혀가 길지 않은 개발자

MVC (Model + View + Controller) activity_main.xml View 역할 model/Player.java package com.jwsoft.model; public enum Player { O, X } model/Cell.java package com.jwsoft.model; public class Cell { private Player value; public void setValue(Player value) { this.value = value; } public Player getValue() { return value; } } model/Board.java package com.jwsoft.model; public class Board { private Cell[][]..

Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK activity_main.xml activity_sub.xml SubActivity.java package com.jwsoft.javaproject; import androidx.appcompat.app.AppCompatActivity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.Button; public class SubActivity extends AppCompatActivity { private Button btnSub; @Override p..

Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK activity_main.xml activity_sub.xml SubActivity.kt package com.jwsoft.kotlinproject import android.content.Intent import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import kotlinx.android.synthetic.main.activity_main.* class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?)..

build.gradle (Project: KotlinProject) allprojects { repositories { google() jcenter() maven { url 'https://jitpack.io' } } } maven { url 'https://jitpack.io' } 추가 build.gradle (Module: app) dependencies { // MPAndroidChart implementation 'com.github.philJay:MPAndroidChart:v3.1.0' } 해당 라이브러리 사용 https://github.com/PhilJay/MPAndroidChart PhilJay/MPAndroidChart A powerful 🚀 Android chart view / grap..

lateinit vs Delegates.notNull() MainActivity.kt package com.jwsoft.kotlinproject import androidx.appcompat.app.AppCompatActivity import android.os.Bundle class MainActivity : AppCompatActivity() { private lateinit var longValue: Long private lateinit var intValue: Int private lateinit var stringValue: String private lateinit var arrLong: ArrayList private lateinit var arrInt: ArrayList private l..