Can someone refer me to a good tutorial or starting point for implementing a push service for BlackBerry apps?

有人可以参考我一个很好的教程或起点实现黑莓应用程序推送服务？

youdao

Can someone refer me to a good tutorial or starting point for implementing a push service for BlackBerry apps?

有人可以参考我一个很好的教程或起点实现黑莓应用程序推送服务？

youdao