[안드로이드 스튜디오/코틀린] 스위치, 토글 버튼, 체크 박스 activity_main.xml MainActivity.kt package com.shinyelee.android_study2 import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import com.shinyelee.android_study2.databinding.ActivityMainBinding class MainActivity : AppCompatActivity() { private var vBinding : ActivityMainBinding? = null private val binding get() = vBinding!! override fun onCre..