Changing or setting one font for all text font in android in Kotlin

MyApp.kt

class MyApp : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        val typefaceUtil = TypefaceUtil()
        typefaceUtil.overridefonts(this,"SERIF","fonts/roboto.ttf")
    }
}

themes.xml

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        
<!-- you should set typeface which you want to override with TypefaceUtil -->
        <item name="android:typeface">serif</item>
    </style>

</resources>

TypefaceUtil.kt

import android.content.Context
import android.graphics.Typeface
import timber.log.Timber

class TypefaceUtil{
    fun overridefonts(context: Context, defaultFontToOverride:String, customFontFileNameInAssets:String){
        try {
            val customTypeface = Typeface.createFromAsset(context.assets,customFontFileNameInAssets)
            val defaultTypefaceField = Typeface::class.java.getDeclaredField(defaultFontToOverride)
            defaultTypefaceField.isAccessible = true
            defaultTypefaceField.set(null,customTypeface)
        }catch (e:Exception){
            Timber.e("Cannot set font $customFontFileNameInAssets instead of $defaultFontToOverride")
        }
    }
}

Is there away I can set default different fonts for bold and normal texts such that all normal texts have their own fonts while bold texts have different font?