AVAudio layer is not playing the sound in ios - ios

Question

Hi in my application I am using UILocalNotifications and AVAudiopPlayer to play a song. When a notification comes I am trying to play a song when I select notification alert. Here is the code, I am getting the sound but isplaying property is setting as YES.
In AppDelegate:
-(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
MainViewController *main=[[MainViewController alloc]init];
[main playSong:notification.soundName];
}
-(void)playSong:(NSString *)songName
{
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:songName ofType:#"mp3"];
NSURL *soundFileURL = [NSURL fileURLWithPath:soundFilePath];
[_audioPlayer setDelegate:self];
_audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:soundFileURL error:nil];
_audioPlayer.numberOfLoops = -1; //Infinite
[_audioPlayer prepareToPlay];
[_audioPlayer play];
}

Answer 1

Replace your code with following code and then try it may be help you.
-(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
MainViewController *main=[[MainViewController alloc]init];
[main playSong:notification.soundName];
}
-(void)playSong:(NSString *)songName
{
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:songName ofType:#"mp3"];
NSURL *soundFileURL = [NSURL fileURLWithPath:soundFilePath];
[_audioPlayer setDelegate:self];
_audioPlayer = [[AVAudioPlayer alloc]initWithContentsOfURL: soundFileURL fileTypeHint:AVFileTypeMPEGLayer3 error:&errorAudio];
_audioPlayer.numberOfLoops = -1; //Infinite
[_audioPlayer prepareToPlay];
[_audioPlayer play];
}