Android Service

Service中同样不能进行耗时操作

1. startService()方式启动
   startService()->onCreate()->onStartCommand()->stopService()->onDestory()
2. bindService()方式启动
   bindService()->onCreate()->onBind()->onUnbind()->onDestory()
3. startService()后，还可以继续和多个进程bindService()。
   startService()->onCreate()->onStartCommand()->onBindService()->onUnbind()->stopService()->onDestory()

想和Remote Service通信，就需要使用android的IPC通信机制