Android 如何在ViewPager2中使用视图绑定?
如何在ViewPager2中使用视图绑定?参考我的代码 我正在开发带有ViewPager2的应用程序介绍屏幕,其中包含多个片段 我在主布局中有一个ViewPager2&我想在我的子片段中膨胀viewpager的id ViewPagerFragment.ktAndroid 如何在ViewPager2中使用视图绑定?,android,android-viewbinding,Android,Android Viewbinding,如何在ViewPager2中使用视图绑定?参考我的代码 我正在开发带有ViewPager2的应用程序介绍屏幕,其中包含多个片段 我在主布局中有一个ViewPager2&我想在我的子片段中膨胀viewpager的id ViewPagerFragment.kt import android.os.Bundle import android.view.LayoutInflater import android.view.View import android.view.ViewGroup impor
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.fragment.app.Fragment
import com.test.zigmaster.databinding.FragmentViewPagerBinding
class ViewPagerFragment : Fragment() {
var binding : FragmentViewPagerBinding?= null
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View {
// Inflate the layout for this fragment
// val view = inflater.inflate(R.layout.fragment_view_pager, container, false)
binding = FragmentViewPagerBinding.inflate(inflater)
val fragmentList = arrayListOf<Fragment>(
FirstScreen(),
SecondScreen(),
ThirdScreen()
)
val adapter = ViewPagerAdapter(
fragmentList,
requireActivity().supportFragmentManager,
lifecycle
)
binding!!.viewPager.adapter = adapter
return binding!!.root
}
override fun onDestroyView() {
super.onDestroyView()
binding=null
}
}
导入android.os.Bundle
导入android.view.LayoutInflater
导入android.view.view
导入android.view.ViewGroup
导入androidx.fragment.app.fragment
导入com.test.zigmaster.databinding.FragmentViewPagerBinding
类ViewPagerFragment:Fragment(){
变量绑定:FragmentViewPagerBinding?=null
覆盖创建视图(
充气器:布局充气器,容器:视图组?,
savedInstanceState:捆绑?
):查看{
//为该碎片膨胀布局
//val视图=充气机。充气(R.layout.fragment\u view\u页面,容器,false)
绑定=碎片查看页面绑定。充气(充气机)
val fragmentList=arrayListOf(
FirstScreen(),
SecondScreen(),
第三屏()
)
val适配器=ViewPagerAdapter(
碎片列表,
Requisition().supportFragmentManager,
生命周期
)
绑定!!.viewPager.adapter=适配器
返回绑定!!.root
}
重写onDestroyView(){
super.onDestroyView()
binding=null
}
}
ViewPagerAdapter.kt
import androidx.fragment.app.Fragment
import androidx.fragment.app.FragmentManager
import androidx.lifecycle.Lifecycle
import androidx.viewpager2.adapter.FragmentStateAdapter
class ViewPagerAdapter(
list: ArrayList<Fragment>,
fm: FragmentManager,
lifecycle: Lifecycle
) : FragmentStateAdapter(fm, lifecycle) {
private val fragmentList = list
override fun getItemCount(): Int {
return fragmentList.size
}
override fun createFragment(position: Int): Fragment {
return fragmentList[position]
}
}
导入androidx.fragment.app.fragment
导入androidx.fragment.app.FragmentManager
导入androidx.lifecycle.lifecycle
导入androidx.viewpager2.adapter.FragmentStateAdapter
类ViewPagerAdapter(
列表:ArrayList,
fm:碎片管理器,
生命周期:生命周期
):FragmentStateAdapter(fm,生命周期){
private val fragmentList=列表
重写getItemCount():Int{
返回fragmentList.size
}
重写片段(位置:Int):片段{
返回碎片列表[位置]
}
}
fragment_view_pager.xml
<?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=".ui.app_intro.ViewPagerFragment">
<androidx.viewpager2.widget.ViewPager2
android:id="@+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
这里是第一个片段:我想充气查看寻呼机id
FirstScreen.kt
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.fragment.app.Fragment
import androidx.viewpager2.widget.ViewPager2
import com.test.zigmaster.R
import com.test.zigmaster.databinding.FragmentFirstScreenBinding
class FirstScreen : Fragment() {
private var binding : FragmentFirstScreenBinding?= null
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View {
// Inflate the layout for this fragment
binding = FragmentFirstScreenBinding.inflate(inflater)
val viewPager = activity?.findViewById<ViewPager2>(R.id.viewPager)
binding!!.next.setOnClickListener {
viewPager?.currentItem = 1
}
return binding!!.root
}
override fun onDestroyView() {
super.onDestroyView()
binding=null
}
}
导入android.os.Bundle
导入android.view.LayoutInflater
导入android.view.view
导入android.view.ViewGroup
导入androidx.fragment.app.fragment
导入androidx.viewpager2.widget.viewpager2
导入com.test.zigmaster.R
导入com.test.zigmaster.databinding.FragmentFirstScreenBinding
类FirstScreen:Fragment(){
私有变量绑定:FragmentFirstScreenBinding?=null
覆盖创建视图(
充气器:布局充气器,容器:视图组?,
savedInstanceState:捆绑?
):查看{
//为该碎片膨胀布局
绑定=碎片绑定。充气(充气机)
val viewPager=活动?.findViewById(R.id.viewPager)
绑定!!.next.setOnClickListener{
viewPager?.currentItem=1
}
返回绑定!!.root
}
重写onDestroyView(){
super.onDestroyView()
binding=null
}
}