[안드로이드 스튜디오/코틀린] 툴 바 activity_main.xml menu.xml MainActivity.kt package com.shinyelee.android_study2 import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.view.Menu import android.view.MenuItem import android.view.View import android.widget.AdapterView import android.widget.ArrayAdapter import android.widget.SearchView import com.shinyelee.android_study2.databin..