Fix issue #818

    <application

        android:name="app.fedilab.android.MainApplication"

        android:allowBackup="false"

        android:dataExtractionRules="@xml/extraction_rules"

        android:fullBackupContent="@xml/backup_rules"

        android:configChanges="orientation|screenSize"

        android:icon="@mipmap/ic_launcher_bubbles"

        android:label="@string/app_name"

<?xml version="1.0" encoding="utf-8"?>

<full-backup-content>

    <include

        domain="sharedpref"

        path="."

        requireFlags="clientSideEncryption,deviceToDeviceTransfer" />

    <include

        domain="database"

        path="."

        requireFlags="clientSideEncryption,deviceToDeviceTransfer" />

</full-backup-content>

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<?xml version="1.0" encoding="utf-8"?>

<data-extraction-rules>

    <device-transfer>

        <include

            domain="sharedpref"

            path="." />

        <include

            domain="database"

            path="." />

    </device-transfer>

</data-extraction-rules>

 No newline at end of file