没有这样的服务ComponentInfo {JobScheduler} - Unity Android插件

Question

我为Unity编写了一个插件，但是在启动JobService时遇到此错误，这里是代码：

Baslangic.java

package com.alptugrul.background;

import android.app.Activity;
import android.app.job.JobInfo;
import android.app.job.JobScheduler;
import android.app.job.JobService;
import android.content.ComponentName;
import android.content.Context;
import android.widget.Toast;
import com.unity3d.player.UnityPlayer;
import com.unity3d.player.UnityPlayerActivity;


public class Baslangic extends UnityPlayerActivity{

    public static Context contextAna;
    public static Activity activity;
    private static final int jobId = 1;
    private static JobScheduler jobScheduler;
    private static JobInfo jobInfo;


    public static void setContext () {
        contextAna = UnityPlayer.currentActivity.getApplicationContext();
        activity = UnityPlayer.currentActivity;
        ComponentName componentName = new ComponentName(contextAna,MJobScheduler.class);
        JobInfo.Builder builder = new JobInfo.Builder(jobId,componentName);
        builder.setPeriodic(5000);
        builder.setRequiredNetworkType(JobInfo.NETWORK_TYPE_ANY);
        builder.setPersisted(true);

        jobInfo = builder.build();
        jobScheduler = (JobScheduler) contextAna.getSystemService(JOB_SCHEDULER_SERVICE);

    }
    public static void mesajVer (String mesaj) {
        Toast.makeText(contextAna,mesaj,Toast.LENGTH_LONG).show();
    }

    public static void baslat() {
        jobScheduler.schedule(jobInfo);
        Toast.makeText(contextAna,"Görev Planlandı",Toast.LENGTH_SHORT).show();
    }

}

MJobScheduler.java：

package com.alptugrul.background;

import android.app.Activity;
import android.app.job.JobParameters;
import android.app.job.JobService;
import android.content.Context;
import android.widget.Toast;

import com.unity3d.player.UnityPlayer;

/**
 * Created by Alpaslan on 15.3.2018.
 */

public class MJobScheduler extends JobService {
    private MJobExecuter mJobExecuter;
    public static Context contextAna;
    public static Activity activity;

    public static void setContext () {
        contextAna = UnityPlayer.currentActivity.getApplicationContext();
        activity = UnityPlayer.currentActivity;

    }
    @Override
    public boolean onStartJob(final JobParameters jobParameters) {
        mJobExecuter = new MJobExecuter(){

            @Override
            protected void onPostExecute(String s) {
                Toast.makeText(contextAna,"Arkaplan yeni Mesaj",Toast.LENGTH_SHORT).show();
                jobFinished(jobParameters,false);

            }
        };
        mJobExecuter.execute();

        return true;
    }

    @Override
    public boolean onStopJob(JobParameters jobParameters) {
        mJobExecuter.cancel(true);

        return false;
    }
}

和MJobExecuter.java：

package com.alptugrul.background;

import android.os.AsyncTask;


public class MJobExecuter extends AsyncTask<Void,Void,String> {
    @Override
    protected String doInBackground(Void... voids) {
        return "Arkaplandan sa";
    }
}

我在Unity中的代码：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class deneme : MonoBehaviour {
	private static string fullClassName = "com.alptugrul.background.Baslangic";
	AndroidJavaClass pluginClass;
	void Start () {
		pluginClass = new AndroidJavaClass(fullClassName);
		pluginClass.CallStatic ("setContext");
		pluginClass.CallStatic ("mesajVer","Projen Çalışmaya Başladı!");
		pluginClass.CallStatic ("baslat");
	}
}

和我的清单文件：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.alptugrul.background"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="21"
        android:targetSdkVersion="25" />

    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <application
		android:theme="@style/UnityThemeSelector"
		android:icon="@drawable/app_icon"
        android:label="@string/app_name"
        android:debuggable="true">
        <service
            android:name="com.alptugrul.background.MJobScheduler"
            android:exported="true"
            android:permission="android.permission.BIND_JOB_SERVICE" />
    </application>

</manifest>

EDIT; 我构建我的apk但这个apk将无法安装。我将apk放到AVD上，但安装后没有应用程序是我的。