update the font size after it gets changed in the app settings

app/src/main/kotlin/com/simplemobiletools/contacts/pro/activities/MainActivity.kt

@@ -59,6 +59,7 @@ class MainActivity : SimpleActivity(), RefreshContactsListener {
     private var storedShowContactThumbnails = false
     private var storedShowPhoneNumbers = false
     private var storedStartNameWithSurname = false
+    private var storedFontSize = 0
     private var storedShowTabs = 0
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -137,6 +138,13 @@ class MainActivity : SimpleActivity(), RefreshContactsListener {
             favorites_fragment?.startNameWithSurnameChanged(configStartNameWithSurname)
         }
 
+        val configFontSize = config.fontSize
+        if (storedFontSize != configFontSize) {
+            getAllFragments().forEach {
+                it?.fontSizeChanged()
+            }
+        }
+
         if (werePermissionsHandled && !isFirstResume) {
             if (viewpager.adapter == null) {
                 initFragments()
@@ -218,6 +226,7 @@ class MainActivity : SimpleActivity(), RefreshContactsListener {
             storedShowPhoneNumbers = showPhoneNumbers
             storedStartNameWithSurname = startNameWithSurname
             storedShowTabs = showTabs
+            storedFontSize = fontSize
         }
     }
 

app/src/main/kotlin/com/simplemobiletools/contacts/pro/fragments/MyViewPagerFragment.kt

@@ -232,6 +232,20 @@ abstract class MyViewPagerFragment(context: Context, attributeSet: AttributeSet)
         }
     }
 
+    fun fontSizeChanged() {
+        if (this is GroupsFragment) {
+            (fragment_list.adapter as? GroupsAdapter)?.apply {
+                fontSize = activity.getTextSize()
+                notifyDataSetChanged()
+            }
+        } else {
+            (fragment_list.adapter as? ContactsAdapter)?.apply {
+                fontSize = activity.getTextSize()
+                notifyDataSetChanged()
+            }
+        }
+    }
+
     fun onActivityResume() {
         updateViewStuff()
     }