Question

NSString *musicPath = [[NSBundle mainBundle] pathForResource:@"ding" ofType:@"mp3"];
if (musicPath)
{
    if(TapSoud)
    { 
        [TapSoud release];
        TapSoud = nil;
    }
    TapSoud = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:musicPath] error:nil];
}

[TapSoud setDelegate:self];
[TapSoud prepareToPlay];
[TapSoud play];


NSString *musicPath1 = [[NSBundle mainBundle] pathForResource:@"roadrunner" ofType:@"mp3"];
if (musicPath1)
{
    if(MatchSoud)
    { 
        [MatchSoud release];
        MatchSoud = nil;
    }
    MatchSoud = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:musicPath1] error:nil];
}

[MatchSoud setDelegate:self];
[MatchSoud prepareToPlay];

NSString *musicPath2 = [[NSBundle mainBundle] pathForResource:@"Wrong Answer" ofType:@"wav"];
if (musicPath2)
{
    if(WrongMatchSoud)
    { 
        [WrongMatchSoud release];
        WrongMatchSoud = nil;
    }
    WrongMatchSoud = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:musicPath2] error:nil];
}

[WrongMatchSoud setDelegate:self];
[WrongMatchSoud prepareToPlay];

This code works properly in the simulator, but generates no sound on the device. What is the problem here?

Answer 1

The most likely problem is that the audio files are missing either in the project or at resource copying stage. The simulator stores previously copied resources even if removed from the project until the application is removed completely from the simulator.

Make sure musicPath, musicPath1 and musicPath2 are not empty and valid.