Implemented configuration block to access other setting like font scale.

README.md

@@ -57,6 +57,11 @@ class MyApp : Application() {
     private val localeAppDelegate = LocaleHelperApplicationDelegate()
 
     override fun attachBaseContext(base: Context) {
+        LocaleHelper.configurationBlock = {
+	    //Access configuration object to set exta setting
+	    //For eg: FontScale
+            it.fontScale = 1.0f 
+        }
         super.attachBaseContext(localeAppDelegate.attachBaseContext(base))
     }
 
@@ -77,6 +82,11 @@ open class BaseActivity : AppCompatActivity() {
     override fun getDelegate() = localeDelegate.getAppCompatDelegate(super.getDelegate())
 
     override fun attachBaseContext(newBase: Context) {
+    	LocaleHelper.configurationBlock = {
+	    //Access configuration object to set exta setting
+	    //For eg: FontScale
+            it.fontScale = 1.0f 
+        }
         super.attachBaseContext(localeDelegate.attachBaseContext(newBase))
     }
 

app/src/main/java/com/zeugmasolutions/localeexample/Application.kt

@@ -5,14 +5,24 @@ import androidx.appcompat.app.AppCompatDelegate
 import androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
 import androidx.multidex.MultiDex
 import com.zeugmasolutions.localehelper.LocaleAwareApplication
+import com.zeugmasolutions.localehelper.LocaleHelper
 
 class Application : LocaleAwareApplication() {
+
+    companion object {
+        var FONT_SCALE = 1.0f
+    }
+
     override fun onCreate() {
         super.onCreate()
         AppCompatDelegate.setDefaultNightMode(MODE_NIGHT_FOLLOW_SYSTEM)
     }
 
     override fun attachBaseContext(base: Context) {
+        LocaleHelper.configurationBlock = {
+            it.fontScale = FONT_SCALE
+        }
+
         super.attachBaseContext(base)
         MultiDex.install(this)
     }

app/src/main/java/com/zeugmasolutions/localeexample/BaseActivity.kt

@@ -1,13 +1,23 @@
 package com.zeugmasolutions.localeexample
 
+import android.content.Context
 import android.view.Menu
 import android.view.MenuItem
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_NO
 import androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_YES
 import com.zeugmasolutions.localehelper.LocaleAwareCompatActivity
+import com.zeugmasolutions.localehelper.LocaleHelper
 
 open class BaseActivity : LocaleAwareCompatActivity() {
+
+    override fun attachBaseContext(newBase: Context) {
+        LocaleHelper.configurationBlock = {
+            it.fontScale = Application.FONT_SCALE
+        }
+        super.attachBaseContext(newBase)
+    }
+
     override fun onCreateOptionsMenu(menu: Menu?): Boolean {
         menuInflater.inflate(R.menu.main_menu, menu)
         return true

app/src/main/java/com/zeugmasolutions/localeexample/MainActivity.kt

@@ -1,11 +1,14 @@
 package com.zeugmasolutions.localeexample
 
 import android.content.Intent
+import android.os.Build
 import android.os.Bundle
+import android.widget.SeekBar
 import com.zeugmasolutions.localehelper.Locales
 import kotlinx.android.synthetic.main.activity_main.*
 import kotlinx.android.synthetic.main.view_language_buttons.*
 import java.util.*
+import kotlin.math.roundToInt
 
 class MainActivity : BaseActivity() {
 
@@ -21,8 +24,33 @@ class MainActivity : BaseActivity() {
         toURButton.setOnClickListener { updateLocale(Locales.Urdu) }
 
         secondButton.setOnClickListener { startActivity(Intent(this, SecondActivity::class.java)) }
+
+        fontSizeSeekbar.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {
+            override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+                    fontSizeSeekbar?.setProgress(progress, true)
+                }
+            }
+
+            override fun onStartTrackingTouch(seekBar: SeekBar?) {}
+
+            override fun onStopTrackingTouch(seekBar: SeekBar?) {
+                seekBar?.run {
+                    Application.FONT_SCALE = getFontScale(progress)
+                    recreate()
+                }
+            }
+
+        })
+
+        fontSizeSeekbar.max = 3
+        fontSizeSeekbar.progress = getSeekBarProgress(resources.configuration.fontScale)
     }
 
+    private fun getSeekBarProgress(fontScale: Float) = ((fontScale - 0.8F) / 1.5F).roundToInt()
+
+    private fun getFontScale(progressValue: Int) = 0.8F + (progressValue * 1.5F)
+
     override fun updateLocale(locale: Locale) {
         super.updateLocale(locale)
         setTitle(R.string.main_activity_title)

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

@@ -1,44 +1,66 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-              xmlns:tools="http://schemas.android.com/tools"
-              android:id="@+id/activity_main"
-              android:layout_width="match_parent"
-              android:layout_height="match_parent"
-              android:orientation="vertical"
-              android:paddingBottom="@dimen/activity_vertical_margin"
-              android:paddingLeft="@dimen/activity_horizontal_margin"
-              android:paddingRight="@dimen/activity_horizontal_margin"
-              android:paddingTop="@dimen/activity_vertical_margin"
-              tools:context=".MainActivity">
-
-    <TextView
-            android:id="@+id/titleTextView"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:text="@string/main_activity_title"
-            android:textStyle="bold"/>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:tools="http://schemas.android.com/tools"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:fillViewport="true">
 
