Constrain button width to a max width

MainActivity.kt

package org.asheesh.fourbuttonsattwohundredpixels

import android.os.Bundle
import android.os.Handler
import android.util.DisplayMetrics
import android.view.View
import android.widget.Button
import android.widget.RelativeLayout
import android.widget.ScrollView
import androidx.appcompat.app.AppCompatActivity


class MainActivity : AppCompatActivity() {
    private lateinit var button1: Button
    private lateinit var button2: Button
    private lateinit var scrollThing: ScrollView
    private lateinit var dynamicLayout: RelativeLayout
    private var handler: Handler = Handler()


    override fun onCreate(savedInstanceState: Bundle?) {
        dynamicLayout = RelativeLayout(this)
        scrollThing = ScrollView(this)
        scrollThing.addView(dynamicLayout)
        setContentView(scrollThing)
        val displayMetrics = DisplayMetrics()
        windowManager.defaultDisplay.getMetrics(displayMetrics)
        val height: Int = displayMetrics.heightPixels
        val width: Int = displayMetrics.widthPixels
        println("width is ${width}")
        println("height is ${height}")

        button1 = Button(this)
        button1.text = "Kale chips food truck pop-up distillery prism. Craft beer art party copper mug shaman whatever quinoa try-hard synth meditation vexillologist mixtape readymade. Poutine microdosing keffiyeh, offal 8-bit chia twee. Salvia flexitarian coloring book sriracha meggings microdosing brunch vaporware craft beer. Fam green juice everyday carry, pitchfork forage retro health goth. Banjo messenger bag mlkshk VHS mumblecore austin single-origin coffee la croix. Whatever umami lumbersexual poutine organic marfa mustache raclette yuccie try-hard kickstarter tumblr cliche brooklyn food truck."
        val atMostFourHundred = View.MeasureSpec.makeMeasureSpec(400, View.MeasureSpec.AT_MOST);
        button1.measure(atMostFourHundred, View.MeasureSpec.UNSPECIFIED)
        println("Button1 measuredWidth after measure() ${button1.measuredWidth}")

        button2 = Button(this)
        button2.text = "Zounds"
        button2.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED)
        println("Button2 measuredWidth after measure() ${button2.measuredWidth}")

        //println("Button1 width ${button1.width}")
        dynamicLayout.addView(button1, RelativeLayout.LayoutParams(button1.measuredWidth, button1.measuredHeight))
        val params = RelativeLayout.LayoutParams(button2.measuredWidth, button2.measuredHeight)
        params.topMargin = 2000
        params.leftMargin = button1.measuredWidth + 70
        dynamicLayout.addView(button2, params )

        //println("Button1 width after addView ${button1.width}")
        //println("Button1 measuredWidth after addView ${button1.measuredWidth}")
        //println("Button1 width after measure() ${button1.width}")
        //println("Button1 maxWidth after measure() ${button1.maxWidth}")
        super.onCreate(savedInstanceState)
    }

    override fun onResume() {
        super.onResume()
        println("Button1 width in onResume ${button1.width}")
        println("Button1 measuredWidth in onResume ${button1.measuredWidth}")
        button1.measure(View.MeasureSpec.AT_MOST, View.MeasureSpec.AT_MOST)

        // Move button2 higher up, 2 sec later
        handler.postDelayed(Runnable {
            val params = RelativeLayout.LayoutParams(button2.measuredWidth, button2.measuredHeight)
            params.topMargin = 500
            params.leftMargin = button1.measuredWidth + 70
            dynamicLayout.updateViewLayout(button2, params)
        }, 2000)


    }
}