feat: add multi language support

app/src/main/java/chat/rocket/android/main/ui/MainActivity.kt

@@ -4,6 +4,8 @@ import DrawableHelper
 import android.app.Activity
 import android.app.AlertDialog
 import android.app.ProgressDialog
+import android.content.Context
+import android.content.res.Configuration
 import android.os.Bundle
 import androidx.annotation.IdRes
 import androidx.appcompat.app.AppCompatActivity
@@ -36,6 +38,7 @@ import dagger.android.support.HasSupportFragmentInjector
 import kotlinx.android.synthetic.main.activity_main.*
 import kotlinx.android.synthetic.main.app_bar.*
 import kotlinx.android.synthetic.main.nav_header.view.*
+import java.util.Locale
 import javax.inject.Inject
 
 private const val CURRENT_STATE = "current_state"
@@ -257,4 +260,53 @@ class MainActivity : AppCompatActivity(), MainView, HasActivityInjector,
         progressDialog?.dismiss()
         progressDialog = null
     }
+
+      fun changeLanguage(){
+        val languages = arrayOf("English", "Hindi", "Japanese", "Russian", "Italian")
+
+        val builder = AlertDialog.Builder(this)
+        builder.setTitle("Choose Language")
+        builder.setSingleChoiceItems(languages,-1) { dialog, which ->
+            if (which==0){
+                setLocale("en")
+                recreate()
+            }else if (which==1){
+                setLocale("hi")
+                recreate()
+            }else if (which==2){
+                setLocale("ja")
+                recreate()
+            }else if (which==3){
+                setLocale("ru")
+                recreate()
+            }else if (which==4){
+                setLocale("it")
+                recreate()
+            }
+            dialog.dismiss()
+        }
+            val mdialog=builder.create()
+            mdialog.show()
+    }
+
+     fun setLocale(lang: String) {
+         val locale = Locale(lang)
+        Locale.setDefault(locale)
+        val config = Configuration()
+        config.locale = locale
+        baseContext.resources.updateConfiguration(config, baseContext.resources.displayMetrics)
+
+        val editor = getSharedPreferences("Settings", Context.MODE_PRIVATE).edit()
+        editor.putString("My_Lang", lang)
+        editor.apply()
+    }
+
+    private fun loadLocale(){
+        val sharedPreferences =getSharedPreferences("settings",Activity.MODE_PRIVATE)
+        val language = sharedPreferences.getString("My_Lang","")
+        setLocale(language)
+    }
+
+
+
 }

app/src/main/java/chat/rocket/android/settings/ui/SettingsFragment.kt

@@ -73,20 +73,22 @@ class SettingsFragment : Fragment(), SettingsView, AdapterView.OnItemClickListen
             resources.getStringArray(R.array.settings_actions)[1] ->
                 activity?.startActivity(Intent(activity, PasswordActivity::class.java))
 
-            resources.getStringArray(R.array.settings_actions)[2] -> shareApp()
+            resources.getStringArray(R.array.settings_actions)[2] -> (activity as? MainActivity)?.changeLanguage()
 
-            resources.getStringArray(R.array.settings_actions)[3] -> showAppOnStore()
+            resources.getStringArray(R.array.settings_actions)[3] -> shareApp()
 
-            resources.getStringArray(R.array.settings_actions)[4] -> contactSupport()
+            resources.getStringArray(R.array.settings_actions)[4] -> showAppOnStore()
 
-            resources.getStringArray(R.array.settings_actions)[5] -> activity?.startActivity(
+            resources.getStringArray(R.array.settings_actions)[5] -> contactSupport()
+
+            resources.getStringArray(R.array.settings_actions)[6] -> activity?.startActivity(
                 context?.webViewIntent(
                     getString(R.string.license_url),
                     getString(R.string.title_licence)
                 )
             )
 
-            resources.getStringArray(R.array.settings_actions)[6] -> {
+            resources.getStringArray(R.array.settings_actions)[7] -> {
                 (activity as AppCompatActivity).addFragmentBackStack(
                     TAG_ABOUT_FRAGMENT,
                     R.id.fragment_container
@@ -97,6 +99,7 @@ class SettingsFragment : Fragment(), SettingsView, AdapterView.OnItemClickListen
         }
     }
 
