Adding configuration setting and supporting code to choose language (#168)

app/src/main/java/net/schueller/peertube/activity/CommonActivity.java

@@ -19,12 +19,15 @@
 package net.schueller.peertube.activity;
 
 import android.content.SharedPreferences;
+import android.content.res.Configuration;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
 
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.app.AppCompatDelegate;
 
+import java.util.Locale;
+
 import static net.schueller.peertube.helper.Constants.DEFAULT_THEME;
 import static net.schueller.peertube.helper.Constants.THEME_PREF_KEY;
 
@@ -45,6 +48,21 @@ public class CommonActivity extends AppCompatActivity {
                 "style",
                 getPackageName())
         );
+
+        // Set language
+        String countryCode=sharedPref.getString("pref_language_app","en");
+        Locale locale=new Locale(countryCode);;
+        //Neither Chinese language choice was working, found this fix on stack overflow
+        if(countryCode.equals("zh-rCN"))
+            locale = Locale.SIMPLIFIED_CHINESE;
+        if(countryCode.equals("zh-rTW"))
+            locale = Locale.TRADITIONAL_CHINESE;
+
+        Locale.setDefault(locale);
+        Configuration config = getBaseContext().getResources().getConfiguration();
+        config.locale = locale;
+        getBaseContext().getResources().updateConfiguration(config,
+                getBaseContext().getResources().getDisplayMetrics());
     }
 
 }

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

@@ -433,6 +433,58 @@
         <item>za</item>
         <item>zu</item>
     </string-array>
+
+    <string-array name="supportedLanguagesValues">
+        <item>ar</item>
+        <item>bn</item>
+        <item>cs</item>
+        <item>de</item>
+        <item>el</item>
+        <item>en</item>
+        <item>es</item>
+        <item>fa</item>
+        <item>fi</item>
+        <item>fr</item>
+        <item>gd</item>
+        <item>hi</item>
+        <item>it</item>
+        <item>ja</item>
+        <item>no</item>
+        <item>nl</item>
+        <item>pl</item>
+        <item>ru</item>
+        <item>sv</item>
+        <item>tr</item>
+        <item>zh-rCN</item>
+        <item>zh-rTW</item>
+    </string-array>
+
+    <string-array name = "supportedLanguagesArray">
+        <item>@string/ar</item>
+        <item>@string/bn</item>
+        <item>@string/cs</item>
+        <item>@string/de</item>
+        <item>@string/el</item>
+        <item>@string/en</item>
+        <item>@string/es</item>
+        <item>@string/fa</item>
+        <item>@string/fi</item>
+        <item>@string/fr</item>
+        <item>@string/gd</item>
+        <item>@string/hi</item>
+        <item>@string/it</item>
+        <item>@string/ja</item>
+        <item>@string/no</item>
+        <item>@string/nl</item>
+        <item>@string/pl</item>
+        <item>@string/ru</item>
+        <item>@string/sv</item>
+        <item>@string/tr</item>
+        <item>@string/zh</item>
+        <item>@string/tw</item>
+    </string-array>
+
+
     <string-array name="empty_array"/>
 
     <string-array name="quality">

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

@@ -60,9 +60,10 @@
     <string name="pref_title_peertube_server">PeerTube Server</string>
     <string name="pref_title_background_play">Background Playback</string>
     <string name="pref_description_background_play">If enabled, continues to play video in background.</string>
+    <string name="pref_language_app">Application Language</string>
+    <string name="pref_description_language_app">Select language for application interface. Restart app for change to take effect.</string>
     <string name="pref_title_back_pause">Pause on back button</string>
     <string name="pref_description_back_pause">Pause background play when pressing back during video playback.</string>
-
     <!-- languages -->
     <string name="ab">Abkhazian</string>
     <string name="aa">Afar</string>

app/src/main/res/xml/pref_general.xml

@@ -30,6 +30,15 @@
         android:summary="@string/pref_description_back_pause"
         android:title="@string/pref_title_back_pause" />
 
+    <ListPreference
+        android:defaultValue="@array/empty_array"
+        android:entries="@array/supportedLanguagesArray"
+        android:entryValues="@array/supportedLanguagesValues"
+        android:key="pref_language_app"
+        android:summary="@string/pref_description_language_app"
+        android:title="@string/pref_language_app" />
+    />
+
     <ListPreference
         android:title="@string/pref_title_app_theme"
         android:summary="@string/pref_description_app_theme"