BroadcastReceiver未从操作\u电池\u更改中获得更新

我已经创建了自定义广播接收器来监听电池的变化(我想监视电池的百分比电平)

class MyService : IntentService("MyService") {

val receiver: PowerConnectionReceiver = PowerConnectionReceiver()

override fun onHandleIntent(intent: Intent?) {
  Timber.d("Service started now")
}

override fun onCreate() {
 val batteryStatus: Intent? = 
 IntentFilter(Intent.ACTION_BATTERY_CHANGED).let { ifilter ->
  registerReceiver(receiver, ifilter)
 }

}

class PowerConnectionReceiver : BroadcastReceiver() {

override fun onReceive(context: Context, intent: Intent) {
     val status: Int = intent.getIntExtra(BatteryManager.EXTRA_STATUS, -1)
    Timber.d("Battery changed")
    }
  }
}