BroadcastReceiver之BatteryManager

使用动态注册监听系统广播(电池的广播)

 当电池时间改变的时候系统将发出广播,使用 下面的来注册(不能在manifest中声明)来监听到变化,做出相应的变化

IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_BATTERY_CHANGED);
registerReceiver(receiver, filter);

public class BatteryReceiverDemo extends Activity {
    public static final String TAG = "Battery Receiver Debug";

    TextView show = null;
    TextView statusTV;
    BatteryReceiver receiver = new BatteryReceiver();

    public void onCreate(Bundle bundle) {
        super.onCreate(bundle);
        setContentView(R.layout.battery);
        show = (TextView) findViewById(R.id.show);
        statusTV = (TextView) findViewById(R.id.status);
        Log.v(TAG, "onCreate()");

    }

    public void onResume() {
        super.onResume();
        IntentFilter filter = new IntentFilter();
        filter.addAction(Intent.ACTION_BATTERY_CHANGED);
        registerReceiver(receiver, filter);
        Log.v(TAG, "registerReceiver OK ");
    }

    public void onPause() {
        super.onPause();
        unregisterReceiver(receiver);// 解除注册广播
        Log.v(TAG, "unregisterReceiver OK ");
    }

    public class BatteryReceiver extends BroadcastReceiver {
        public void onReceive(Context context, Intent intent) {
            Log.v(TAG + "  Receiver", "is receive ");
            if (intent.getAction().equals(Intent.ACTION_BATTERY_CHANGED)) {
                Bundle bundle = intent.getExtras();
                int level = bundle.getInt(BatteryManager.EXTRA_LEVEL);
                int scale = bundle.getInt(BatteryManager.EXTRA_SCALE);
                int status = bundle.getInt(BatteryManager.EXTRA_STATUS);
                int health = bundle.getInt(BatteryManager.EXTRA_HEALTH);
                int present = bundle.getInt(BatteryManager.EXTRA_PRESENT);
                int voltage = bundle.getInt(BatteryManager.EXTRA_VOLTAGE);
                int temperature = bundle
                        .getInt(BatteryManager.EXTRA_TEMPERATURE);
                int technology = bundle.getInt(BatteryManager.EXTRA_TECHNOLOGY);

                show.setText("level is " + level + "
 scale is " + scale
                        + "
 status is" + status + "
 health is " + health
                        + "
 persend is " + present + "
 voltage is "
                        + voltage + "
 temperature is " + temperature
                        + "
 technology is " + technology);
                Log.v("receiver ", "level is " + level + "
 scale is " + scale
                        + "
 status is" + status + "
 health is " + health
                        + "
 persend is " + present + "
 voltage is "
                        + voltage + "
 temperature is " + temperature
                        + "
 technology is " + technology);

                switch (status) {
                case BatteryManager.BATTERY_STATUS_CHARGING:
                    Toast.makeText(context, "充电中", 4000).show();
                    statusTV.setText("断充电中充电   BATTERY_STATUS_CHARGING  ");
                    break;
                case BatteryManager.BATTERY_STATUS_DISCHARGING:
                    statusTV.setText("断开充电   BATTERY_STATUS_DISCHARGING  ");
                    break;
                case BatteryManager.BATTERY_STATUS_FULL:
                    statusTV.setText("充电完成  BATTERY_STATUS_FULL");
                    break;
                case BatteryManager.BATTERY_STATUS_NOT_CHARGING:
                    statusTV.setText("没有充电  BATTERY_STATUS_NOT_CHARGING");
                    break;
                case BatteryManager.BATTERY_STATUS_UNKNOWN:
                    statusTV.setText("不知道状态   BATTERY_STATUS_UNKNOWN");
                    break;
                default:
                    break;
                }
            }
        }
    }
}