如何在另一個片段內膨脹另一個布局

Question

嗨，我試圖在我的應用程序中給我的 home_items.xml 充氣，但是它不起作用，它只是給了我 fragment_home.xml 只是我想知道我該如何解決這個問題？ （我可以發送我的代碼的任何部分。）

家庭適配器.java：

package com.example.soulforge.adapter;

import android.content.Context;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import com.bumptech.glide.Glide;
import com.example.soulforge.R;
import com.example.soulforge.model.HomeModel;

import java.util.List;
import java.util.Random;

import de.hdodenhof.circleimageview.CircleImageView;


public class HomeAdapter extends RecyclerView.Adapter<HomeAdapter.HomeHolder>{

    private List<HomeModel> list;
    Context context;

    public HomeAdapter(List<HomeModel> list, Context context) {
        this.list = list;
        this.context = context;
    }

    @NonNull
    @Override
    public HomeHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.home_items,  parent, false);
        return new HomeHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull HomeHolder holder, int position) {

        holder.userNameTv.setText(list.get(position).getUserName());
        holder.timeTv.setText(""+list.get(position).getTimestamp());


        int count = list.get(position).getLikeCount();
        if(count ==0){
            holder.likeCountTv.setVisibility(View.INVISIBLE);
        }else if (count == 1){
            holder.likeCountTv.setText(count + " like");
        }else{
            holder.likeCountTv.setText(count + " likes");
        }

        holder.descriptionTv.setText(list.get(position).getDescription());


        Random random = new Random();

        int color = Color.argb(255, random.nextInt(256), random.nextInt(256), random.nextInt(256));

        Glide.with(context.getApplicationContext())
                .load(list.get(position).getProfileImage())
                .placeholder(R.drawable.ic_person)
                .timeout(6500)
                .into(holder.profileImage);

        Glide.with(context.getApplicationContext())
                .load(list.get(position).getImageUrl())
                .placeholder(new ColorDrawable(color))
                .timeout(7000)
                .into(holder.imageView);

    }

    @Override
    public int getItemCount() {

        return list.size();
    }

    static class HomeHolder extends RecyclerView.ViewHolder{
        private CircleImageView profileImage;
        private TextView userNameTv, timeTv, likeCountTv, descriptionTv;
        private ImageView imageView;
        private ImageButton likeBtn, commentBtn, shareBtn;

        public HomeHolder(@NonNull View itemView) {
            super(itemView);

            profileImage = itemView.findViewById(R.id.profileImage);
            imageView = itemView.findViewById(R.id.imageView);
            userNameTv = itemView.findViewById(R.id.nameTv);
            timeTv = itemView.findViewById(R.id.timeTv);
            likeCountTv = itemView.findViewById(R.id.likeCountTv);
            likeBtn = itemView.findViewById(R.id.likeBtn);
            commentBtn = itemView.findViewById(R.id.commentBtn);
            shareBtn = itemView.findViewById(R.id.shareBtn);
            descriptionTv = itemView.findViewById(R.id.descTv);


        }
    }
}

主頁.java:

package com.example.soulforge.fragments;

import android.os.Bundle;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.example.soulforge.R;
import com.example.soulforge.adapter.HomeAdapter;
import com.example.soulforge.model.HomeModel;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.firestore.CollectionReference;
import com.google.firebase.firestore.DocumentReference;
import com.google.firebase.firestore.EventListener;
import com.google.firebase.firestore.FirebaseFirestore;
import com.google.firebase.firestore.FirebaseFirestoreException;
import com.google.firebase.firestore.QueryDocumentSnapshot;
import com.google.firebase.firestore.QuerySnapshot;

import java.util.ArrayList;
import java.util.List;
import java.util.Objects;


public class Home extends Fragment {

    private RecyclerView recyclerView;


    HomeAdapter adapter;

    private List<HomeModel> list;

    private FirebaseUser user;

    public Home() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_home, container, false);
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

        init(view);

        list = new ArrayList<>();
        adapter = new HomeAdapter(list, getContext());
        recyclerView.setAdapter(adapter);

        loadDataFromFirestore();
    }

    private void init(View view) {

        Toolbar toolbar = view.findViewById(R.id.toolbar);
        if (getActivity() != null)
            ((AppCompatActivity) getActivity()).setSupportActionBar(toolbar);

        recyclerView = view.findViewById(R.id.recyclerView);
        recyclerView.setHasFixedSize(true);
        recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));

        FirebaseAuth auth = FirebaseAuth.getInstance();
        user = auth.getCurrentUser();
    }

    public void loadDataFromFirestore() {
        CollectionReference reference = FirebaseFirestore.getInstance().collection("Users")
                .document(user.getUid())
                .collection("Post Images");

        reference.addSnapshotListener(new EventListener<QuerySnapshot>() {
            @Override
            public void onEvent(@Nullable QuerySnapshot value, @Nullable FirebaseFirestoreException error) {
                if (error != null) {
                    Log.e("Error: ", error.getMessage());
                    return;
                }
                if (value == null)
                    return;
                for (QueryDocumentSnapshot snapshot : value) {
                    if (!snapshot.exists())
                        return;

                    HomeModel model = snapshot.toObject(HomeModel.class);
                    list.add(new HomeModel(
                            model.getUserName(),
                            model.getProfileImage(),
                            model.getImageUrl(),
                            model.getUid(),
                            model.getComments(),
                            model.getDescription(),
                            model.getId(),
                            model.getTimestamp(),
                            model.getLikeCount()
                    ));
                }
                adapter.notifyDataSetChanged();
            }
        });

    }
}

知道如何解決這個問題嗎？ 我嘗試使用 inflate 但它無法工作，因為它缺少家庭項目 xml在此處輸入圖像描述。

在你說我已經清除和重建以及所有常見問題解答方法來解決這個問題之前

Answer 1

您正在更新錯誤的列表實例

在適配器內創建一種方法

public updateList(List<HomeModel> list) {
    this.list = list;
    notifyDataSetChanged()
}

並稱它為：

    reference.addSnapshotListener(new EventListener<QuerySnapshot>() {
        @Override
        public void onEvent(@Nullable QuerySnapshot value, @Nullable FirebaseFirestoreException error) {
                ... 
                adapter.updateList(new HomeModel(
                        model.getUserName(),
                        model.getProfileImage(),
                        model.getImageUrl(),
                        model.getUid(),
                        model.getComments(),
                        model.getDescription(),
                        model.getId(),
                        model.getTimestamp(),
                        model.getLikeCount()
                ));
            }
        }
    });