile] retain]; exporter.outputURL = exportURL; // do the export [exporter exportAsynchronouslyWithCompletionHandler:^{ NSData *data1 = [NSData dataWithContentsOfFile: [documentsDirectory stringByAppendingPathComponent: @"item.m4a"]]; //NSLog(@"%@",data1); if (songDict) { [songDict release]; songDict=nil; } songDict= [[NSMutableDictionary alloc]init]; [songDict setValue:data1 forKey:@"AudioData"]; [songDict setValue:songTitle forKey:@"AudioName"]; [songDict setValue:[[mAppDelegate.userInfoArray objectAtIndex:1]valueForKey:@"user_id"] forKey:@"user_id"]; //NSLog(@"%@",infoDict); mAppDelegate.uploadType = @"Audio"; int exportStatus = exporter.status; switch (exportStatus) { case AVAssetExportSessionStatusFailed: { // log error to text view NSError *exportError = exporter.error; NSLog (@"AVAssetExportSessionStatusFailed: %@", exportError); // errorView.text = exportError ? [exportError description] : @"Unknown failure"; //errorView.hidden = NO; break; } case AVAssetExportSessionStatusCompleted: { NSLog (@"AVAssetExportSessionStatusCompleted"); break; } case AVAssetExportSessionStatusUnknown: { NSLog (@"AVAssetExportSessionStatusUnknown"); break; } case AVAssetExportSessionStatusExporting: { NSLog (@"AVAssetExportSessionStatusExporting"); break; } case AVAssetExportSessionStatusCancelled: { NSLog (@"AVAssetExportSessionStatusCancelled"); break; } case AVAssetExportSessionStatusWaiting: { NSLog (@"AVAssetExportSessionStatusWaiting"); break; } default: { NSLog (@"didn't get export status"); break; } } }]; [pool release]; } </code></pre>

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