Try to set the audio session:
#import <AVFoundation/AVAudioSession.h>
-(void) viewDidLoad
{
[super viewDidLoad];
[self setAudioSession];
}
-(void) setAudioSession
{
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
NSError *sessionError = nil;
BOOL success = [audioSession setCategory:AVAudioSessionCategoryPlayback error:&sessionError];
if (!success)
{
NSLog(@"Setting Audio Session Category Error: %@", sessionError);
}
success = [audioSession setActive:YES error:&sessionError];
if (!success)
{
NSLog(@"Setting Audio Session Active Error: %@", sessionError);
}
}