SharedPreferences not being removed on user uninstalling application

Question

Has anyone encountered this issue on a Nexus 6P device? I am only getting this issue on a Nexus 6P (running Google Fi).

When I install the app there is a key for userIsLoggedIn inside SharedPreferences.

This block:

boolean userIsLoggedIn  = SharedPrefs.userIsLoggedIn(this);

// Then in another class...

 public static boolean userIsLoggedIn(Context context) {
    // For users updating apps, if the previous key-value is a string, convert it to boolean
    try {
        return context.getSharedPreferences(LOGIN_FILE, Context.MODE_PRIVATE)
                .getBoolean(USER_LOGGED_IN, false);
    } catch (ClassCastException e) {
        Logger.e(TAG, e.getMessage());
        context.getSharedPreferences(LOGIN, Context.MODE_PRIVATE)
                .edit()
                .putBoolean(USER_LOGGED_IN, false)
                .commit();
        return context.getSharedPreferences(LOGIN, Context.MODE_PRIVATE)
                .getBoolean(USER_LOGGED_IN, false);
    }
}

Now this should return false on a new uninstall but debugging this on a fresh install I get the following on App Startup.

I also running Proguard if that matters, when running the device on a non-proguard enabled APK it runs ok. Running proguard on any other devices runs fine.

I think login is true somewhere in code because shared preference dont behave like that so please check that first. — KDeogharkar, Jan 27 '16 at 05:24
That is definitely not the issue, this piece of code is run first. Have confirmed on 8 other devices. — AndyRoid, Jan 27 '16 at 05:25

score 96 · Accepted Answer · edited May 23 '17 at 12:02

96

Since Nexus 6P is running Android M, I think Automatic Backups is the issue.

I think You can use allowBackup to stop that.

Check this answer: https://stackoverflow.com/a/32010582/336312

edited May 23 '17 at 12:02

Community

1
1

answered Jan 27 '16 at 05:26

code2be

1,358
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score 20 · Answer 2 · answered Oct 03 '17 at 04:13

20

In android M and above versions they keep application backups in google driver, you can disable this by using, go to your project manifest file under Application section set android:allowBackup="true" to false.and you are good to go.

answered Oct 03 '17 at 04:13

Ashana.Jackol

3,064
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score 16 · Answer 3 · answered Apr 16 '18 at 13:51

16

you can add to your manifest:

        android:fullBackupContent="false"

answered Apr 16 '18 at 13:51

Mina Farid

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SharedPreferences not being removed on user uninstalling application

3 Answers3

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