Android-startService后台运行

            package
             liudeli.service1.service;


            import
             android.app.Service;


            import
             android.content.Intent;

            import
             android.os.IBinder;

            import
             android.util.Log;


            public
            class MyService4 extends Service {

    privatefinalstatic String TAG = MyService4.class.getSimpleName();

    privatefinalstaticint RUN = 1;
    privatefinalstaticint NOT_RUN = 0;

    privateint runState;

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

    @Override
    publicvoid onStart(Intent intent, int startId) {
        super.onStart(intent, startId);
    }

    @Override
    publicint onStartCommand(Intent intent, int flags, int startId) {
        runState = RUN;
        new Thread(new BackgroundRun()).start();
        returnsuper.onStartCommand(intent, flags, startId);
    }

    @Override
    publicvoid onDestroy() {
        super.onDestroy();
        runState = NOT_RUN;
    }

    /**
     * startService 不能直接执行耗时操作，需要通过异步去执行耗时操作，Service只负责长时间到在后台服务运行
     * Service是开启主线程的，Service与Activity很类似，都是开启运行主线程的
     */class BackgroundRun implements Runnable {

        @Override
        publicvoid run() {
            while (runState == RUN) {
                Log.d(TAG, "Background Run ......");
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

            public
            void
             startService(View view) {
        startService(
            new Intent(this, MyService4.class));
    }

    publicvoid stopService(View view) {
        stopService(new Intent(this, MyService4.class));
    }