altosui: add missing methods for Backend, fix BT code.

[fw/altos] / altosui / AltosUIPreferencesBackend.java

diff --git a/altosui/AltosUIPreferencesBackend.java b/altosui/AltosUIPreferencesBackend.java
index 16844f378cc5679c41ff92530aeb378f415fef03..2b2769c218ac05aa499136a575482970b210ddad 100644 (file)
--- a/altosui/AltosUIPreferencesBackend.java
+++ b/altosui/AltosUIPreferencesBackend.java
@@ -73,6 +73,14 @@ public class AltosUIPreferencesBackend implements AltosPreferencesBackend {
                return new AltosUIPreferencesBackend(_preferences.node(key));
        }
 
+       public String[] keys() {
+               return _preferences.keys();
+       }
+
+       public void remove(String key) {
+               _preferences.remove(key);
+       }
+
        public void    flush() {
                try {
                        _preferences.flush();