How to play sounds on Xamarin.forms?

Question

I'm creating an app for Android, iOS and Windows Phone using Xamarin.forms. My question is how to play a mp3 or wav with Xamarin Forms?

My business logic is handled by Shared Project and I don't know how to use platform specifically "MediaPlayer".

Answer 1

Right now Xamarin.forms has not sound API, so you need to use DependencyService

Check the following link, it is working fine for me:

https://www.codeproject.com/Articles/1088094/Playing-audio-mp-File-in-Xamarin-Forms

We would require to create an Interface which will be implemented in platform specific project, I named it as IAudio.cs and the code for the same is as follows:

using System;
  namespace AudioPlayEx
   {
    public interface IAudio
        {
            void PlayAudioFile(string fileName);
        }
   }

Android Solution:

    using System;
    using Xamarin.Forms;
    using AudioPlayEx.Droid;
    using Android.Media;
    using Android.Content.Res;

    [assembly: Dependency(typeof(AudioService))]
    namespace AudioPlayEx.Droid
    {
        public class AudioService: IAudio
        {
            public AudioService ()
            {
            }

            public void PlayAudioFile(string fileName){
                var player = new MediaPlayer();
                var fd = global::Android.App.Application.Context.Assets.OpenFd(fileName);
                player.Prepared += (s, e) =>
                {
                    player.Start();
                };
                player.SetDataSource(fd.FileDescriptor,fd.StartOffset,fd.Length);
                player.Prepare();
            }
        }
}

iOS Solution:

using System;
using Xamarin.Forms;
using AudioPlayEx;
using AudioPlayEx.iOS;
using System.IO;
using Foundation;
using AVFoundation;

[assembly: Dependency (typeof (AudioService))]
namespace AudioPlayEx.iOS
{
    public class AudioService : IAudio
    {
        public AudioService ()
        {
        }

        public void PlayAudioFile(string fileName)
        {
            string sFilePath = NSBundle.MainBundle.PathForResource
            (Path.GetFileNameWithoutExtension(fileName), Path.GetExtension(fileName));
            var url = NSUrl.FromString (sFilePath);
            var _player = AVAudioPlayer.FromUrl(url);
            _player.FinishedPlaying += (object sender, AVStatusEventArgs e) => {
                _player = null;
            };
            _player.Play();
        }
    }
}

And finally, we will use the following code in our PCL/shared project in order to play the audio file.

DependencyService.Get<IAudio>().PlayAudioFile("MySong.mp3");