How to change the Font Size in a whole Application programmatically, Android?

Question

I have created Spinner with the list of Font Sizes from \"8\" to \"46\" . I could be able to click the font Size and in a spinner it has shown me .

My need is, if i

Answer 1

I'm not sure if it help. But there is something called "SSP" - Scalable size Unit for Text. Add this to your build gradle

implementation 'com.intuit.ssp:ssp-android:1.0.6'

And this to use

android:textSize="@dimen/_22ssp"

https://github.com/intuit/ssp