Allow background audio play on iOs

[pabloacastillo]

Hi there, this port is great it just needs background audio when a iOs device is blocked or the screen turns off.

I saw the code at nstudio has been updated to run in this mode and seems to be an easy fix.
The six line change occurs in in ios/player.ts:

playFromUrl function change this:

let audioSession = AVAudioSession.sharedInstance();
let output = audioSession.currentRoute.outputs.lastObject.portType;

to this:

let audioSession = AVAudioSession.sharedInstance();
audioSession.setCategoryWithOptionsError(
  AVAudioSessionCategoryAmbient,
  AVAudioSessionCategoryOptions.DuckOthers
);
let output = audioSession.currentRoute.outputs.lastObject.portType;

and in playFromFile function change this:

let audioSession = AVAudioSession.sharedInstance();
let output = audioSession.currentRoute.outputs.lastObject.portType;
TNS_Player_Log('output', output);

to this:

let audioSession = AVAudioSession.sharedInstance();
audioSession.setCategoryWithOptionsError(
  AVAudioSessionCategoryAmbient,
  AVAudioSessionCategoryOptions.DuckOthers
);
let output = audioSession.currentRoute.outputs.lastObject.portType;
TNS_Player_Log('output', output);

I hope this helps someone else who has to dig around this issue.

check more information at nstudio/nativescript-audio#19

[mehyaa]

Can you send a PR?

[pabloacastillo]

Will do after finishing my tests (university is keeping me busy).
New version use AVPlayer instead of AVAudioPlayer so now audio streaming is working on iOs.

[pabloacastillo]

Pull request done.

[FlawaCLV]

Audio doesn't work when I switch my iPhone to silent or lock it. Any idea how to solve this issue ?

[FlawaCLV]

@mehyaa @pabloacastillo my iOS users are getting pissed by this... I'm quite stuck 🙈 Any idea ?

[pabloacastillo]

Can you check this if it works?

In app/App_Resources/iOS/Info.plist

add

<key>UIBackgroundModes</key>
<array>
<string>audio</string>
</array>

You can google "UIBackgroundModes" for more details, but it might work.

Best of lucks!

[FlawaCLV]

@pabloacastillo thanks for your answer, I'd already tried that but no success.

But the good news is I finally managed to make it work! The solution was to add this code to my iOS Delegate. And I do not use your plugin actually, but nativescript-audio.

MyDelegate.prototype.applicationDidEnterBackground = function (application) {
    AVAudioSession.sharedInstance().setCategoryWithOptionsError(
        AVAudioSessionCategoryPlayAndRecord,
        AVAudioSessionCategoryOptions.DefaultToSpeaker
    );
};