iOS short sound playback , AudioServicesPlaySystemSound and AudioServicesPlaySystemSoundWithCompletion

VLAudioSessionControl

#import "VLAudioSoundControl.h"

@implementation VLAudioSoundControl

+ (void)RingTone:(NSString *)ringName type:(NSString *)type {
   
    [self pauseBackgroundSoundWithError:nil];
    
    SystemSoundID send_voice_sound_id = 0;
    //Load sound file
    NSString *path = [[NSBundle mainBundle] pathForResource:ringName ofType:type];
    //Register the sound to the system
    AudioServicesCreateSystemSoundID((__bridge CFURLRef)[NSURL fileURLWithPath:path],&send_voice_sound_id);
    
    if ([[UIDevice currentDevice].systemVersion floatValue] >= 9.0) {
        
        AudioServicesPlaySystemSoundWithCompletion(send_voice_sound_id, ^{
            
            //Remove the sound from the system
            AudioServicesRemoveSystemSoundCompletion(send_voice_sound_id);
            
            [self resumeBackgroundSoundWithError:nil];
        });
        
    } else {
        
        //playback
        AudioServicesPlaySystemSound(send_voice_sound_id);
        
        AudioServicesAddSystemSoundCompletion(send_voice_sound_id, CFRunLoopGetMain(), kCFRunLoopDefaultMode, soundCompletion, NULL);
    }
}

//Underneath iOS 9.0
void soundCompletion(SystemSoundID sound,void * clientData) {
    
    //Remove the sound from the system
    AudioServicesRemoveSystemSoundCompletion(sound);
    
    [GDAudioSessionControl resumeBackgroundSoundWithError:nil];
}

+ (void)Virbra {
    AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
}

/*
 * Resume the sound from background and deactivate current app audio session
 * @param error Failure message
 **/
+ (void)resumeBackgroundSoundWithError:(NSError **)error {
    //Deactivate audio session in current app
    //Activate audio session in others' app
    //See here https://developer.apple.com/library/content/documentation/Audio/Conceptual/AudioSessionProgrammingGuide/AudioGuidelinesByAppType/AudioGuidelinesByAppType.html#//apple_ref/doc/uid/TP40007875-CH11-SW1
    
    [[AVAudioSession sharedInstance] setActive:NO withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:error];
}

/*
 * Pause the sound from the background and activate current app audio session 
 * @param error Failure message
 **/
+ (void)pauseBackgroundSoundWithError:(NSError **)error {
    
    //See here https://developer.apple.com/library/content/documentation/Audio/Conceptual/AudioSessionProgrammingGuide/ConfiguringanAudioSession/ConfiguringanAudioSession.html#//apple_ref/doc/uid/TP40007875-CH2-SW1
    
    AVAudioSession *session = [AVAudioSession sharedInstance];
    //Set AVAudioSessionCategoryPlayback category mode for current app
    [session setCategory:AVAudioSessionCategoryPlayback error:error];
    //Activate audio session in current app
    //Deactivate audio session in others' app
    [session setActive:YES error:error];
}

+ (void)pauseBackgroundSoundWithCategoryRecord {
    AVAudioSession *session = [AVAudioSession sharedInstance];
    [session setCategory:AVAudioSessionCategoryRecord error:nil];
    [session setActive:YES error:nil];
}

@end