android service

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        Intent intent = new Intent();
        intent.setClass(TestActivity.this, FirstService.class);
        startService(intent);
        

package mars.service1;

import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;

public class FirstService extends Service {

    @Override
    public IBinder onBind(Intent intent) {
        // TODO Auto-generated method stub
        System.out.println("Service onBind");
        return null;
    }

    //当创建一个Servcie对象之后，会首先调用这个函数
    @Override
    public void onCreate() {
        // TODO Auto-generated method stub
        super.onCreate();
        System.out.println("Service onCreate");
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        
    
        new Thread(run).start();
        // TODO Auto-generated method stub
        //System.out.println("flags--->" + flags);
        //System.out.println("startId--->" + startId);
        //System.out.println("Service onStartCommand");
        return START_NOT_STICKY;
    }
    
    Runnable run=new Runnable(){

        @Override
        public void run() {
            // TODO Auto-generated method stub
            int i=0;
            while(true){
                i++;
                System.out.println("&&&&&&&&&&&&&&&&&&&&&&&&&&&&"+i);
                if(i>10000000)break;
            }
        }};

    @Override
    public void onDestroy() {
        // TODO Auto-generated method stubo
        System.out.println("Service onDestory");
        super.onDestroy();
    }
}

  <service android:name=".FirstService"></service>

 

  AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);  
        
        PendingIntent pi = PendingIntent.getService(this, 0, new Intent(this, FirstService.class), Intent.FLAG_ACTIVITY_NEW_TASK);  
        long now = System.currentTimeMillis();  
        am.setInexactRepeating(AlarmManager.RTC_WAKEUP, now, 3000, pi);