댓글 여러개 작성시 댓글이 안보임
해결됨
[초급편] 안드로이드 커뮤니티 앱 만들기(Android Kotlin)
선생님 저 질문이있어서 이렇게 문의드립니다. 댓글 불러오기강의에서 댓글을 여러개 작성을 하게 되면 사진에 보이는 것처럼 댓글을 새로 작성해도 화면에 보이지 않고있습니다. infinite/endless scroll(무한 스크롤)기능을 추가해야하는지 싶어서 이렇게 문의드립니다. activity_board_inside.xml <?xml version="1.0" encoding="utf-8"?> <layout 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"> <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent"> <ScrollView android:layout_width="match_parent" android:layout_height="match_parent"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".board.BoardInsideActivity"> <LinearLayout android:layout_width="match_parent" android:layout_height="60dp"> <androidx.constraintlayout.widget.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:id="@+id/titleArea" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginLeft="50dp" android:layout_marginRight="50dp" android:gravity="center" android:text="title" android:textColor="@color/black" android:textSize="20sp" android:textStyle="bold" /> <ImageView android:id="@+id/boardSettingIcon" android:layout_width="20dp" android:layout_height="40dp" android:layout_margin="10dp" android:src="@drawable/main_menu" android:visibility="invisible" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintTop_toTopOf="parent" /> </androidx.constraintlayout.widget.ConstraintLayout> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="0.5dp" android:background="@color/black"> </LinearLayout> <TextView android:id="@+id/timeArea" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="10dp" android:gravity="right" android:text="time" /> <TextView android:id="@+id/textArea" android:layout_width="match_parent" android:layout_height="200dp" android:layout_margin="20dp" android:background="@drawable/background_radius" android:padding="10dp" android:text="여기는 내용 영역" android:textColor="@color/black" /> <ImageView android:id="@+id/getImageArea" android:layout_width="match_parent" android:layout_height="300dp" android:layout_marginLeft="20dp" android:layout_marginRight="20dp" /> <ListView android:id="@+id/commentLV" android:layout_width="match_parent" android:layout_height="600dp" /> </LinearLayout> </ScrollView> <LinearLayout android:layout_width="match_parent" android:layout_alignParentBottom="true" android:background="@color/white" android:layout_height="60dp"> <EditText android:id="@+id/commentArea" android:hint="댓글을 입력해주세요" android:layout_marginLeft="10dp" android:layout_width="320dp" android:layout_height="match_parent" android:background="@android:color/transparent"/> <ImageView android:id="@+id/commentBtn" android:src="@drawable/btnwrite" android:layout_width="wrap_content" android:layout_height="wrap_content"/> </LinearLayout> </RelativeLayout> </layout> BoardInsideActivity.kt package com.example.mysolelife.board import android.content.Intent import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.util.Log import android.view.LayoutInflater import android.widget.Button import android.widget.Toast import androidx.appcompat.app.AlertDialog import androidx.core.view.isVisible import androidx.databinding.DataBindingUtil import com.bumptech.glide.Glide import com.example.mysolelife.R import com.example.mysolelife.comment.CommentLVAdapter import com.example.mysolelife.comment.CommentModel import com.example.mysolelife.databinding.ActivityBoardInsideBinding import com.example.mysolelife.utils.FBAuth import com.example.mysolelife.utils.FBRef import com.google.android.gms.tasks.OnCompleteListener import com.google.firebase.database.DataSnapshot import com.google.firebase.database.DatabaseError import com.google.firebase.database.ValueEventListener import com.google.firebase.ktx.Firebase import com.google.firebase.storage.ktx.storage import java.lang.Exception class BoardInsideActivity : AppCompatActivity() { private val TAG = BoardInsideActivity::class.java.simpleName