还是《第一行代码》中的一个问题

第十章，点击start service或者bind service时会报错：
下面的图来自：参考博客
代码也是在该博客的基础上改的，谢谢该博主啦！

即使是在模拟器上，orz

修改后的MyService中的代码如下：

package com.example.lalala;

import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.os.Binder;
import android.os.Build;
import android.os.IBinder;
import android.util.Log;

import androidx.core.app.NotificationCompat;

public class MyService extends Service {
    private DownloadBinder mBinder=new DownloadBinder();
    class DownloadBinder extends Binder{
        public void startDownload(){
            Log.d("MyService","startDownload executed");
        }
        public int getProgress(){
            Log.d("MyService","getProgress executed");
            return 0;
        }
    }
    public MyService() {
    }

    @Override
    public IBinder onBind(Intent intent) {
        return mBinder;
        // TODO: Return the communication channel to the service.
        //throw new UnsupportedOperationException("Not yet implemented");
    }
    @Override
    public void onCreate(){
        super.onCreate();
        Log.d("MyService","onCreate executed");
        String ID = "com.example.lalala";	//这里的id里面输入自己的项目的包的路径
        String NAME = "Channel One";
        Intent intent = new Intent(MyService.this, MainActivity.class);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
        NotificationCompat.Builder notification; //创建服务对象
        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel(ID, NAME, manager.IMPORTANCE_HIGH);
            channel.enableLights(true);
            channel.setShowBadge(true);
            channel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
            manager.createNotificationChannel(channel);
            notification = new NotificationCompat.Builder(MyService.this).setChannelId(ID);
        } else {
            notification = new NotificationCompat.Builder(MyService.this);
        }
        notification.setContentTitle("This is Content Title")
                .setContentText("This is Content Text")
                .setWhen(System.currentTimeMillis())
                .setSmallIcon(R.mipmap.ic_launcher)
                .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher))
                .setContentIntent(pendingIntent)
                .build();
        Notification notification1 = notification.build();
        startForeground(1,notification1);
    }
    @Override
    public int onStartCommand(Intent intent,int flags,int startId){
        Log.d("MyService","onStartCommand executed");
        return super.onStartCommand(intent,flags,startId);
    }
    @Override
    public void onDestroy(){
        super.onDestroy();
        Log.d("MyService","onDestroy executed");
    }
}