혀가 길지 않은 개발자

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..

cardview_item.xml MyAdapter.kt package com.jwsoft.kotlinproject import android.view.LayoutInflater import android.view.View import android.view.ViewGroup import android.widget.TextView import androidx.recyclerview.widget.RecyclerView class MyAdapter : RecyclerView.Adapter() { inner class MyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) { private val tvPosition: TextView = itemVie..

MainActivity.kt package com.jwsoft.kotlinproject import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import kotlinx.android.synthetic.main.activity_main.* class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) etJames.requestFocus() // 포커스가 있어야 키보드 노출. } } activ..