adding a toggle for forcing english

app/src/main/AndroidManifest.xml

@@ -9,6 +9,7 @@
         tools:node="remove"/>
 
     <application
+        android:name=".App"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_launcher_name"

app/src/main/kotlin/com/simplemobiletools/thankyou/App.kt

@@ -0,0 +1,11 @@
+package com.simplemobiletools.thankyou
+
+import android.app.Application
+import com.simplemobiletools.commons.extensions.checkUseEnglish
+
+class App : Application() {
+    override fun onCreate() {
+        super.onCreate()
+        checkUseEnglish()
+    }
+}

app/src/main/kotlin/com/simplemobiletools/thankyou/activities/MainActivity.kt

@@ -6,27 +6,41 @@ import android.view.Menu
 import android.view.MenuItem
 import com.simplemobiletools.commons.extensions.appLaunched
 import com.simplemobiletools.commons.extensions.checkWhatsNew
+import com.simplemobiletools.commons.extensions.restartActivity
 import com.simplemobiletools.commons.extensions.updateTextColors
 import com.simplemobiletools.commons.helpers.LICENSE_KOTLIN
 import com.simplemobiletools.commons.models.Release
 import com.simplemobiletools.thankyou.BuildConfig
 import com.simplemobiletools.thankyou.R
+import com.simplemobiletools.thankyou.extensions.config
 import kotlinx.android.synthetic.main.activity_main.*
 
 class MainActivity : SimpleActivity() {
+    var storedUseEnglish = false
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
         appLaunched()
         checkWhatsNewDialog()
+        storeStateVariables()
     }
 
     override fun onResume() {
         super.onResume()
+        if (storedUseEnglish != config.useEnglish) {
+            restartActivity()
+            return
+        }
+
         updateTextColors(activity_main)
     }
 
+    override fun onPause() {
+        super.onPause()
+        storeStateVariables()
+    }
+
     override fun onCreateOptionsMenu(menu: Menu): Boolean {
         menuInflater.inflate(R.menu.menu_main, menu)
         return true
@@ -41,6 +55,12 @@ class MainActivity : SimpleActivity() {
         return true
     }
 
+    private fun storeStateVariables() {
+        config.apply {
+            storedUseEnglish = useEnglish
+        }
+    }
+
     private fun launchSettings() {
         startActivity(Intent(this, SettingsActivity::class.java))
     }

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

@@ -4,10 +4,13 @@ import android.content.ComponentName
 import android.content.pm.PackageManager
 import android.os.Bundle
 import com.simplemobiletools.commons.dialogs.ConfirmationDialog
+import com.simplemobiletools.commons.extensions.beVisibleIf
 import com.simplemobiletools.commons.extensions.updateTextColors
+import com.simplemobiletools.commons.extensions.useEnglishToggled
 import com.simplemobiletools.thankyou.R
 import com.simplemobiletools.thankyou.extensions.config
 import kotlinx.android.synthetic.main.activity_settings.*
+import java.util.*
 
 class SettingsActivity : SimpleActivity() {
 
@@ -20,6 +23,7 @@ class SettingsActivity : SimpleActivity() {
         super.onResume()
 
         setupCustomizeColors()
+        setupUseEnglish()
         setupHideLauncherIcon()
         updateTextColors(settings_holder)
     }
@@ -30,6 +34,16 @@ class SettingsActivity : SimpleActivity() {
         }
     }
 
+    private fun setupUseEnglish() {
+        settings_use_english_holder.beVisibleIf(config.wasUseEnglishToggled || Locale.getDefault().language != "en")
+        settings_use_english.isChecked = config.useEnglish
+        settings_use_english_holder.setOnClickListener {
+            settings_use_english.toggle()
+            config.useEnglish = settings_use_english.isChecked
+            useEnglishToggled()
+        }
+    }
+
     private fun setupHideLauncherIcon() {
         settings_hide_launcher_icon.isChecked = config.hideLauncherIcon
         settings_hide_launcher_icon_holder.setOnClickListener {

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

@@ -30,6 +30,26 @@
 
         </RelativeLayout>
 
+        <RelativeLayout
+            android:id="@+id/settings_use_english_holder"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="@dimen/medium_margin"
+            android:background="?attr/selectableItemBackground"
+            android:padding="@dimen/activity_margin">
+
+            <com.simplemobiletools.commons.views.MySwitchCompat
+                android:id="@+id/settings_use_english"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="@null"
+                android:clickable="false"
+                android:paddingLeft="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:text="@string/use_english_language"/>
+
+        </RelativeLayout>
+
         <RelativeLayout
             android:id="@+id/settings_hide_launcher_icon_holder"
             android:layout_width="match_parent"