Difference between getDefaultSharedPreferences and getSharedPreferences

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getDefaultSharedPreferences will use a default name like “com.example.something_preferences”, but getSharedPreferences will require a name.

getDefaultSharedPreferences in fact uses Context.getSharedPreferences (below is directly from the Android source):

public static SharedPreferences getDefaultSharedPreferences(Context context) {
    return context.getSharedPreferences(getDefaultSharedPreferencesName(context),
        getDefaultSharedPreferencesMode());
}

private static String getDefaultSharedPreferencesName(Context context) {
    return context.getPackageName() + "_preferences";
}

private static int getDefaultSharedPreferencesMode() {
    return Context.MODE_PRIVATE;
}

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