Android Question Firebase auth: Transfer a anonymous id to a other phone

[Alexander Stolte]

Hey,

I use the Firebase Auth library from Manfred, there it is possible to generate an anonymous id.

But what if the user changes his mobile? I want to give everyone the opportunity to transfer their account to a new phone.

Is there a possibility?

Greetings

PS: I have the ID of firebase again for each user in an external Dtenbank available.

 

[DonManfred]

Is there a possibility?

I don´t know if there is a way. As far as i know (not read all Documentation) you cannot change the ID or to change the User connected to it.

Firebase is giving the ID back when a Devices registeres. Even in the Anonymous variant.
If a user then get a new Device then Firebase will probably create a new Id for this User.
You need to get rid of the new Id he got by yourself (your own Serversolution where you store them), Post it to your Cloud. On the Cloud (php, whatever) you can get this id and write the token to your database using the correct account. You now use the new token from this user...