iOS tutorial: play sound

AudioToolbox in iOS is suitable for playing short system sounds in apps (if you need another types of sounds read this). To play sound in iOS app with AudioToolbox you have to do the following:

1. Add AudioToolbox framework to your application

Click on your project, navigate to Targets -> Build Phases -> Link Binary With Libraries -> Click ‘+’ sign -> find AudioToolbox.framework

Adding AudioToolbox framework

2. Import AudioToolbox.h in your header file

just add this import statement:

#import <AudioToolbox/AudioToolbox.h>

3. Add audio files to the project folder

Drag audio files to the project folder:

Add audio files

4. Add SystemSoundID iVar

In implementation file add variable in the @interface section at the beginning of file. You can add more variables if you need more audio files to be played.

@interface MyViewController (){
    SystemSoundID soundClick;
}

5. Initialize audio files

You can init files in various places. In my example I do it in viewDidLoad:

- (void)viewDidLoad {
    [super viewDidLoad];
    //find URL to audio file
    NSURL *clickSound   = [[NSBundle mainBundle] URLForResource: @"click" withExtension: @"wav"];
    //initialize SystemSounID variable with file URL
    AudioServicesCreateSystemSoundID (CFBridgingRetain(clickSound), &soundClick);
}

6. Play audio file

Audio is played with one line invocation. Put it anywhere, where you need to play sound.

AudioServicesPlaySystemSound(soundClick);

7. Dispose system sound

Some clanup in viewDidUnload:

- (void)viewDidUnload {
	AudioServicesDisposeSystemSoundID(soundClick);
}

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