问题
If possible give an example. Thank you.
回答1:
Yes you can. GCM works since Android 2.2.
Example & docs: http://developer.android.com/guide/google/gcm/index.html
来源：https://stackoverflow.com/questions/13129169/can-i-use-gcm-for-a-new-application-based-on-android-2-2-froyo