Увеличивает ширину кнопки

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/layout">

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="getWider"
        android:text="Button"
        android:textAllCaps="false"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:id="@+id/button" />

</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.java

package com.example.widthbutton;

import androidx.appcompat.app.AppCompatActivity;
import androidx.constraintlayout.widget.ConstraintLayout;
import androidx.constraintlayout.widget.ConstraintSet;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void getWider(View view) {
        Button btn = (Button) view;
        int currentWidth = btn.getWidth();

        ConstraintLayout layout = findViewById(R.id.layout);

        ConstraintSet set = new ConstraintSet();
        set.clone(layout);

        set.connect(btn.getId(), ConstraintSet.LEFT, layout.getId(), ConstraintSet.LEFT, 0);
        set.connect(btn.getId(), ConstraintSet.RIGHT, layout.getId(), ConstraintSet.RIGHT, 0);
        set.connect(btn.getId(), ConstraintSet.BOTTOM, layout.getId(), ConstraintSet.BOTTOM, 0);
        set.connect(btn.getId(), ConstraintSet.TOP, layout.getId(), ConstraintSet.TOP, 0);

        set.constrainWidth(btn.getId(), currentWidth + 20);
        set.constrainHeight(btn.getId(), ConstraintSet.WRAP_CONTENT);
        set.applyTo(layout);
    }
}