public static String getPreferencesName() {
        // There is currently no Android API to get the file name of the shared preferences. Let's hardcode
        // it without needing a CgeoApplication instance (see #2317).
        return "cgeo.geocaching_preferences";
    }
Get the name of the preferences file.
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ONLY USE THIS METHOD IF NO CONTEXT IS AVAILABLE!
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Developer builds will have a different preferences name then specified here.
The suggested way of retrieving the preferences is using {@link androidx.preference.PreferenceManager#getDefaultSharedPreferences(android.content.Context)}.

@return the name of the shared preferences file without the extension
main/src/main/java/cgeo/geocaching/utils/ApplicationSettings.java