到https://cloud.google.com/console/project登入開發者
註冊完後選api&auth,之後在google cloud messaging for android從off打開至on
之後點選credentials產生一個appid(記得產生keystore)
最後點overview你會看到projectid就是senderid
如果有用titanium，再將appid,senderid輸入至後台
http://developer.android.com/google/gcm/gs.html
http://justfly.idv.tw/2013/01/16/Just_1538.html
http://developer.android.com/google/gcm/gcm.html#register
