MonoGame.Samples/BatteryStatus/Platforms/Android/PowerStatus.cs

using Android.App;
using Android.Content;
using Android.OS;
using BatteryStatus;

namespace BatteryStatus.Android
{
    public class PowerStatus : IPowerStatus
    {
        public string BatteryChargeStatus
        {
            get
            {
                var filter = new IntentFilter(Intent.ActionBatteryChanged);
                var battery = Application.Context.RegisterReceiver(null, filter);
                if (battery != null)
                {
                    int status = battery.GetIntExtra(BatteryManager.ExtraStatus, -1);

                    switch ((global::Android.OS.BatteryStatus)status)
                    {
                        case global::Android.OS.BatteryStatus.Charging:
                            return "Charging";
                        case global::Android.OS.BatteryStatus.Full:
                            return "Full";
                        case global::Android.OS.BatteryStatus.Discharging:
                            return "Discharging";
                        case global::Android.OS.BatteryStatus.NotCharging:
                            return "Not Charging";
                        case global::Android.OS.BatteryStatus.Unknown:
                        default:
                            return "Unknown";
                    }
                }

				return "Unknown";
			}
        }

        public string PowerLineStatus
        {
            get
            {
                var filter = new IntentFilter(Intent.ActionBatteryChanged);
                var battery = Application.Context.RegisterReceiver(null, filter);
                if (battery != null)
                {
                    int plugged = battery.GetIntExtra(global::Android.OS.BatteryManager.ExtraPlugged, -1);
                    if (plugged == (int)global::Android.OS.BatteryPlugged.Ac)
                        return "AC";
                    if (plugged == (int)global::Android.OS.BatteryPlugged.Usb)
                        return "USB";
                    if (plugged == (int)global::Android.OS.BatteryPlugged.Wireless)
                        return "Wireless";
                }
                return "Unplugged";
            }
        }

        public int BatteryLifePercent
        {
            get
            {
                var filter = new IntentFilter(Intent.ActionBatteryChanged);
                var battery = Application.Context.RegisterReceiver(null, filter);
                if (battery != null)
                {
                    int level = battery.GetIntExtra(global::Android.OS.BatteryManager.ExtraLevel, -1);
                    int scale = battery.GetIntExtra(global::Android.OS.BatteryManager.ExtraScale, -1);
                    if (level >= 0 && scale > 0)
                        return (int)((level / (float)scale) * 100);
                }
                return -1;
            }
        }
    }
}