move languages to preferences

app/src/main/java/info/nightscout/androidaps/MainActivity.java

@@ -2,7 +2,9 @@ package info.nightscout.androidaps;
 
 import android.Manifest;
 import android.content.Intent;
+import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
+import android.preference.PreferenceManager;
 import android.support.annotation.Nullable;
 import android.support.v4.app.ActivityCompat;
 import android.support.v4.app.Fragment;
@@ -101,7 +103,14 @@ public class MainActivity extends AppCompatActivity {
 
     @Subscribe
     public void onStatusEvent(final EventRefreshGui ev) {
-        setUpTabs(true);
+        SharedPreferences SP = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
+        String lang = SP.getString("language", "en");
+        LocaleHelper.setLocale(getApplicationContext(), lang);
+        recreate();
+        try { // activity may be destroyed
+            setUpTabs(true);
+        } catch (IllegalStateException e) {
+        }
     }
 
     private void setUpTabs(boolean switchToLast) {
@@ -134,22 +143,6 @@ public class MainActivity extends AppCompatActivity {
             case R.id.nav_resetdb:
                 MainApp.getDbHelper().resetDatabases();
                 break;
-            case R.id.en_lang:
-                LocaleHelper.setLocale(this, "en");
-                recreate();
-                break;
-            case R.id.cs_lang:
-                LocaleHelper.setLocale(this, "cs");
-                recreate();
-                break;
-            case R.id.de_lang:
-                LocaleHelper.setLocale(this, "de");
-                recreate();
-                break;
-            case R.id.bg_lang:
-                LocaleHelper.setLocale(this, "bg");
-                recreate();
-                break;
             case R.id.nav_export:
                 ImportExportPrefs.verifyStoragePermissions(this);
                 ImportExportPrefs.exportSharedPreferences(this);
@@ -158,7 +151,7 @@ public class MainActivity extends AppCompatActivity {
                 ImportExportPrefs.verifyStoragePermissions(this);
                 ImportExportPrefs.importSharedPreferences(this);
                 break;
-            case R.id.nav_testalarm:
+            case R.id.nav_test_alarm:
                 final int REQUEST_CODE_ASK_PERMISSIONS = 2355;
                 int permission = ActivityCompat.checkSelfPermission(this, Manifest.permission.SYSTEM_ALERT_WINDOW);
                 if (permission != PackageManager.PERMISSION_GRANTED) {
@@ -171,7 +164,7 @@ public class MainActivity extends AppCompatActivity {
                     );
                 }
                 Intent alarmServiceIntent = new Intent(getApplicationContext(), AlarmService.class);
-                alarmServiceIntent.putExtra("alarmText",getString(R.string.testalarm));
+                alarmServiceIntent.putExtra("alarmText", getString(R.string.nav_test_alarm));
                 getApplicationContext().startService(alarmServiceIntent);
                 break;
             case R.id.nav_exit:

app/src/main/java/info/nightscout/androidaps/PreferencesActivity.java

@@ -4,10 +4,11 @@ import android.content.SharedPreferences;
 import android.preference.PreferenceActivity;
 import android.preference.PreferenceFragment;
 import android.preference.PreferenceManager;
-import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 
 import info.nightscout.androidaps.events.EventPreferenceChange;
+import info.nightscout.androidaps.events.EventRefreshGui;
+import info.nightscout.utils.LocaleHelper;
 
 public class PreferencesActivity extends PreferenceActivity implements SharedPreferences.OnSharedPreferenceChangeListener {
     @Override
@@ -20,12 +21,20 @@ public class PreferencesActivity extends PreferenceActivity implements SharedPre
     @Override
     public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
         MainApp.bus().post(new EventPreferenceChange());
+        if (key.equals("language")) {
+            SharedPreferences SP = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
+            String lang = SP.getString("language", "en");
+            LocaleHelper.setLocale(getApplicationContext(), lang);
+            recreate();
+            MainApp.bus().post(new EventRefreshGui());
+        }
     }
 
     public static class MyPreferenceFragment extends PreferenceFragment {
         @Override
         public void onCreate(final Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
+            addPreferencesFromResource(R.xml.pref_language);
             addPreferencesFromResource(R.xml.pref_treatments);
             if (Config.APS)
                 addPreferencesFromResource(R.xml.pref_closedmode);

app/src/main/res/menu/menu_main.xml

@@ -16,21 +16,6 @@
     <item
         android:id="@+id/nav_test_alarm"
         android:title="@string/nav_test_alarm" />
-    <item
-        android:id="@+id/en_lang"
-        android:title="@string/en_lang" />
-    <item
-        android:id="@+id/cs_lang"
-        android:title="@string/cs_lang" />
-    <item
-        android:id="@+id/de_lang"
-        android:title="@string/de_lang" />
-    <item
-        android:id="@+id/bg_lang"
-        android:title="@string/bg_lang" />
-    <item
-        android:id="@+id/nav_testalarm"
-        android:title="@string/testalarm" />
     <item
         android:id="@+id/nav_exit"
         android:title="@string/nav_exit" />

app/src/main/res/values-cs/strings.xml

@@ -218,6 +218,6 @@
     <string name="openapsma_maxiob_summary">Maximální nebolusové IOB, které může OpenAPS použít</string>
     <string name="openapsma_targetrange_label">Cílový rozsah pro OpenAPS</string>
     <string name="bg_lang">Bulgarian</string>
-    <string name="testalarm">Test alarmu</string>
     <string name="dismiss">POTVRDIT</string>
+    <string name="language">Jazyk</string>
 </resources>

app/src/main/res/values/arrays.xml

@@ -9,4 +9,15 @@
         <item>closed</item>
         <item>open</item>
     </string-array>
+
+    <string-array name="languagesArray">
+        <item>@string/en_lang</item>
+        <item>@string/cs_lang</item>
+        <item>@string/bg_lang</item>
+    </string-array>
+    <string-array name="languagesValues" translatable="false">
+        <item>en</item>
+        <item>cs</item>
+        <item>bg</item>
+    </string-array>
 </resources>

app/src/main/res/values/strings.xml

@@ -226,7 +226,7 @@
     <string name="openapsma_maxbasal_title">Max Basal</string>
     <string name="openapsma_maxbasaliob_title">Max Basal IOB</string>
     <string name="bg_lang">Bulgarian</string>
-    <string name="testalarm">Alarm test</string>
     <string name="dismiss">DISMISS</string>
+    <string name="language">Language</string>
 
 </resources>

app/src/main/res/xml/pref_language.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+    <PreferenceCategory
+        android:key="language"
+        android:title="@string/language">
+
+        <ListPreference
+            android:title="@string/language"
+            android:defaultValue="en"
+            android:entries="@array/languagesArray"
+            android:entryValues="@array/languagesValues"
+            android:key="language" />
+    </PreferenceCategory>
+</PreferenceScreen>