How to switch Playing Audio in Xamarin from the Ear Speaker to the Speaker

Question

I am writing an app for both iOS and Android.
I can successfully record audio and play it back on both, but on iOS it plays back through the ear speaker whilst on Android, it plays back through the speaker.
Can I select which one I want to assign to a button?

Answer 1

Hello,​

Welcome to our Microsoft Q&A platform!

Android and iOS native provide the related method, try to select the speaker on each native platform and then using DependencyService to call the code in the shared project. Here is the sample code, you could refer to it.

Android platform:

   public class DroidAudioService : IAudioService  
   {  
       Context context;  
       public AudioService()  
       {  
           context = Android.App.Application.Context;  
       }  
     
       public void PlayUsingEarSpeaker()  
       {  
           var mediaPlayer = MediaPlayer.Create(Android.App.Application.Context, Resource.Raw.sound_file);  
           var audioManager = (AudioManager)Android.App.Application.Context.GetSystemService(Context.AudioService);  
     
           mediaPlayer.SetAudioStreamType(Android.Media.Stream.VoiceCall);  
           audioManager.Mode = Mode.InCall;  
           audioManager.SpeakerphoneOn = false;  
     
           mediaPlayer.Start();  
       }  
     
       public void PlayUsingSpeaker()  
       {  
           var mediaPlayer = MediaPlayer.Create(Android.App.Application.Context, Resource.Raw.sound_file);  
           var audioManager = (AudioManager)Android.App.Application.Context.GetSystemService(Context.AudioService);  
     
           mediaPlayer.SetAudioStreamType(Android.Media.Stream.Music);  
           audioManager.Mode = Mode.Normal;  
           audioManager.SpeakerphoneOn = true;  
     
           mediaPlayer.Start();  
       }  
   }  

iOS platform:

   public class IOSAudioService : IAudioService  
   {  
       public AudioService()  
       {  
       }  
     
       public void PlayUsingEarSpeaker(string fileName)  
       {  
           var session = AVAudioSession.SharedInstance();  
           session.SetCategory(AVAudioSessionCategory.PlayAndRecord);  
           session.SetActive(true);  
           NSError error;  
           var player = new AVAudioPlayer(new NSUrl(fileName), "mp3", out error);  
           player.Volume = 1.0f;  
           player.Play();  
     
       }  
     
       public void PlayUsingSpeaker(string fileName)  
       {  
           var session = AVAudioSession.SharedInstance();  
           session.SetCategory(AVAudioSessionCategory.Playback);  
           session.SetActive(true);  
           NSError error;  
           var player = new AVAudioPlayer(new NSUrl(fileName), "mp3", out error);  
           player.Volume = 1.0f;  
           player.Play();  
     
       }  
   }  

Best Regards,

Jarvan Zhang

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