혀가 길지 않은 개발자

activity_main.xml MainActivity.java package com.jwsoft.javaproject; import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.LinearLayout; public class MainActivity extends AppCompatActivity implements View.OnClickListener { private LinearLayout linearRed; private LinearLayout linearGreen; private LinearLayout linearBlue; @Overrid..

activity_main.xml MainActivity.kt package com.jwsoft.kotlinproject import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.view.View import android.widget.Button import android.widget.LinearLayout class MainActivity : AppCompatActivity(), View.OnClickListener { private lateinit var btnRed: Button private lateinit var btnGreen: Button private lateinit var btnBlue: ..