altoslib: Make AltosPreferencesBackend abstract. Add set/put Serializable

[fw/altos] / altosdroid / src / org / altusmetrum / AltosDroid / AltosDroidPreferencesBackend.java

diff --git a/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferencesBackend.java b/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferencesBackend.java
index eeccd0905241f7f311793f33eb5bdc234619935f..5c7ec513eb19f78e55f5c3c670d97378094c87dd 100644 (file)
--- a/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferencesBackend.java
+++ b/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferencesBackend.java
@@ -24,9 +24,9 @@ import android.content.SharedPreferences;
 import android.os.Environment;
 import android.util.*;
 
-import org.altusmetrum.altoslib_9.*;
+import org.altusmetrum.altoslib_10.*;
 
-public class AltosDroidPreferencesBackend implements AltosPreferencesBackend {
+public class AltosDroidPreferencesBackend extends AltosPreferencesBackend {
        public final static String        NAME    = "org.altusmetrum.AltosDroid";
        private Context                   context = null;
        private SharedPreferences         prefs   = null;
@@ -53,6 +53,8 @@ public class AltosDroidPreferencesBackend implements AltosPreferencesBackend {
        }
 
        public AltosPreferencesBackend node(String key) {
+               if (!nodeExists(key))
+                       putBoolean(key, true);
                return new AltosDroidPreferencesBackend(context, key);
        }