activity_main.xml MainActivity.java package com.jwsoft.javaproject; import androidx.appcompat.app.AppCompatActivity; import androidx.lifecycle.MutableLiveData; import androidx.lifecycle.Observer; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; public class MainActivity extends AppCompatActivity { private TextView tvName; private B..
build.gradle (Module: app) dependencies { implementation 'androidx.viewpager2:viewpager2:1.0.0' } activity_main.xml viewpager_item.xml ViewPagerAdapter.kt package com.jwsoft.kotlinproject import android.content.Context import android.view.LayoutInflater import android.view.View import android.view.ViewGroup import android.widget.TextView import androidx.recyclerview.widget.RecyclerView class Vie..
build.gradle (Modult: app) dependencies { implementation 'com.google.android.material:material:1.1.0' } TabLayout, TabItem 는 머티리얼 디자인이므로 의존성 추가 activity_main.xml MainActivity.kt package com.jwsoft.kotlinproject import android.graphics.Color import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.widget.FrameLayout import com.google.android.material.tabs.TabLayout ..
Handler.post() vs runOnUiThread() vs AsyncTask.execute() activity_main.xml MainActivity.kt package com.jwsoft.kotlinproject import android.os.AsyncTask import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.os.Handler import kotlinx.android.synthetic.main.activity_main.* class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?)..
activity_main.xml android:textAllCaps="false" 대소문자 구분 (CHANGE -> Change) 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.l..
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