androidgoogle-cloud-messaginginstanceid

Instance ID not invalidated when clear application data

I have implemented GCM 3.0 with Instance ID API for sending push notification to application using Application and GCM server.

Here is Instance ID API for GCM documentation which i am referring.

When User direcltly uninstall application without logout then GCM gives "Not Registered" error for devices with the app uninstalled.

What i have to do is to remove useless Device id tokens from Application server for that i have tried with Uninstall of application then Instance ID is changed but when application data is cleared by User then new Instance ID will same as previous Instance ID.

while Android GCM documentation says:

Instance ID is stable but may become invalid, if:

  • App deletes Instance ID
  • Device is factory reset
  • User uninstalls the app
  • User clears app data

is there any particular reason for this?

Solution

  • As Google says, "Instance ID MAY become invalid if ...".

    Here is my findings while using GCM,