혀가 길지 않은 개발자

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 ..

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: ..

fragment_red.xml fragment_green.xml fragment_blue.xml FragmentRed.java package com.jwsoft.javaproject; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import androidx.annotation.NonNull; import androidx.annotation.Nullable; import androidx.fragment.app.Fragment; public class FragmentRed extends Fragment { @Nullable @Override ..

fragment_red.xml fragment_green.xml fragment_blue.xml FragmentRed.kt package com.jwsoft.kotlinproject import android.os.Bundle import android.view.LayoutInflater import android.view.View import android.view.ViewGroup import androidx.fragment.app.Fragment class FragmentRed : Fragment() { override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): Vie..