Merge "Initialize SubtypeLocale from Settings"

java/src/com/android/inputmethod/latin/Settings.java

@@ -111,6 +111,10 @@ public class Settings extends InputMethodSettingsFragment
         final Resources res = getResources();
         final Context context = getActivity();
 
+        // When we are called from the Settings application but we are not already running, the
+        // {@link SubtypeLocale} class may not have been initialized. It is safe to call
+        // {@link SubtypeLocale#init(Context)} multiple times.
+        SubtypeLocale.init(context);
         mVoicePreference = (ListPreference) findPreference(PREF_VOICE_MODE);
         mShowCorrectionSuggestionsPreference =
                 (ListPreference) findPreference(PREF_SHOW_SUGGESTIONS_SETTING);

java/src/com/android/inputmethod/latin/SubtypeLocale.java

@@ -41,6 +41,7 @@ public class SubtypeLocale {
     public static final String QWERTY = "qwerty";
     public static final int UNKNOWN_KEYBOARD_LAYOUT = R.string.subtype_generic;
 
+    private static boolean sInitialized = false;
     private static String[] sPredefinedKeyboardLayoutSet;
     // Keyboard layout to its display name map.
     private static final HashMap<String, String> sKeyboardLayoutToDisplayNameMap =
@@ -69,7 +70,10 @@ public class SubtypeLocale {
         // Intentional empty constructor for utility class.
     }
 
-    public static void init(Context context) {
+    // Note that this initialization method can be called multiple times.
+    public static synchronized void init(Context context) {
+        if (sInitialized) return;
+
         final Resources res = context.getResources();
 
         final String[] predefinedLayoutSet = res.getStringArray(R.array.predefined_layouts);
@@ -109,6 +113,8 @@ public class SubtypeLocale {
             final String keyboardLayoutSet = keyboardLayoutSetMap[i + 1];
             sLocaleAndExtraValueToKeyboardLayoutSetMap.put(key, keyboardLayoutSet);
         }
+
+        sInitialized = true;
     }
 
     public static String[] getPredefinedKeyboardLayoutSet() {