How to play multiple audio files in a row with AVAudioPlayer?

Question

I have 5 songs in my app that I would like to play one after the other with AVAudioPlayer.

Are there any examples of this? How can I accomplish this?

Any ex

Answer 1

Instead of AVAudioPlayer you can use AVQueuePlayer which suits this use case better as suggested by Ken. Here is a bit of code you can use:

@interface AVSound : NSObject 

@property (nonatomic, retain) AVQueuePlayer* queuePlayer;

- (void)addToPlaylist:(NSString*)pathForResource ofType:(NSString*)ofType;
- (void)playQueue;

@end

@implementation AVSound
- (void)addToPlaylist:(NSString*)pathForResource ofType:(NSString*)ofType
{
    // Path to the audio file
    NSString *path = [[NSBundle mainBundle] pathForResource:pathForResource ofType:ofType];

    // If we can access the file...
    if ([[NSFileManager defaultManager] fileExistsAtPath:path])
    {

        AVPlayerItem *item = [[AVPlayerItem alloc] initWithURL:[NSURL fileURLWithPath:path]];

        if (_queuePlayer == nil) {
            _queuePlayer = [[AVQueuePlayer alloc] initWithPlayerItem:item];
        }else{
            [_queuePlayer insertItem:item afterItem:nil];
        }
    }

}


- (void)playQueue
{
    [_queuePlayer play];
}
@end

Then to use it: In your interface file:

@property (strong, nonatomic) AVSound *pageSound;

In your implementation file:

- (void)addAudio:(Book*)book pageNum:(int)pageNum
{

    NSString *soundFileEven = [NSString stringWithFormat:@"%02d", pageNum-1];
    NSString *soundPathEven = [NSString stringWithFormat:@"%@_%@", book.productId,     soundFileEven];
    NSString *soundFileOdd = [NSString stringWithFormat:@"%02d", pageNum];
    NSString *soundPathOdd = [NSString stringWithFormat:@"%@_%@", book.productId, soundFileOdd];

    if (_pageSound == nil) {
        _pageSound = [[AVSound alloc]init];
        _pageSound.player.volume = 0.5;
    }

    [_pageSound clearQueue];

    [_pageSound addToPlaylist:soundPathEven ofType:@"mp3"];
    [_pageSound addToPlaylist:soundPathOdd ofType:@"mp3"];
    [_pageSound playQueue];
}

HTH