+
     private fun showAppOnStore() {
         try {
             startActivity(Intent(Intent.ACTION_VIEW, getString(R.string.market_link).toUri()))

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

@@ -5,10 +5,10 @@
     <item
         android:id="@+id/action_terms_of_Service"
         android:title="@string/action_terms_of_service"
-        app:showAsAction="never" />
+        android:showAsAction="never" />
 
     <item
         android:id="@+id/action_privacy_policy"
         android:title="@string/action_privacy_policy"
-        app:showAsAction="never" />
+        android:showAsAction="never" />
 </menu>
\ No newline at end of file

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

@@ -5,6 +5,6 @@
     <item
         android:id="@+id/action_delete_account"
         android:title="@string/action_delete_account"
-        app:showAsAction="never" />
+        android:showAsAction="never" />
 
 </menu>
\ No newline at end of file

app/src/main/res/values-hi-rIN/strings.xml

@@ -64,6 +64,7 @@
     <string-array name="settings_actions">
         <item name="item_preferences">पसंद</item>
         <item name="item_password">पासवर्ड बदलें</item>
+        <item name="change_language">भाषा बदलें</item>
         <item name="item_share_app">ऐप शेयर करें</item>
         <item name="item_rate_us">हमें रेटिंग दें</item>
         <item name="item_contact_us">हमसे संपर्क करें</item>

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

@@ -64,6 +64,7 @@
     <string-array name="settings_actions">
         <item name="item_preferences">Preferenze</item>
         <item name="item_password">Cambia password</item>
+        <item name="change_language">Cambia lingua</item>
         <item name="item_share_app">Condividi app</item>
         <item name="item_rate_us">Votaci</item>
         <item name="item_contact_us">Contattaci</item>

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

@@ -22,11 +22,11 @@
     <string name="title_admin_panel">管理パネル</string>
     <string name="title_password">パスワードの変更</string>
     <string name="title_update_profile">プロフィールの更新</string>
-    <string name="title_about">About</string>
-    <string name="title_licence">Licence</string> <!-- TODO Add translation -->
+    <string name="title_about">約</string>
+    <string name="title_licence">ライセンス</string>
     <string name="title_create_channel">新しいチャネルを作成</string>
     <string name="title_are_you_sure">本気ですか？</string>
-    <string name="title_channel_details">Channel Details</string> <!-- TODO add translation -->
+    <string name="title_channel_details">チャンネルの詳細</string>
     <string name="title_topic">トピック</string>
     <string name="title_announcement">発表</string>
     <string name="title_description">説明</string>
@@ -42,7 +42,7 @@
     <string name="action_create_channel">チャンネル作成</string>
     <string name="action_create">作ります</string>
     <string name="action_logout">ログアウト</string>
-    <string name="action_attach_a_files">Attach a file</string> <!-- TODO Add translation -->
+    <string name="action_attach_a_files">Attach a file</string>
     <string name="action_confirm_password">変更したパスワードの確認</string>
     <string name="action_join_chat">チャットに参加</string>
     <string name="action_add_account">サーバーの追加</string>
@@ -64,13 +64,14 @@
 
     <!-- Settings List -->
     <string-array name="settings_actions">
-        <item name="item_preferences">Preferences</item> <!-- TODO Add translation -->
-        <item name="item_password">Change password</item> <!-- TODO Add translation -->
-        <item name="item_share_app">Share app</item> <!-- TODO Add translation -->
-        <item name="item_rate_us">Rate us</item> <!-- TODO Add translation -->
-        <item name="item_contact_us">Contact us</item> <!-- TODO Add translation -->
-        <item name="item_licence">Licence</item> <!-- TODO Add translation -->
-        <item name="item_about">About</item> <!-- TODO Add translation -->
+        <item name="item_preferences">設定</item>
+        <item name="item_password">パスワードを変更する</item>
+        <item name="change_language">言語を変えてください</item>
+        <item name="item_share_app">アプリを共有する</item>
+        <item name="item_rate_us">私たちを評価してください</item>
+        <item name="item_contact_us">お問い合わせ</item>
+        <item name="item_licence">ライセンス</item>
+        <item name="item_about">約</item>
     </string-array>
 
