[Android] ViewPager2, tabLayout 사용 방법

ViewPager2 & tabLayout 사용 방법

============xml================
<androidx.viewpager2.widget.ViewPager2
        android:id="@+id/viewPager"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toTopOf="@+id/tabLayout"
        />


    <com.google.android.material.tabs.TabLayout
        android:id="@+id/tabLayout"
        android:layout_width="0dp"
        android:layout_height="55dp"
        android:background="@color/white"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        android:fillViewport="true"
        app:tabGravity="fill"
        app:tabMode="fixed"
        app:tabIndicatorHeight="0dp"
        app:tabPaddingBottom="0dp"
        app:tabPaddingEnd="0dp"
        app:tabPaddingStart="0dp"
        app:tabPaddingTop="0dp"
        />


=============Adapter =================

class MainViewPagerAdapter(fa: FragmentActivity): FragmentStateAdapter(fa) {

    private var listener: OnItemClickListener? = null
    private var items: MutableList<BluetoothDevice> = arrayListOf()

    fun setItemClickListener(listener: OnItemClickListener){
        this.listener = listener
    }


    override fun getItemCount(): Int {
        return MainTabItems.values().count()
    }

    override fun createFragment(position: Int): Fragment {
        when(position){
            MainTabItems.AREA.ordinal ->{
                return HomeFragment()
            }
            MainTabItems.MYAROUND.ordinal ->{
                return HomeFragment()
            }
            MainTabItems.CHAT.ordinal ->{
                return HomeFragment()
            }
            MainTabItems.MYAPAGE.ordinal ->{
                return HomeFragment()
            }
            else->{
                return HomeFragment()
            }
        }
    }


}





==============Main Source ==============

viewPager.apply {
    adapter = mainViewPagerAdapter
}

TabLayoutMediator(tabLayout, viewPager){tab, position->

    layoutInflater.inflate(R.layout.custom_main_tab_item, null).apply{
        tvMainTab.text = when(position){
            MainTabItems.AREA.ordinal ->{
                R.string.main_tab_item2.toResString()
            }
            MainTabItems.MYAROUND.ordinal ->{
                R.string.main_tab_item3.toResString()
            }
            MainTabItems.CHAT.ordinal ->{
                R.string.main_tab_item4.toResString()
            }
            MainTabItems.MYAPAGE.ordinal ->{
                R.string.main_tab_item5.toResString()
            }
            else ->{
                R.string.main_tab_item1.toResString()
            }
        }
        ivMainTab.background = when(position){
            MainTabItems.AREA.ordinal ->{
                R.drawable.ic_launcher_foreground.toDrawable()
            }
            MainTabItems.MYAROUND.ordinal ->{
                R.drawable.ic_launcher_foreground.toDrawable()
            }
            MainTabItems.CHAT.ordinal ->{
                R.drawable.ic_launcher_foreground.toDrawable()
            }
            MainTabItems.MYAPAGE.ordinal ->{
                R.drawable.ic_launcher_foreground.toDrawable()
            }
            else ->{
                R.drawable.ic_launcher_foreground.toDrawable()
            }
        }

        tab.customView = this
    }


}.attach()