How To Initiate An Android Gcm Token Refresh?

As per the the docs, To protect the client app and app server from potential malicious re-use of registration tokens, you should periodically initiate token refresh from the s

Solution 1:

The best way to do this would be to schedule a job on the server that sends a notification with ACTIONREFRESH_TOKEN every few months (GCM recommends 6 months). On the client apps, on your message callback, switch on the ACTION and handle the refresh token.

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Old answer

Have you seen this page: https://developers.google.com/instance-id/guides/android-implementation#refresh_tokens

The Instance ID service initiates callbacks periodically (for example, every 6 months), requesting that your app refreshes its tokens. It may also initiate callbacks when:

• There are security issues; for example, SSL or platform issues.
• Device information is no longer valid; for example, backup and restore.
• The Instance ID service is otherwise affected.