allow toggling between russian and english keyboard language

app/build.gradle

@@ -64,7 +64,7 @@ android {
 }
 
 dependencies {
-    implementation 'com.github.SimpleMobileTools:Simple-Commons:49c2c3da51'
+    implementation 'com.github.SimpleMobileTools:Simple-Commons:81809a9339'
 
     kapt 'androidx.room:room-compiler:2.3.0'
     implementation 'androidx.room:room-runtime:2.3.0'

app/src/main/kotlin/com/simplemobiletools/keyboard/activities/SettingsActivity.kt

@@ -3,9 +3,13 @@ package com.simplemobiletools.keyboard.activities
 import android.content.Intent
 import android.os.Bundle
 import android.view.Menu
+import com.simplemobiletools.commons.dialogs.RadioGroupDialog
 import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.models.RadioItem
 import com.simplemobiletools.keyboard.R
 import com.simplemobiletools.keyboard.extensions.config
+import com.simplemobiletools.keyboard.helpers.LANGUAGE_ENGLISH
+import com.simplemobiletools.keyboard.helpers.LANGUAGE_RUSSIAN
 import kotlinx.android.synthetic.main.activity_settings.*
 import java.util.*
 import kotlin.system.exitProcess
@@ -26,6 +30,7 @@ class SettingsActivity : SimpleActivity() {
         setupManageClipboardItems()
         setupVibrateOnKeypress()
         setupShowPopupOnKeypress()
+        setupKeyboardLanguage()
 
         updateTextColors(settings_scrollview)
 
@@ -101,4 +106,26 @@ class SettingsActivity : SimpleActivity() {
             config.showPopupOnKeypress = settings_show_popup_on_keypress.isChecked
         }
     }
+
+    private fun setupKeyboardLanguage() {
+        settings_keyboard_language.text = getKeyboardLanguageText()
+        settings_keyboard_language_holder.setOnClickListener {
+            val items = arrayListOf(
+                RadioItem(LANGUAGE_ENGLISH, getString(R.string.translation_english)),
+                RadioItem(LANGUAGE_RUSSIAN, getString(R.string.translation_russian))
+            )
+
+            RadioGroupDialog(this@SettingsActivity, items, config.keyboardLanguage) {
+                config.keyboardLanguage = it as Int
+                settings_keyboard_language.text = getKeyboardLanguageText()
+            }
+        }
+    }
+
+    fun getKeyboardLanguageText() = getString(
+        when (config.keyboardLanguage) {
+            LANGUAGE_RUSSIAN -> R.string.translation_russian
+            else -> R.string.translation_english
+        }
+    )
 }

app/src/main/kotlin/com/simplemobiletools/keyboard/helpers/Config.kt

@@ -2,6 +2,7 @@ package com.simplemobiletools.keyboard.helpers
 
 import android.content.Context
 import com.simplemobiletools.commons.helpers.BaseConfig
+import java.util.*
 
 class Config(context: Context) : BaseConfig(context) {
     companion object {
@@ -20,7 +21,16 @@ class Config(context: Context) : BaseConfig(context) {
         get() = prefs.getString(LAST_EXPORTED_CLIPS_FOLDER, "")!!
         set(lastExportedClipsFolder) = prefs.edit().putString(LAST_EXPORTED_CLIPS_FOLDER, lastExportedClipsFolder).apply()
 
-    var keyboardLanguage: String
-        get() = prefs.getString(KEYBOARD_LANGUAGE, "en")!!
-        set(keyboardLanguage) = prefs.edit().putString(KEYBOARD_LANGUAGE, keyboardLanguage).apply()
+    var keyboardLanguage: Int
+        get() = prefs.getInt(KEYBOARD_LANGUAGE, getDefaultLanguage())
+        set(keyboardLanguage) = prefs.edit().putInt(KEYBOARD_LANGUAGE, keyboardLanguage).apply()
+
+    private fun getDefaultLanguage(): Int {
+        val conf = context.resources.configuration
+        return if (conf.locale.toString().toLowerCase(Locale.getDefault()).startsWith("ru_")) {
+            LANGUAGE_RUSSIAN
+        } else {
+            LANGUAGE_ENGLISH
+        }
+    }
 }

app/src/main/kotlin/com/simplemobiletools/keyboard/helpers/Constants.kt

@@ -16,3 +16,6 @@ const val KEYBOARD_LANGUAGE = "keyboard_language"
 // differentiate current and pinned clips at the keyboards' Clipboard section
 const val ITEM_SECTION_LABEL = 0
 const val ITEM_CLIP = 1
+
+const val LANGUAGE_ENGLISH = 0
+const val LANGUAGE_RUSSIAN = 1

app/src/main/kotlin/com/simplemobiletools/keyboard/services/SimpleKeyboardIME.kt

@@ -10,10 +10,7 @@ import android.view.inputmethod.EditorInfo.IME_ACTION_NONE
 import android.view.inputmethod.ExtractedTextRequest
 import com.simplemobiletools.keyboard.R
 import com.simplemobiletools.keyboard.extensions.config
-import com.simplemobiletools.keyboard.helpers.MyKeyboard
-import com.simplemobiletools.keyboard.helpers.SHIFT_OFF
-import com.simplemobiletools.keyboard.helpers.SHIFT_ON_ONE_CHAR
-import com.simplemobiletools.keyboard.helpers.SHIFT_ON_PERMANENT
+import com.simplemobiletools.keyboard.helpers.*
 import com.simplemobiletools.keyboard.views.MyKeyboardView
 import kotlinx.android.synthetic.main.keyboard_view_keyboard.view.*
 
@@ -216,7 +213,7 @@ class SimpleKeyboardIME : InputMethodService(), MyKeyboardView.OnKeyboardActionL
 
     private fun getKeyboardLayoutXML(): Int {
         return when (baseContext.config.keyboardLanguage) {
-            "ru" -> R.xml.keys_letters_russian
+            LANGUAGE_RUSSIAN -> R.xml.keys_letters_russian
             else -> R.xml.keys_letters_english
         }
     }

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

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/settings_scrollview"
     android:layout_width="match_parent"
     android:layout_height="wrap_content">
@@ -126,7 +127,7 @@
                 style="@style/SettingsHolderCheckboxStyle"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:background="@drawable/ripple_bottom_corners">
+                android:background="@drawable/ripple_background">
 
                 <com.simplemobiletools.commons.views.MyAppCompatCheckbox
                     android:id="@+id/settings_show_popup_on_keypress"
@@ -136,6 +137,30 @@
                     android:text="@string/show_popup" />
 
             </RelativeLayout>
+
+            <RelativeLayout
+                android:id="@+id/settings_keyboard_language_holder"
+                style="@style/SettingsHolderTextViewStyle"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="@drawable/ripple_bottom_corners">
+
+                <com.simplemobiletools.commons.views.MyTextView
+                    android:id="@+id/settings_keyboard_language_label"
+                    style="@style/SettingsTextLabelStyle"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/keyboard_language" />
+
+                <com.simplemobiletools.commons.views.MyTextView
+                    android:id="@+id/settings_keyboard_language"
+                    style="@style/SettingsTextValueStyle"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_below="@+id/settings_keyboard_language_label"
+                    tools:text="@string/translation_english" />
+
+            </RelativeLayout>
         </LinearLayout>
     </LinearLayout>
 </ScrollView>