onStartCommand 永远不会被调用

Question

我正在通过 MainActivity 运行服务

startService(mServiceIntent)

但是只有 onCreate 方法被调用。我需要从 Intent 收集一些额外的参数，所以我想 onStartCommand 也被调用。你知道它没有发生的原因是什么吗？我的服务代码。

class ImportantService : Service() {

    var phoneListener : MyPhoneStateListener? = null
    var listening = false
    var telephony: TelephonyManager? = null

    override fun onBind(intent: Intent): IBinder {
        TODO("Return the communication channel to the service.")
    }

    override fun onCreate() {
        super.onCreate()
        Log.d("ImportantService", "On Create")
        //startListen()
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
        {
            val builder = NotificationCompat.Builder(this, "ch1")
                    .setContentText("Content text")
                    .setContentTitle("Content title")
            startForeground(101,builder.build())
        }
    }

    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
        return super.onStartCommand(intent, flags, startId)

        // this method is never invoked
        Log.d("ImportantService", "On Start")
        if(listening)
        {
            Log.d("ImportantService", "Started")
            startListen()
        }
        else
        {
            Log.d("ImportantService", "Stopped")
           // stopListen()
        }

    }


    fun startListen()
    {
        Log.d("Service", "startListen")
     
    }  
}

Answer 1

确保将 return super.onStartCommand(intent, flags, startId) 移动到函数的末尾。