title: How to change URL and see push-token in release version
body: <p>I have a <code>release</code> version of an app and want to change a URL of a server (REST API), so that a tester could switch between production and test API. I also want to see <code>token</code> and Firebase <code>push-token</code> for this device and account. Also want to show logs after restarting of the app, because it can crash (if possible).</p>
  <p><a href="https://i.stack.imgur.com/hQI0o.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/hQI0o.png" alt="image" /></a></p>
  <p>I can create an activity with these parameters. It can be opened after tapping several times on one TextView, for instance. It is not bad, but a user theoretically can reproduce and open the activity himself.</p>
  <p>I can write a URL in Firebase Remote Config. Because the tester also has access to FRC, he can change the URL there and restart the app with new URL. It's a bit more difficult than changing in the activity.</p>
  <p>I can create an activity only in test <code>release</code> version, so that in production <code>release</code> version it cannot be launched (this activity won't exist in AndroidManifest in production <code>release</code>).</p>
  <p>What variant to prefer?</p>