How to make lasting changes to config.xml in Ionic project

Question

Following Google Firebase's instructions (step 7) I'm trying to add the following to my config.xml file (in an Ionic project):

<universal-links>
    <host name="abc123.app.goo.gl" scheme="https" />
    <host name="my-app.firebaseapp.com" scheme="https">
        <path url="/__/auth/callback"/>
    </host>
</universal-links>

But each time I emulate the app the inserted code gets removed. How can I add the required code to the config.xml and keep it there without Ionic (or Cordova) removing the modifications.

Answer 1

the simple solution for this is to run a cordova clean before running any further ionic build/run.

1. Make your /config.xml changes
2. Run cordova clean
3. Run your ionic command (which rebuilds the config within platforms) like ionic cordova run android

I often run it as a concatenated command if I'm experimenting with config.xml, ie cordova clean; ionic cordova run android;