AndroidAudio.cs

class AndroidAudio
{
privateprivate static int GetDeviceMaxVolume() {
        int streammusic = 3;
        return deviceAudio.Call<int>("getStreamMaxVolume", streammusic);
    }
 
    private static void SetDeviceVolume(int value) {
        int streammusic = 3;
        int flagshowui = 0;
     
        deviceAudio.Call("setStreamVolume", streammusic, value, flagshowui);
    }
 
    private static AndroidJavaObject audioManager;
 
    private static AndroidJavaObject deviceAudio { get {
        if(audioManager == null) {
            AndroidJavaClass up = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
            AndroidJavaObject context = up.GetStatic<AndroidJavaObject>("currentActivity");
 
            string audioName = context.GetStatic<string>("AUDIO_SERVICE");
 
            audioManager = context.Call<AndroidJavaObject>("getSystemService", audioName);
        }
        return audioManager;
    } }
    }