ViewPager2滑动冲突的解决方法

package com.example.banner

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.viewpager2.widget.ViewPager2

class MainActivity : AppCompatActivity() {
 override fun onCreate(savedInstanceState: Bundle&＃63;) {
 super.onCreate(savedInstanceState)
 setContentView(R.layout.activity_main)
 val viewPager2 = findViewById(R.id.viewpager2outside)
 val myAdapter = OutsideAdapter()
 viewPager2.adapter = myAdapter
 }
}

package com.example.banner

import android.graphics.Color
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView

class InnerAdapter : RecyclerView.Adapter() {
 private var mList: List = ArrayList()
 override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PagerViewHolder {
 val itemView = LayoutInflater.from(parent.context).inflate(R.layout.item_page, parent, false)
 return PagerViewHolder(itemView)
 }

 override fun onBindViewHolder(holder: PagerViewHolder, position: Int) {
 holder.bindData(mList[position])
 }

 fun setList(list: List) {
 mList = list
 }

 override fun getItemCount(): Int {
 return mList.size
 }
 // ViewHolder需要继承RecycleView.ViewHolder
 class PagerViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
 private val mTextView: TextView = itemView.findViewById(R.id.tv_text)
 private var colors = arrayOf("#41F1E5","#8D41F1","#FF99CC","#41F1E5")

 fun bindData(i: Int) {
  mTextView.text = i.toString()
  mTextView.setBackgroundColor(Color.parseColor(colors[i]))
 }
 }
}

package com.example.banner

import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.recyclerview.widget.RecyclerView
import androidx.viewpager2.widget.ViewPager2

class OutsideAdapter() : RecyclerView.Adapter() {
 class PagerViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
 private val mPagerView: ViewPager2 = itemView.findViewById(R.id.viewpager2inner)
 fun bindData() {
  val data = listOf(0, 1, 2, 3)
  val myAdapter = InnerAdapter()
  myAdapter.setList(data)
  mPagerView.adapter = myAdapter
 }
 }

 override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PagerViewHolder {
 val itemView = LayoutInflater.from(parent.context).inflate(R.layout.item_outside, parent, false)
 return PagerViewHolder(itemView)
 }

 override fun onBindViewHolder(holder: PagerViewHolder, position: Int) {
 holder.bindData()
 }

 override fun getItemCount(): Int = 2

}

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package com.example.banner

import android.content.Context
import android.util.AttributeSet
import android.view.MotionEvent
import android.widget.RelativeLayout
import androidx.viewpager2.widget.ViewPager2

class ViewPager2Container @JvmOverloads constructor(context: Context, attrs: AttributeSet&＃63; = null, defStyleAttr: Int = 0) : RelativeLayout(context, attrs, defStyleAttr) {
 private lateinit var mViewPager2: ViewPager2

 override fun onFinishInflate() {
 super.onFinishInflate()
 for (i in 0 until childCount) {
  val childView = getChildAt(i)
  if (childView is ViewPager2) {
  mViewPager2 = childView
  break
  }
 }
 }

 override fun onInterceptTouchEvent(ev: MotionEvent): Boolean {
 when (ev.action) {
  //不能让父View拦截事件否则父View会拦截接下来的一系列事件
  MotionEvent.ACTION_DOWN -> {
  parent.requestDisallowInterceptTouchEvent(true)
  }
  MotionEvent.ACTION_MOVE -> {
  if(mViewPager2.currentItem!=mViewPager2.adapter!!.itemCount-1){
   parent.requestDisallowInterceptTouchEvent(true)
  }else{
   parent.requestDisallowInterceptTouchEvent(false)
  }
  }
 }
 return super.onInterceptTouchEvent(ev)
 }
}

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