Appcelerator/ Titanium: Getting Android credentials to push notifications

Question

I want to be able to send push notifications using Titanium on Android. However I get a back-end error whenever I try this, which I believe is to do with invalid credentials. I

Answer 1

I finally managed to get this to work. Basically the docs are heavily out of date.

The way I managed to get it to work is by linking the app to Firebase. From there I went to "Cog/ Settings" > "Cloud Messaging".

This shows your "Sender ID" (which is the same as your project number). For me this was a 12 digit number.

The page also shows a Server key and a Legacy server key. It does not seem to matter which one you use.

If you still receive the following error when pushing a notification:

Exception Type: GCM; Error Code: 3006; Error Message: The sender_id contained in the registration_id does not match the sender_id used to register with the GCM servers

simply uninstall the app and rebuild it.

SIDENOTE:

Linking your app to Firebase creates quite a few API keys automatically in your Google Console API credentials page named like "____ key (auto created by Google Service)".

The "Legacy server key" seems to match the one called: Server key (auto created by Google Service).

Note that just creating an API key yourself does not seem to work. It has to be the API key associated with Firebase.