如何在Xcode项目中添加声音效果？

Question

This is my code right now. I am trying to add sound effects when a button is pressed.

#import <AudioToolbox/AudioToolbox.h>

- (void)threeBombExplosion
{
    NSString *soundPath = [[NSBundle mainBundle] pathForResource:@"3Explosions" ofType:@"mp3"];
    NSURL *threeExplosionsURL = [NSURL fileURLWithPath:soundPath];
    AudioServicesCreateSystemSoundID(CFBridgingRetain(threeExplosionsURL),&_threeExplosionsID);

}

and I am calling this on the function I want it to be executed (UIButton Action).

AudioServicesPlaySystemSound(_threeExplosionsID);

Answer 1

Firstly, thats not how you should be calling your mp3 file, you should be using the av audio player object.

NSString *path = [[NSBundle mainBundle] pathForResource:@"3Explosions" ofType:@"mp3"];
NSURL *soundUrl = [NSURL fileURLWithPath:path];
// Create audio player object and initialize with URL to sound
self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:soundUrl error:nil];

Make sure you have strong reference to it, otherwise it might get removed in memory

@property (strong,nonatomic) AVAudioPlayer *audioPlayer;

I would check that the method is being called when the button is being pressed. If you have a touchupinside action, then your method will be:

-(IBAction)buttonPressed {
    [self threeBombExplosion];
}

If that is not working, you should check that the resource is being added to your project, in Xcode you need to make sure you have added it.

In my project i created a subfolder called resources and then an additional one called sounds and placed it neatly in there.