片段内的Searchview问题Kotlin

如何解决片段内的Searchview问题Kotlin

大家好，我的应用遇到了问题我试图在片段中的工具栏上使用SearchView，但我无法弄清2件事首先，为什么当我通过onCreateOptionsMenu使菜单膨胀时什么也没发生？我需要使用工具栏通过onCreateView来膨胀菜单。通过onCreateOptionsMenu和onCreateView并使用 “ inflater.inflate（R.menu.search_menu，菜单） val searchItem = menu.findItem（R.id.SM）“ 我认为menu.findItem（R.id.SM）在文本编辑后尝试登录到searchview的显示列表时找不到找到这个结论的搜索项，但是日志甚至没有出现，所以我猜它没有执行log命令。这是完整的代码，希望我能清楚自己的问题： Search.kt（搜索碎片）

package com.example.pricetag.fragments

import android.content.Context
import android.os.Bundle
import android.util.Log
import android.view.*
import android.widget.EditText
import androidx.appcompat.widget.SearchView
import androidx.fragment.app.Fragment
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.example.pricetag.R
import kotlinx.android.synthetic.main.fragment_search.*
import kotlinx.android.synthetic.main.rv_child_addlist.view.*


class search : Fragment() {

    var itemList:MutableList<String> = ArrayList()
    var displayList:MutableList<String> = ArrayList()

    override fun onCreateView(inflater: LayoutInflater,container: ViewGroup?,savedInstanceState: Bundle?) : View? {
        val view = inflater.inflate(R.layout.fragment_search,container,false)

        load()

        val toolbar = view.findViewById<androidx.appcompat.widget.Toolbar>(R.id.searchTB)
        toolbar.inflateMenu(R.menu.search_menu)

        return view
    }

    override fun onActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceState)
        rv_addingList.layoutManager = LinearLayoutManager(context)
        rv_addingList.adapter = addListAdapter(requireContext(),displayList)


    }

    override fun onResume() {
        refreshList()
        super.onResume()
    }

    fun refreshList(){
        rv_addingList.adapter = addListAdapter(requireContext(),displayList)
    }

    override fun onCreateOptionsMenu(menu: Menu,inflater: MenuInflater) {
        inflater.inflate(R.menu.search_menu,menu)
        val searchItem = menu.findItem(R.id.SM)
        if(searchItem != null){
            val searchView = searchItem.actionView as SearchView
            val editext = searchView.findViewById<EditText>(androidx.appcompat.R.id.search_src_text)
            editext.hint = "Search here..."

            searchView.setOnQueryTextListener(object : SearchView.OnQueryTextListener{
                override fun onQueryTextSubmit(query: String?): Boolean {
                    Log.i("seconds",displayList.toString())
                    return true
                }

                override fun onQueryTextChange(newText: String?): Boolean {
                    Log.i("first",displayList.toString())
                    displayList.clear()
                    if(newText!!.isNotEmpty()){
                        val search = newText.toLowerCase()
                        Log.i("Rosha",search)
                        itemList.forEach {
                            if(it.toLowerCase().contains(search)){
                                displayList.add(it)
                            }
                        }
                    }else{
                        displayList.addAll(itemList)
                    }
                    rv_addingList.adapter?.notifyDataSetChanged()
                    return true
                }

            })
        }

        return super.onCreateOptionsMenu(menu,inflater)
    }

    class addListAdapter(val con : Context,val list: List<String>) : RecyclerView.Adapter<addListAdapter.ViewHolder>(){

        override fun onCreateViewHolder(parent: ViewGroup,viewType: Int): addListAdapter.ViewHolder {
            return ViewHolder(LayoutInflater.from(con).inflate(R.layout.rv_child_addlist,parent,false))

        }

        override fun getItemCount(): Int {
            return list.size
        }

        override fun onBindViewHolder(holder: addListAdapter.ViewHolder,position: Int) {

            holder.item.text = list[position]
        }

        class ViewHolder(v: View) : RecyclerView.ViewHolder(v){

           val item = v.tv_itemlist_item
        }

    }

    fun load(){
        itemList.add("Milk")
        itemList.add("Eggs")
        itemList.add("Cereal")
        itemList.add("Bread")
        itemList.add("Tomato")
        displayList.addAll(itemList)
    }

}

rv_child_addinglist（回收者视图XML文件）

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="10dp">

    <TextView
        android:id="@+id/tv_itemlist_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="20sp"
        android:textStyle="bold"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp"
        />

</LinearLayout>

搜索片段xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".fragments.search">


    <androidx.appcompat.widget.Toolbar
        android:id="@+id/searchTB"
        android:layout_width="match_parent"
        android:layout_height="?android:actionBarSize"
        android:background="@color/colorPrimary"
        android:gravity="center_horizontal"/>

        <ImageButton
            android:id="@+id/IB_Return"
            android:layout_width="?android:actionBarSize"
            android:layout_height="?android:actionBarSize"
            android:background="@color/colorPrimary"
            android:src="@drawable/ic_back_white" />

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent" >

            <androidx.recyclerview.widget.RecyclerView
                android:id="@+id/rv_addingList"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginTop="?actionBarSize"
                android:clipToPadding="false"
                android:requiresFadingEdge="vertical"
                tools:ignore="NotSibling" />

        </RelativeLayout>



</FrameLayout>

search_menu xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:title="@string/popopo"
        android:id="@+id/SM"
        android:icon="@drawable/ic_search"
        app:showAsAction="always|collapseActionView"
        app:actionViewClass="android.widget.SearchView"


        />
</menu>

片段内的Searchview问题Kotlin

如何解决片段内的Searchview问题Kotlin

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