groovy
implementation 'androidx.viewpager2:viewpager2:1.0.0'
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<androidx.viewpager2.widget.ViewPager2
android:id="@+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>
kotlin
import androidx.fragment.app.Fragment
import androidx.fragment.app.FragmentActivity
import androidx.viewpager2.adapter.FragmentStateAdapter
class ViewPagerAdapter(fragmentActivity: FragmentActivity) : FragmentStateAdapter(fragmentActivity) {
private val fragments = arrayListOf<Fragment>()
fun addFragment(fragment: Fragment) {
fragments.add(fragment)
}
override fun getItemCount(): Int {
return fragments.size
}
override fun createFragment(position: Int): Fragment {
return fragments[position]
}
}
kotlin
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import androidx.fragment.app.Fragment
import androidx.viewpager2.widget.ViewPager2
class MainActivity : AppCompatActivity() {
private lateinit var viewPager: ViewPager2
private lateinit var viewPagerAdapter: ViewPagerAdapter
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
viewPager = findViewById(R.id.viewPager)
viewPagerAdapter = ViewPagerAdapter(this)
viewPagerAdapter.addFragment(FragmentA())
viewPagerAdapter.addFragment(FragmentB())
viewPagerAdapter.addFragment(FragmentC())
viewPager.adapter = viewPagerAdapter
}
}
