Merge branch 'languages' into follow-route

app/src/main/java/com/a1/nextlocation/MainActivity.java

@@ -28,8 +28,9 @@ import java.io.File;
 import java.util.Arrays;
 import java.util.Locale;
 
-public class MainActivity extends AppCompatActivity {
+public class MainActivity extends AppCompatActivity implements Refreshable{
     private static final String TAG = MainActivity.class.getName();
+    private BottomNavigationView bottomNav;
 
     /**
      * onCreate method that creates the main activity
@@ -38,12 +39,14 @@ public class MainActivity extends AppCompatActivity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+
+        // initialize saved language from sharedPreferences
+        setLocale(loadLocale());
+
         setContentView(R.layout.activity_main);
-
-        BottomNavigationView bottomNav = findViewById(R.id.navigation_bar);
+        bottomNav = findViewById(R.id.navigation_bar);
         bottomNav.setOnNavigationItemSelectedListener(navListener);
 
-
         /*System.out.println(Arrays.toString(getFilesDir().listFiles()));
         FileIO<Route> fileIO = new FileIO<>();
         fileIO.writeFileData(new Route("TERSTSET"), getApplicationContext());
@@ -56,10 +59,9 @@ public class MainActivity extends AppCompatActivity {
         RouteListManager.INSTANCE.setContext(this);
         RouteListManager.INSTANCE.load();
 
-        // initialize saved language from sharedPreferences
-        setLocale(loadLocale());
-
-        getSupportFragmentManager().beginTransaction().replace(R.id.fragment_layout, new HomeFragment()).commit();
+        if (savedInstanceState == null) {
+            getSupportFragmentManager().beginTransaction().replace(R.id.fragment_layout, new HomeFragment()).commit();
+        }
     }
 
     /**
@@ -105,4 +107,14 @@ public class MainActivity extends AppCompatActivity {
         getSupportFragmentManager().beginTransaction().replace(R.id.fragment_layout, selectedFragment).commit();
         return true;
     };
+
+    /**
+     * refreshes bottom navigation
+     */
+    @Override
+    public void refresh() {
+        bottomNav.getMenu().clear();
+        bottomNav.inflateMenu(R.menu.navmenu);
+        bottomNav.setSelectedItemId(R.id.settings);
+    }
 }

app/src/main/java/com/a1/nextlocation/Refreshable.java

@@ -0,0 +1,5 @@
+package com.a1.nextlocation;
+
+public interface Refreshable {
+    void refresh();
+}

app/src/main/java/com/a1/nextlocation/fragments/SettingsFragment.java

@@ -22,16 +22,24 @@ import android.widget.Spinner;
 
 import com.a1.nextlocation.MainActivity;
 import com.a1.nextlocation.R;
+import com.a1.nextlocation.Refreshable;
+
+import org.jetbrains.annotations.NotNull;
 
 import java.util.Locale;
 
 public class SettingsFragment extends Fragment {
 
     private SharedPreferences.Editor editor;
-    
     private ImageView imageButton;
-
     SwitchCompat fontChanger;
+    private Refreshable refreshable;
+
+    @Override
+    public void onAttach(@NotNull Context context) {
+        super.onAttach(context);
+        refreshable = (Refreshable) context;
+    }
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -87,7 +95,7 @@ public class SettingsFragment extends Fragment {
 
     private void initializeLanguageDropdown(View view) {
         Spinner languageDropdown = view.findViewById(R.id.dropdown_menu_Settings);
-        String[] items = new String[]{"Nederlands", "Engels", "Chinees"};
+        String[] items = new String[]{getResources().getString(R.string.Dutch), getResources().getString(R.string.English), getResources().getString(R.string.Chinese)};
         ArrayAdapter<String> arrayAdapter = new ArrayAdapter<>(getActivity(), android.R.layout.simple_spinner_dropdown_item, items);
         languageDropdown.setAdapter(arrayAdapter);
 
@@ -99,15 +107,11 @@ public class SettingsFragment extends Fragment {
             @Override
             public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                 setLocale(dropdownPositionToLanguage(id));
+                // refresh fragment on language change
                 if (id != previousID) {
-                    Fragment currentFragment = getActivity().getSupportFragmentManager().findFragmentById(R.id.fragment_layout);
-                    FragmentTransaction fragmentTransaction = getFragmentManager().beginTransaction();
-                    fragmentTransaction.detach(currentFragment);
-                    fragmentTransaction.attach(currentFragment);
-                    fragmentTransaction.commit();
+                    refresh();
                 }
             }
-
             @Override
             public void onNothingSelected(AdapterView<?> parent) {
             }
@@ -157,6 +161,8 @@ public class SettingsFragment extends Fragment {
         fragmentTransaction.detach(currentFragment);
         fragmentTransaction.attach(currentFragment);
         fragmentTransaction.commit();
+
+        refreshable.refresh();
     }
 
     /**

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

@@ -20,4 +20,7 @@
     <string name="activate">activeren</string>
     <string name="done">Klaar</string>
     <string name="cancel">annuleren</string>
+    <string name="English">Engels</string>
+    <string name="Dutch">Nederlands</string>
+    <string name="Chinese">Chinees</string>
 </resources>

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

@@ -19,4 +19,7 @@
     <string name="done">Done</string>
     <string name="cancel">cancel</string>
     <string name="route_stop_toast">Route stopped!</string>
+    <string name="Dutch">Dutch</string>
+    <string name="English">English</string>
+    <string name="Chinese">Chinese</string>
 </resources>