Android编程实现检测当前电源状态的方法

IntentFilter mIntentFilter = new IntentFilter();mIntentFilter.addAction(Intent.ACTION_BATTERY_CHANGED);registerReceiver(mIntentReceiver, mIntentFilter);//声明消息处理过程 private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {  @Override  public void onReceive(Context context, Intent intent) {   String action = intent.getAction();   //要看看是不是我们要处理的消息   if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {    //电池电量，数字    Log.d("Battery", "" + intent.getIntExtra("level", 0));    //电池最大容量    Log.d("Battery", "" + intent.getIntExtra("scale", 0));    //电池伏数    Log.d("Battery", "" + intent.getIntExtra("voltage", 0));    //电池温度    Log.d("Battery", "" + intent.getIntExtra("temperature", 0));    //电池状态，返回是一个数字    // BatteryManager.BATTERY_STATUS_CHARGING 表示是充电状态    // BatteryManager.BATTERY_STATUS_DISCHARGING 放电中    // BatteryManager.BATTERY_STATUS_NOT_CHARGING 未充电    // BatteryManager.BATTERY_STATUS_FULL 电池满    Log.d("Battery", "" + intent.getIntExtra("status", BatteryManager.BATTERY_STATUS_UNKNOWN));    //充电类型 BatteryManager.BATTERY_PLUGGED_AC 表示是充电器，不是这个值，表示是 USB    Log.d("Battery", "" + intent.getIntExtra("plugged", 0));    //电池健康情况，返回也是一个数字    //BatteryManager.BATTERY_HEALTH_GOOD 良好    //BatteryManager.BATTERY_HEALTH_OVERHEAT 过热    //BatteryManager.BATTERY_HEALTH_DEAD 没电    //BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE 过电压    //BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE 未知错误    Log.d("Battery", "" + intent.getIntExtra("health", BatteryManager.BATTERY_HEALTH_UNKNOWN));   }  }};