     <!-- Regular information messages -->
@@ -165,9 +166,9 @@
     <string name="msg_view_more">更に表示</string>
     <string name="msg_view_less">隠す</string>
     <string name="msg_muted_on_this_channel">あなたはこのチャンネルでミュートされています</string>
-    <string name="msg_no_topic">No topic added</string> <!-- TODO Add translation -->
-    <string name="msg_no_announcement">No announcement added</string> <!-- TODO Add translation -->
-    <string name="msg_no_description">No description added</string> <!-- TODO Add translation -->
+    <string name="msg_no_topic">トピックが追加されていない</string>
+    <string name="msg_no_announcement">お知らせが追加されていません</string>
+    <string name="msg_no_description">説明が追加されていない</string>
     <!-- TODO - Add proper translation -->
     <plurals name="msg_reacted_with_">
         <item quantity="one">%1$s reacted with %2$s</item>
@@ -189,8 +190,8 @@
     <string name="msg_delete_message">メッセージを削除</string>
     <string name="msg_delete_description">このメッセージを削除してもよろしいですか?</string>
     <string name="msg_permalink_copied">パーマリンクのコピー</string>
-    <string name="msg_send_email">Send email</string> <!-- TODO - Add proper translation -->
-    <string name="msg_android_app_support">Android app support</string> <!-- TODO - Add proper translation -->
+    <string name="msg_send_email">メールを送る</string>
+    <string name="msg_android_app_support">Androidアプリのサポート</string>
 
     <!-- Preferences messages -->
     <string name="msg_analytics_tracking">トラッキングの分析</string>
@@ -339,13 +340,13 @@
     <string name="message_room_changed_privacy">ルームタイプを %2$s から %1$s に変更しました</string>
 
     <!-- User Details -->
-    <string name="message">Message</string> <!--TODO - Add proper translation-->
-    <string name="timezone">Timezone</string> <!--TODO - Add proper translation-->
-    <string name="error_opening_dm">Something went wrong while we were creating this conversation…</string> <!-- TODO - Add proper translation -->
-    <string name="retry">Retry</string> <!-- TODO - Add proper translation -->
+    <string name="message">メッセージ</string>
+    <string name="timezone">タイムゾーン</string>
+    <string name="error_opening_dm">この会話を作成しているうちに何か問題が発生しました…</string>
+    <string name="retry">リトライ</string>
 
     <!-- Report -->
-    <string name="submit">Submit</string> <!--TODO - Add proper translation-->
-    <string name="required">*required</string> <!--TODO - Add proper translation-->
-    <string name="report_sent">Your report has been sent!</string> <!--TODO - Add proper translation-->
+    <string name="submit">提出する</string>
+    <string name="required">*必須</string>
+    <string name="report_sent">あなたのレポートが送信されました！</string>
 </resources>

app/src/main/res/values-ru-rRU/strings.xml

@@ -64,6 +64,7 @@
     <string-array name="settings_actions">
         <item name="item_preferences">Персональные</item>
         <item name="item_password">Изменить пароль</item>
+        <item name="change_language">Изменить язык</item>
         <item name="item_share_app">Поделиться приложением</item>
         <item name="item_rate_us">Оцените нас</item>
         <item name="item_contact_us">Связаться с нами</item>

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

@@ -76,6 +76,7 @@ https://github.com/RocketChat/java-code-styles/blob/master/CODING_STYLE.md#strin
     <string-array name="settings_actions">
         <item name="item_preferences">Preferences</item>
         <item name="item_password">Change password</item>
+        <item name="change_language">Change Language </item>
         <item name="item_share_app">Share app</item>
         <item name="item_rate_us">Rate us</item>
         <item name="item_contact_us">Contact us</item>