Add language select in settings

app/src/main/java/com/cringe_studios/cringe_authenticator/MainActivity.java

@@ -55,9 +55,7 @@ public class MainActivity extends AppCompatActivity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        setLocale("de");
+        //getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE); TODO: enable secure flag
-
-        //getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
 
         Integer themeID = SettingsUtil.THEMES.get(SettingsUtil.getTheme(this));
         if(themeID != null) {
@@ -66,6 +64,8 @@ public class MainActivity extends AppCompatActivity {
             setTheme(R.style.Theme_CringeAuthenticator_Blue_Green);
         }
 
+        setLocale(SettingsUtil.getLocale(this));
+
         Executor executor = ContextCompat.getMainExecutor(this);
         BiometricPrompt prompt = new BiometricPrompt(this, executor, new BiometricPrompt.AuthenticationCallback() {
             @Override
@@ -110,8 +110,7 @@ public class MainActivity extends AppCompatActivity {
         });
     }
 
-    private void setLocale(String lang) {
+    public void setLocale(Locale locale) {
-        Locale locale = new Locale(lang);
         Locale.setDefault(locale);
         Configuration config = new Configuration();
         config.locale = locale;

app/src/main/java/com/cringe_studios/cringe_authenticator/fragment/SettingsFragment.java

@@ -14,10 +14,14 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.biometric.BiometricManager;
 
+import com.cringe_studios.cringe_authenticator.MainActivity;
 import com.cringe_studios.cringe_authenticator.databinding.FragmentSettingsBinding;
 import com.cringe_studios.cringe_authenticator.util.FabUtil;
 import com.cringe_studios.cringe_authenticator.util.SettingsUtil;
 
+import java.util.Arrays;
+import java.util.Locale;
+
 public class SettingsFragment extends NamedFragment {
 
     private FragmentSettingsBinding binding;
@@ -32,6 +36,32 @@ public class SettingsFragment extends NamedFragment {
     public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
         binding = FragmentSettingsBinding.inflate(inflater);
 
+        Locale[] locales = new Locale[] {Locale.ENGLISH, Locale.GERMAN};
+
+        String[] localeNames = new String[locales.length];
+        for(int i = 0; i < locales.length; i++) {
+            localeNames[i] = locales[i].getDisplayName(locales[i]);
+        }
+
+        binding.settingsLanguage.setAdapter(new ArrayAdapter<>(getContext(), android.R.layout.simple_list_item_1, localeNames));
+        binding.settingsLanguage.setSelection(Arrays.asList(locales).indexOf(SettingsUtil.getLocale(requireContext())));
+        binding.settingsLanguage.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
+            @Override
+            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+                Locale locale = locales[position];
+                if(locale.equals(SettingsUtil.getLocale(requireContext()))) return;
+
+                SettingsUtil.setLocale(requireContext(), locale);
+                ((MainActivity) requireActivity()).setLocale(locale);
+                requireActivity().recreate();
+            }
+
+            @Override
+            public void onNothingSelected(AdapterView<?> parent) {
+
+            }
+        });
+
         binding.settingsEnableIntroVideo.setChecked(SettingsUtil.isIntroVideoEnabled(requireContext()));
         binding.settingsEnableIntroVideo.setOnCheckedChangeListener((view, checked) -> SettingsUtil.setEnableIntroVideo(requireContext(), checked));
 

app/src/main/java/com/cringe_studios/cringe_authenticator/util/SettingsUtil.java

@@ -14,6 +14,7 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 
 public class SettingsUtil {
@@ -130,6 +131,15 @@ public class SettingsUtil {
         return ctx.getSharedPreferences(GENERAL_PREFS_NAME, Context.MODE_PRIVATE).getString("theme", THEME_NAMES.get(0));
     }
 
+    public static void setLocale(Context ctx, Locale locale) {
+        SharedPreferences prefs = ctx.getSharedPreferences(GENERAL_PREFS_NAME, Context.MODE_PRIVATE);
+        prefs.edit().putString("locale", locale.getLanguage()).apply();
+    }
+
+    public static Locale getLocale(Context ctx) {
+        return new Locale(ctx.getSharedPreferences(GENERAL_PREFS_NAME, Context.MODE_PRIVATE).getString("locale", Locale.ENGLISH.getLanguage()));
+    }
+
     public static void enableSuperSecretHamburgers(Context ctx) {
         ctx.getSharedPreferences(GENERAL_PREFS_NAME, Context.MODE_PRIVATE).edit().putBoolean("iLikeHamburgers", true).apply();
     }

app/src/main/res/layout/fragment_settings.xml

@@ -11,17 +11,24 @@
         android:padding="16dp"
         android:orientation="vertical">
 
+        <Spinner
+            android:id="@+id/settings_language"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:paddingTop="10dp"
+            android:paddingBottom="10dp" />
+
         <androidx.appcompat.widget.SwitchCompat
             android:id="@+id/settings_enable_intro_video"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:text="Enable intro video" />
+            android:text="@string/settings_enable_intro_video" />
 
         <androidx.appcompat.widget.SwitchCompat
             android:id="@+id/settings_biometric_lock"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:text="Require biometric unlock" />
+            android:text="@string/settings_biometric_lock" />
 
         <Spinner
             android:id="@+id/settings_theme"

app/src/main/res/values-de-rDE/strings.xml

@@ -34,6 +34,8 @@
     <string name="otp_delete_title">Löschen?</string>
     <string name="otp_delete_message">OTP löschen?</string>
     <string name="edit_group_title">Gruppe bearbeiten</string>
+    <string name="settings_enable_intro_video">Intro-Video zeigen</string>
+    <string name="settings_biometric_lock">Biometrische Authentifizierung aktivieren</string>
     <string-array name="view_edit_delete">
         <item>Anzeigen</item>
         <item>Bearbeiten</item>

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

@@ -74,6 +74,8 @@
     <string name="otp_delete_title">Delete?</string>
     <string name="otp_delete_message">Delete this?</string>
     <string name="edit_group_title">Edit Group</string>
+    <string name="settings_enable_intro_video">Enable intro video</string>
+    <string name="settings_biometric_lock">Require biometric unlock</string>
     <string-array name="view_edit_delete">
         <item>View</item>
         <item>Edit</item>