Android中監聽電池變化

private BroadcastReceiver batteryReceiver = new BroadcastReceiver() {

		@Override
		public void onReceive(Context context, Intent intent) {
			if (intent.getAction().equals(Intent.ACTION_BATTERY_CHANGED)) {
				int level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
				int scale = intent.getIntExtra(BatteryManager.EXTRA_SCALE, -1);
				int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS,
						BatteryManager.BATTERY_STATUS_UNKNOWN);
				 Log.e("", "level-->" + level + "\nscale-->" + scale +
				 "\nstatus-->" + status);
				if (status == BatteryManager.BATTERY_STATUS_CHARGING) {

					ivBattery.setImageResource(R.drawable.battery_chongdian) ;
				} else {
					int l = -1;
					if (level >= 0 && scale > 0) {
						l = level * 100 / scale;
					}
					if (l >= 85) {

						ivBattery.setImageResource(R.drawable.battery_full);
					} else if (l >= 70 && l < 85) {

						ivBattery.setImageResource(R.drawable.battery_bashi) ;
					} else if (l >= 50 && l < 70) {

						ivBattery.setImageResource(R.drawable.battery_wushi) ;
					} else if (l >= 30 && l < 50) {

						ivBattery.setImageResource(R.drawable.battery_sanshi) ;
					} else if (l >= 16 && l < 30) {

						ivBattery.setImageResource(R.drawable.battery_sanshi) ;
					} else if (l >= 0 && l < 16) {

						ivBattery.setImageResource(R.drawable.battery_ling) ;
					}
				}
			}
		}
	};