Why does preferences.getString("key", "DEFAULT") always return "DEFAULT"?
47,516
Solution 1
change your code to:
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
String mapTypeString = preferences.getString("map_type_pref_key", "DEFAULT");
Solution 2
You have to commit the preferences after edit it.
SharedPreferences preferences = getSharedPreferences("user_preferences.xml", 0);
SharedPreferences.Editor editor = preferences.edit();
editor.putString("map_type_pref_key", "blah_blah");
editor.commit();
Comments
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Hap over 4 years
I have user_preferences.xml in my XML directory. A PreferencesActivity uses this file to create the user preferences activity.. and that works. Whatever the user selects here persists. But I am unable to retrieve the value the user selected.
When I use...
SharedPreferences preferences = getSharedPreferences("user_preferences.xml", 0); String mapTypeString = preferences.getString("map_type_pref_key", "DEFAULT");
... mapTypeString is always "DEFAULT".
It seems like my user_preferences.xml is not found when I instantiate my SharedPreferences object. But, the PreferencesActivity finds it, of course. So, what am I missing?
Many thanks!
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Hap over 12 yearsThat works, thank you. But I am still a bit confused... I use another xml which also stores preferences in the same Activity. Why does getDefaultSharedPreferences give me user_preferences.xml and not the other, settings.xml?
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António Paulo about 8 years"But I am unable to retrieve the value the user selected." He wants to retrieve, not to change.
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JFed-9 over 4 yearsThis could very well be the issue, if OP never set the value with a commit() or apply(), the data would never be retrievable, but it would need more clarification from the question