private lateinit var binding : ActivityBoardInsideBinding private lateinit var key : String private val commentDataList = mutableListOf<CommentModel>() private lateinit var commentAdapter : CommentLVAdapter override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) binding = DataBindingUtil.setContentView(this, R.layout.activity_board_inside) binding.boardSettingIcon.setOnClickListener { showDialog() } // 첫 번째 방법 /* val title = intent.getStringExtra("title").toString() val content = intent.getStringExtra("content").toString() val time = intent.getStringExtra("time").toString() binding.titleArea.text = title binding.textArea.text = content binding.timeArea.text = time*/ // 두 번째 방법 key = intent.getStringExtra("key").toString() getBoardData(key) getImageData(key) binding.commentBtn.setOnClickListener { insertComment(key) } commentAdapter = CommentLVAdapter(commentDataList) binding.commentLV.adapter = commentAdapter getCommentData(key) } private fun getBoardData(key : String) { val postListener = object : ValueEventListener { override fun onDataChange(dataSnapshot: DataSnapshot) { try { val dataModel = dataSnapshot.getValue(BoardModel::class.java) Log.d(TAG, dataModel!!.title) binding.titleArea.text = dataModel!!.title binding.textArea.text = dataModel!!.content binding.timeArea.text = dataModel!!.time val myUid = FBAuth.getUid() val writerUid = dataModel.uid if(myUid.equals(writerUid)) { binding.boardSettingIcon.isVisible = true } else { } } catch (e : Exception) { Log.d(TAG, "삭제완료") } } override fun onCancelled(databaseError: DatabaseError) { // Getting Post failed, log a message Log.w("ContentListActivity", "loadPost:onCancelled", databaseError.toException()) } } FBRef.boardRef.child(key).addValueEventListener(postListener) } private fun getImageData(key : String) { // Reference to an image file in Cloud Storage val storageReference = Firebase.storage.reference.child(key + ".png") // ImageView in your Activity val imageViewFromFB = binding.getImageArea storageReference.downloadUrl.addOnCompleteListener(OnCompleteListener { task -> if (task.isSuccessful) { Glide.with(this) .load(task.result) .into(imageViewFromFB) } else { binding.getImageArea.isVisible = false // 이미지 사진이 없을 때 } }) } private fun showDialog() { val mDialogView = LayoutInflater.from(this).inflate(R.layout.custom_dialog, null) val mBuilder = AlertDialog.Builder(this) .setView(mDialogView) .setTitle("게시글 수정/삭제") val alertDialog = mBuilder.show() alertDialog.findViewById<Button>(R.id.editBtn)?.setOnClickListener { Toast.makeText(this, "수정 버튼을 눌렀습니다", Toast.LENGTH_LONG).show() val intent = Intent(this, BoardEditActivity::class.java) intent.putExtra("key", key) startActivity(intent) } alertDialog.findViewById<Button>(R.id.removeBtn)?.setOnClickListener { FBRef.boardRef.child(key).removeValue() Toast.makeText(this, "삭제완료", Toast.LENGTH_LONG).show() finish() } } fun insertComment(key : String){ // 파이어베이스 구조 // comment // - BoardKey // - CommentKey // - CommentData // - CommentData // - CommentData FBRef.commentRef .child(key) .push() .setValue( CommentModel( binding.commentArea.text.toString(), FBAuth.getTime() ) ) Toast.makeText(this, "댓글 입력 완료", Toast.LENGTH_SHORT).show() binding.commentArea.setText("") } fun getCommentData(key: String){ val postListener = object : ValueEventListener { override fun onDataChange(dataSnapshot: DataSnapshot) { commentDataList.clear() for (dataModel in dataSnapshot.children) { val item = dataModel.getValue(CommentModel::class.java) commentDataList.add(item!!) } commentAdapter.notifyDataSetChanged() } override fun onCancelled(databaseError: DatabaseError) { // Getting Post failed, log a message Log.w(TAG, "loadPost:onCancelled", databaseError.toException()) } } FBRef.commentRef.child(key).addValueEventListener(postListener) } }
- android
- firebase
- kotlin