Control Text Size on Android Bottom Navigation View in android < 9 - xamarin.forms

Question

we have a few apps where we support android from Version 6 min to 10.
Now I have a bottom Navigation bar (tabbedpage) 5 tabs and when tapping on it , the title gets cut off.
In android 9 I have implemented as recommended https://montemagno.com/control-text-size-on-android-bottom-navigation/
and works ,but it does not work on android 7 as it clearly says "android 9"
<resources xmlns:tools="http://schemas.android.com/tools">
<dimen name="design_bottom_navigation_text_size" tools:override="true">10sp</dimen>
<dimen name="design_bottom_navigation_active_text_size" tools:override="true">12sp</dimen>
</resources>
Can the size of the text be changed on android 7 and how? I am using the latest xamarin.forms

Answer 1

You could set the font size in code behind .
in Resource-> Menu
define the tab item
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<item
android:id="#+id/action_settings_1"
android:orderInCategory="100"
android:title="111"
app:showAsAction="never" />
<item
android:id="#+id/action_settings_2"
android:orderInCategory="100"
android:title="222"
app:showAsAction="never" />
<item
android:id="#+id/action_settings_3"
android:orderInCategory="100"
android:title="333"
app:showAsAction="never" />
</menu>
in Resource-> Layout
Add the following code in content_main.xml
<android.support.design.widget.BottomNavigationView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/bottomNavigationView"
//... other property
app:menu="#menu/menu_main" />
in MainActivity
BottomNavigationView bottomNavigationView = FindViewById<BottomNavigationView>(Resource.Id.bottomNavigationView);
TextView textView = (TextView)bottomNavigationView.FindViewById(Resource.Id.action_settings).FindViewById(Resource.Id.largeLabel);
textView.TextSize=12;