StackOverflow2013

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POHow to create a audioplayer application like pandora app?
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copied!<p>I am created an application which play multiple audio files from locally. Audio files are long. Audio player has following options for the user</p> <ul> <li>Forward,</li> <li>Rewind,</li> <li>Next Track,</li> <li>Previous Track,</li> </ul> <p>I am planning to use AvAudioPlayer so that i can play an audio with long time. When i am changing the audio file ie pressing next track audio. The audioplayer instance is not getting released. This problem is appearing some times only. Please help me..!! I am help less.. </p> <p>Next Track Button IBAction Method</p> <pre><code>- (IBAction) nextTrackPressed { [audioPlay stopAudio]; if (audioPlay) { audioPlay = nil; [audioPlay release]; } appDelegate.trackSelected += 1; [self intiNewAudioFile]; [self play]; } Initializing audio file through below method -(void) intiNewAudioFile { NSAutoreleasePool *subPool = [[NSAutoreleasePool alloc] init]; NSString *filePath = [[NSString alloc] init]; trackObject = [appDelegate.trackDetailArray objectAtIndex:appDelegate.trackSelected]; NSLog(@"%@",trackObject.trackName); // Get the file path to the song to play. filePath = [[NSBundle mainBundle] pathForResource:trackObject.trackName ofType:@"mp3"]; // Convert the file path to a URL. NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:filePath]; if (audioPlay) { audioPlay = nil; [audioPlay release]; } audioPlay = [[AudioPlayerClass alloc] init]; [audioPlay initAudioWithUrl:fileURL]; [filePath release]; [fileURL release]; [subPool release]; } </code></pre> <p>AudioPlayerClass Implementation</p> <pre><code>#import "AudioPlayerClass.h" @implementation AudioPlayerClass - (void) initAudioWithUrl: (NSURL *) url { curAudioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil]; [curAudioPlayer setDelegate:self]; [curAudioPlayer prepareToPlay]; } - (void) playAudio { [curAudioPlayer play]; } - (void) pauseAudio { [curAudioPlayer pause]; } - (void) stopAudio { [curAudioPlayer stop]; } - (BOOL) isAudioPlaying { return curAudioPlayer.playing; } - (void) setAudiowithCurrentTime:(NSInteger) time { curAudioPlayer.currentTime = time; } - (NSInteger) getAudioFileDuration { return curAudioPlayer.duration; } - (NSInteger) getAudioCurrentTime { return curAudioPlayer.currentTime; } - (void) releasePlayer { [curAudioPlayer release]; } - (void)dealloc { [curAudioPlayer release]; [super dealloc]; } @end </code></pre>

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