MyService.java

package com.bigfat.servicetest;

import android.app.Notification;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;

/**
 * @author <a href="mailto:fbzhh007@gmail.com">bigfat</a>
 * @since 2014/12/11
 */
public class MyService extends Service {

    public static final String TAG = "MyService";

    private DownloadBinder mBinder = new DownloadBinder();

    class DownloadBinder extends Binder {

        public void startDownload() {
            Log.d(TAG, "startDownload executed");
        }

        public int getProgress() {
            Log.d(TAG, "getProgress executed");
            return 0;
        }
    }

    @Override
    public IBinder onBind(Intent intent) {
        return mBinder;
    }

    @Override
    public void onCreate() {
        super.onCreate();
        Intent notificationIntent = new Intent(this, MainActivity.class);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_CANCEL_CURRENT);

        Notification notification = new Notification.Builder(this).setSmallIcon(R.drawable.ic_launcher).setTicker("Notification comes").setContentTitle("This is title").setContentText("This is content").setContentIntent(pendingIntent).build();

        startForeground(1, notification);
        Log.d(TAG, "onCreate executed");
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d(TAG, "onStartCommand executed");
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.d(TAG, "onDestroy executed");
    }
}