iOS: Sound doesn't play after unlocked the lock screen

[StephanGerbeth]

Hi,

at first: great library 👍

Browser Specs:
iOS Version: 11.1
Browser: Safari

Scenario:
Everytime i hit a button i want to play an audio. I use WaudBase64 to load the sounds.

Problem:
At the first loading of the page the audio is playing wonderful. Everytime i mash the button the sound plays. But when i lock the screen of my iPhone during the page is opened, unlock the screen after some seconds and i try to hit the button one more time the code will be excuted but no sound is audible.

Code

import {
    Waud,
    WaudBase64
} from 'exports-loader?Waud=global.Waud,WaudBase64=global.WaudBase64Pack,AudioManager=global.AudioManager!waud.js';

let audioLibrary = null;

Waud.init();
Waud.enableTouchUnlock(function() {});

export function loadAudioFile(url) {
    return new Promise(function(resolve) {
        new WaudBase64(url, resolve);
    }).then(function(sounds) {
        audioLibrary = sounds;
        return sounds;
    });
}

export function play(id) {
    let sound = audioLibrary.get(id);
    // i get the right sound object
    if(sound) {
        // will be called properly everytime i hit the button
        sound.play();
    }
}

Do you have some help or a bug fix for me, please?

Cheers
Stephan

[adireddy]

Hey @StephanGerbeth, not sure if this issue is specific to iOS 11.1. Will test it when I get a chance. Is the issue happening in waud sample page? http://www.waudjs.com/sample/

[StephanGerbeth]

yeah this also happen in your sample page.
it won't happen everytime, but often enough -> looks like a race condition.

i also had this bug on iOS 11.0.x.

[DanScott90]

@adireddy I also have this issue, not sure I can add much more detail. Issue seems to be iOS 11 only:

Reported Issue Devices:
iPhone 7 (11.1.1) - Safari / Chrome 62
iPhone 5S (11.1.2) - Safari / Chrome 62
iPhone 8 (11.0.0) - Safari / (Untested)
iPhone 8+ (11.0.3) - Safari / (Untested)

[adireddy]

Got some time to look into this issue. Are you guys using Waud.autoMute()?

[DanScott90]

I'm not. Manually pausing/resuming audio when getting focusOff/focusOn events.
I'm not actually muting the sounds.