您必须获得来自谷歌的API控制台您的浏览器的密钥。 的https：//$c$c.google.com/apis/console

You have to obtain your Browser-Key from Google APIs Console. https://code.google.com/apis/console

您Browserkey将是40个字节的大小。

Your Browserkey will be 40 bytes in size.

您可以参考 http://developer.android.com/google/gcm/gs .HTML 进一步的帮助。

You can refer http://developer.android.com/google/gcm/gs.html for further help.