-    <TextView
-            android:id="@+id/descTextView"
-            android:layout_width="wrap_content"
+    <LinearLayout
+            android:id="@+id/activity_main"
+            android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:layout_marginTop="@dimen/activity_vertical_margin"
-            android:text="@string/main_activity_desc"/>
+            android:orientation="vertical"
+            android:paddingLeft="@dimen/activity_horizontal_margin"
+            android:paddingTop="@dimen/activity_vertical_margin"
+            android:paddingRight="@dimen/activity_horizontal_margin"
+            android:paddingBottom="@dimen/activity_vertical_margin"
+            tools:context=".MainActivity">
 
-    <TextView
-            android:id="@+id/aboutTextView"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginTop="@dimen/activity_vertical_margin"
-            android:text="@string/main_activity_about"/>
-
-    <include layout="@layout/view_language_buttons"/>
-
-    <com.google.android.material.button.MaterialButton
-            style="@style/AppTheme.Button.Text"
-            android:layout_marginTop="@dimen/activity_vertical_margin"
-            android:text="@string/main_second_activity"
-            android:id="@+id/secondButton"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"/>
-</LinearLayout>
+        <TextView
+                android:id="@+id/titleTextView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/main_activity_title"
+                android:textStyle="bold" />
+
+        <TextView
+                android:id="@+id/descTextView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="@dimen/activity_vertical_margin"
+                android:text="@string/main_activity_desc" />
+
+        <TextView
+                android:id="@+id/aboutTextView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="@dimen/activity_vertical_margin"
+                android:text="@string/main_activity_about" />
+
+        <include layout="@layout/view_language_buttons" />
+
+        <com.google.android.material.button.MaterialButton
+                android:id="@+id/secondButton"
+                style="@style/AppTheme.Button.Text"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="@dimen/activity_vertical_margin"
+                android:text="@string/main_second_activity" />
+
+        <TextView
+                android:id="@+id/fontSizeTextView"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:text="@string/accessibality_font_size"
+                android:textStyle="bold" />
+
+        <SeekBar
+                android:id="@+id/fontSizeSeekbar"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="8dp"
+                android:paddingTop="4dp"
+                android:paddingBottom="4dp" />
+    </LinearLayout>
+</ScrollView>

app/src/main/res/values-tr-rTR/strings.xml

@@ -13,5 +13,6 @@
     <string name="main_second_activity">Ikinci sayfa ></string>
     <string name="back_button"><![CDATA[< Geri]]></string>
     <string name="main_activity_to_ur_button">Urduca</string>
+    <string name="accessibality_font_size">Erişilebilirlik: Yazı Tipi Boyutu</string>
 
 </resources>

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

@@ -12,5 +12,6 @@
     <string name="main_second_activity">دوسرا صفحہ></string>
     <string name="back_button"><![CDATA[واپس جاؤ]]></string>
     <string name="main_activity_to_ur_button">اردو</string>
+    <string name="accessibality_font_size">رسائی: فونٹ سائز</string>
 
 </resources>

app/src/main/res/values-zh-rCN/strings.xml

@@ -13,5 +13,6 @@
     <string name="main_second_activity">第二页 ></string>
     <string name="back_button"><![CDATA[< 回去]]></string>
     <string name="main_activity_to_ur_button">乌尔都语</string>
+    <string name="accessibality_font_size">輔助功能：字體大小</string>
 
 </resources>

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

@@ -14,4 +14,5 @@
     <string name="main_activity_to_ur_button">Urdu</string>
     <string name="dark" translatable="false">Dark</string>
     <string name="light" translatable="false">Light</string>
+    <string name="accessibality_font_size">Accessibality: Font Size</string>
 </resources>

gradle/wrapper/gradle-wrapper.properties

@@ -1,4 +1,4 @@
-#Sun Apr 19 15:29:34 BST 2020
+#Fri Jun 12 03:43:17 GST 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME

localehelper/src/main/java/com/zeugmasolutions/localehelper/LocaleHelper.kt

@@ -2,6 +2,7 @@ package com.zeugmasolutions.localehelper
 
 import android.content.Context
 import android.content.SharedPreferences
+import android.content.res.Configuration
 import android.os.Build
 import java.util.*
 
@@ -10,6 +11,8 @@ object LocaleHelper {
     private const val SELECTED_COUNTRY = "Locale.Helper.Selected.Country"
     private var initialized = false
 
+    var configurationBlock: ((Configuration) -> Unit)? = null
+
     /**
      * Attach the selected or default [Locale] to the [context]
      */
@@ -68,6 +71,8 @@ object LocaleHelper {
             configuration.setLayoutDirection(locale)
         }
 
+        configurationBlock?.invoke(configuration)
+
         return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
             context.createConfigurationContext(configuration)
         } else {