안드로이드 리사이클뷰에 layoutManager 연결하는데 오류가 발생해요

Question

안드로이드(코틀린) 탭과 프레그먼트 공부중인데 RentalList.kt에서 37번쨰 라인에 있는 bookRecyclerView.layoutManager= LinearLayoutManager(this) 이 부분에서 "Type mismatch: inferred type is RentalList but Context! was expected" 오류가 발생합니다. 왜 이러한 오류가 발생하는 정확한 원인을 모르겠습니다. package com.example.reigster_show import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.util.Log import androidx.fragment.app.Fragment import androidx.fragment.app.FragmentActivity import androidx.viewpager2.adapter.FragmentStateAdapter import com.google.android.material.tabs.TabLayoutMediator import com.example.reigster_show.databinding.ActivityTabmenuBinding class TabMenu : AppCompatActivity() { val binding by lazy { ActivityTabmenuBinding.inflate(layoutInflater) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(binding.root) Log.d("메시지","TabMenu 입장") val list = listOf(RentalList()) val pagerAdapter = FragmentPagerAdapter(list,this) binding.viewpager.adapter = pagerAdapter val titles = listOf("책 대출","배달 현황","반납","장바구니") TabLayoutMediator(binding.tabLayout,binding.viewpager){ tab, position -> tab.text = titles.get(position) }.attach() } } class FragmentPagerAdapter(val fragmentList:List,fragmentActivity: FragmentActivity) : FragmentStateAdapter(fragmentActivity){ override fun getItemCount() = fragmentList.size override fun createFragment(position: Int) = fragmentList.get(position) } package com.example.reigster_show import android.os.Bundle import androidx.fragment.app.Fragment import android.view.LayoutInflater import android.view.View import android.view.ViewGroup import android.widget.AdapterView import androidx.recyclerview.widget.LinearLayoutManager import androidx.recyclerview.widget.RecyclerView import com.google.firebase.firestore.FirebaseFirestore import kotlinx.android.synthetic.main.fragment_rental_list.* import kotlinx.android.synthetic.main.bookitem.view.* import kotlinx.android.synthetic.main.fragment_rental_list.bookRecyclerView import kotlinx.android.synthetic.main.fragment_rental_list.searchBtn import kotlinx.android.synthetic.main.fragment_rental_list.searchWord import kotlinx.android.synthetic.main.fragment_rental_list.spinner class RentalList : Fragment() { override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): View? { // Inflate the layout for this fragment return inflater.inflate(R.layout.fragment_rental_list, container, false) } var firestore: FirebaseFirestore? = null override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.fragment_rental_list) // 파이어스토어 인스턴스 초기화 firestore = FirebaseFirestore.getInstance() val adpater = BookListAdapter() this.bookRecyclerView.adapter=adpater bookRecyclerView.layoutManager= LinearLayoutManager(this) //오류 발생 // 검색 옵션 변수 var searchOption = "name" // 스피너 옵션에 따른 동작 spinner.onItemSelectedListener = object : AdapterView.OnItemSelectedListener { override fun onNothingSelected(parent: AdapterView<*>?) { } override fun onItemSelected( parent: AdapterView<*>?, view: View?, position: Int, id: Long ) { when (spinner.getItemAtPosition(position)) { "책제목" -> { searchOption = "name" } "출판사" -> { searchOption = "publisher" } } } } // 검색 옵션에 따라 검색 searchBtn.setOnClickListener { (bookRecyclerView.adapter as BookListAdapter).search( searchWord.text.toString(), searchOption ) } } private fun setContentView(fragmentA: Int) { } } class BookListAdapter : RecyclerView.Adapter() { // Person 클래스 ArrayList 생성성 var BookList : ArrayList = arrayListOf() var firestore: FirebaseFirestore = FirebaseFirestore.getInstance() init { // telephoneBook의 문서를 불러온 뒤 Person으로 변환해 ArrayList에 담음 firestore?.collection("BookList")?.addSnapshotListener { querySnapshot, firebaseFirestoreException -> // ArrayList 비워줌 BookList.clear() for (snapshot in querySnapshot!!.documents) { var item = snapshot.toObject(Book::class.java) BookList.add(item!!) } notifyDataSetChanged() } } // xml파일을 inflate하여 ViewHolder를 생성 override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BookHolder { var view = LayoutInflater.from(parent.context).inflate(R.layout.bookitem, parent, false) return BookHolder(view) } override fun onBindViewHolder(holder: BookHolder, position: Int) { var viewHolder = (holder as BookHolder).itemView viewHolder.name.text = BookList[position].name viewHolder.publisher.text = BookList[position].publisher } // 리사이클러뷰의 아이템 총 개수 반환 override fun getItemCount(): Int { return BookList.size } class BookHolder(itmview: View) : RecyclerView.ViewHolder(itmview) { } // 파이어스토어에서 데이터를 불러와서 검색어가 있는지 판단 fun search(searchWord : String, option : String) { firestore?.collection("BookList")?.addSnapshotListener { querySnapshot, firebaseFirestoreException -> // ArrayList 비워줌 BookList.clear() for (snapshot in querySnapshot!!.documents) { if (snapshot.getString(option)!!.contains(searchWord)) { var item = snapshot.toObject(Book::class.java) BookList.add(item!!) } } notifyDataSetChanged() } } }

얌얌냠냠 · Accepted Answer

bookRecyclerView.layoutManager &#61; LinearLayoutManager(requireContext(), RecyclerView.VERTICAL, false) RecyclerView.VERTICAL요거는 원하시는 방향에 맞춰서 바꾸세요

안드로이드 리사이클뷰에 layoutManager 연결하는데 오류가 발생해요

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