为什么我在firelerview中显示/不显示我从firebase检索到的图像？

Posted 2023-02-02

我想将图像上传到firebase存储和firebase实时数据库，并在recyclerview中查看它。图像也包括文本，用户可以在其中指定图像的标题。当试图在recyclerview中显示上传的图像时，只显示文本但图像未显示。下面是我的recyclerview适配器：-firebase realtime database storing the image url and name

`package com.example.fieldhockeybooking;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;

import java.util.List;


public class RecycleViewAdapter extends RecyclerView.Adapter<RecycleViewAdapter.ViewHolder> 

    Context context;
    List<AdvertUploadInfo> MainImageUploadInfoList;

    public RecycleViewAdapter(Context context, List<AdvertUploadInfo> TempList) 

        this.MainImageUploadInfoList = TempList;

        this.context = context;
    

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) 

        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.recyclerview_items, parent, false);

        ViewHolder viewHolder = new ViewHolder(view);

        return viewHolder;
    

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) 
        AdvertUploadInfo UploadInfo = MainImageUploadInfoList.get(position);

        holder.imageNameTextView.setText(UploadInfo.getImageName());

        //Loading image from Glide library.
        Glide.with(context)
                .load(UploadInfo.getImageURL())
                .into(holder.imageView);
    

    @Override
    public int getItemCount() 

        return MainImageUploadInfoList.size();
    

    class ViewHolder extends RecyclerView.ViewHolder 

        public ImageView imageView;
        public TextView imageNameTextView;

        public ViewHolder(View itemView) 
            super(itemView);

            imageView = (ImageView) itemView.findViewById(R.id.imageView);

            imageNameTextView = (TextView) itemView.findViewById(R.id.ImageNameTextView);
        
    

`

this is what shown from my android apps when i try to show all uploaded images

答案

您必须使用match /allPaths=**的安全规则来指示所有路径上都允许公共读写访问：

service firebase.storage 
  match /b/savephoto-a1cc3.appspot.com/o 
    match /allPaths=** 
      // Allow access by all users
      allow read, write;
    
  

另一答案

您必须在firebase实时数据库中设置规则以检索图像并在recyclerview中显示。检查此链接https://firebase.google.com/docs/database/security/