adding a switch for forcing english language

app/build.gradle

@@ -37,7 +37,7 @@ android {
 }
 
 dependencies {
-    implementation 'com.simplemobiletools:commons:3.0.21'
+    implementation 'com.simplemobiletools:commons:3.0.23'
     implementation 'com.squareup:otto:1.3.8'
 }
 

app/src/main/AndroidManifest.xml

@@ -17,6 +17,7 @@
         android:required="true"/>
 
     <application
+        android:name=".App"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_launcher_name"

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

@@ -0,0 +1,11 @@
+package com.simplemobiletools.flashlight
+
+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/flashlight/activities/MainActivity.kt

@@ -29,6 +29,7 @@ class MainActivity : SimpleActivity() {
     private var mBus: Bus? = null
     private var mCameraImpl: MyCameraImpl? = null
     private var translucentWhite = 0
+    private var mStoredUseEnglish = false
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -49,10 +50,16 @@ class MainActivity : SimpleActivity() {
         }
 
         setupStroboscope()
+        storeStateVariables()
     }
 
     override fun onResume() {
         super.onResume()
+        if (mStoredUseEnglish != config.useEnglish) {
+            restartActivity()
+            return
+        }
+
         mCameraImpl!!.handleCameraSetup()
         checkState(MyCameraImpl.isFlashlightOn)
 
@@ -74,6 +81,11 @@ class MainActivity : SimpleActivity() {
         }
     }
 
+    override fun onPause() {
+        super.onPause()
+        storeStateVariables()
+    }
+
     override fun onStop() {
         super.onStop()
         mBus!!.unregister(this)
@@ -98,6 +110,12 @@ class MainActivity : SimpleActivity() {
         return true
     }
 
+    private fun storeStateVariables() {
+        config.apply {
+            mStoredUseEnglish = useEnglish
+        }
+    }
+
     private fun launchSettings() {
         startActivity(Intent(applicationContext, SettingsActivity::class.java))
     }

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

@@ -1,10 +1,13 @@
 package com.simplemobiletools.flashlight.activities
 
 import android.os.Bundle
+import com.simplemobiletools.commons.extensions.beVisibleIf
 import com.simplemobiletools.commons.extensions.updateTextColors
+import com.simplemobiletools.commons.extensions.useEnglishToggled
 import com.simplemobiletools.flashlight.R
 import com.simplemobiletools.flashlight.extensions.config
 import kotlinx.android.synthetic.main.activity_settings.*
+import java.util.*
 
 class SettingsActivity : SimpleActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -16,6 +19,7 @@ class SettingsActivity : SimpleActivity() {
         super.onResume()
 
         setupCustomizeColors()
+        setupUseEnglish()
         setupBrightDisplay()
         setupStroboscope()
         updateTextColors(settings_holder)
@@ -27,6 +31,16 @@ 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 setupBrightDisplay() {
         settings_bright_display.isChecked = config.brightDisplay
         settings_bright_display_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_bright_display_holder"
             android:layout_width="match_parent"