IntentFilter mIntentFilter = new IntentFilter();mIntentFilter.addAction(Intent.ACTION_BATTERY_CHANGED);registerReceiver(mIntentReceiver, mIntentFilter);//聲明消息處理過程 private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {  @Override  public void onReceive(Context context, Intent intent) {   String action = intent.getAction();   //要看看是不是我們要處理的消息   if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {    //電池電量，數(shù)字    Log.d("Battery", "" + intent.getIntExtra("level", 0));    //電池最大容量    Log.d("Battery", "" + intent.getIntExtra("scale", 0));    //電池伏數(shù)    Log.d("Battery", "" + intent.getIntExtra("voltage", 0));    //電池溫度    Log.d("Battery", "" + intent.getIntExtra("temperature", 0));    //電池狀態(tài)，返回是一個數(shù)字    // BatteryManager.BATTERY_STATUS_CHARGING 表示是充電狀態(tài)    // BatteryManager.BATTERY_STATUS_DISCHARGING 放電中    // BatteryManager.BATTERY_STATUS_NOT_CHARGING 未充電    // BatteryManager.BATTERY_STATUS_FULL 電池滿    Log.d("Battery", "" + intent.getIntExtra("status", BatteryManager.BATTERY_STATUS_UNKNOWN));    //充電類型 BatteryManager.BATTERY_PLUGGED_AC 表示是充電器，不是這個值，表示是 USB    Log.d("Battery", "" + intent.getIntExtra("plugged", 0));    //電池健康情況，返回也是一個數(shù)字    //BatteryManager.BATTERY_HEALTH_GOOD 良好    //BatteryManager.BATTERY_HEALTH_OVERHEAT 過熱    //BatteryManager.BATTERY_HEALTH_DEAD 沒電    //BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE 過電壓    //BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE 未知錯誤    Log.d("Battery", "" + intent.getIntExtra("health", BatteryManager.BATTERY_HEALTH_UNKNOWN));   }  }};