[Firebase] The problem that the currentUser of Firebase Auth does not become null even if the app is uninstalled.

Even if I uninstall the app, the return value of getCurrentUser () of Firebase Auth does not become null, so I am in trouble, so I will record the solution here.

The solution

After investigating, this problem seems to be due to the automatic backup function of android. I solved it by turning off this feature from the manifest. Specifically, I added the following code to manifest.xml.

manifest.xml


 <application
  android:allowBackup="false"
  android:fullBackupContent="false"
  ...

reference

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