如何从Firebase在Arraylist中显示图像

Question

对此有很多类似的问题，但是某种程度上它对我不起作用。我在Firebase中有数据库，在该数据库中，我有一个类别的子项，而不是另一个子项，即ArrayList。那个孩子被称为“画廊”。画廊的ArrayList为0：图像链接，1：图像链接，依此类推。现在，我想在回收者视图中显示它。我已经有一个代码，但是由于它是一个ArrayList，因此肯定无法正常工作。

屏幕截图：

1. 数据库：

1. RecyclerView

以下是代码：

  

Details.java

    //comment
    recyclerView = (RecyclerView)findViewById(R.id.recyclerComment);
    recyclerViewGallery = (RecyclerView) findViewById(R.id.recyclerGallery);
    recyclerView.setLayoutManager(newLLM());
    recyclerViewGallery.setLayoutManager(newLLM());

   private LinearLayoutManager newLLM() {
    LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
    return linearLayoutManager;
}

    private void loadGalleryBeach(String menuID) {
    Query query = beach.orderByChild("menuID").equalTo(menuID);


    FirebaseRecyclerOptions<Gallery> options = new FirebaseRecyclerOptions.Builder<Gallery>()
            .setQuery(query, Gallery.class)
            .build();

    adapter2 = new FirebaseRecyclerAdapter<Gallery, ShowGalleryViewHolder>(options) {
        @Override
        protected void onBindViewHolder(@NonNull ShowGalleryViewHolder holder, int position, @NonNull Gallery model) {

            GalleryImages image = gallery.get(position);

            Picasso.get()
                    .load(image.getImage())
                    .into(holder.imageView);
        }

        @NonNull
        @Override
        public ShowGalleryViewHolder onCreateViewHolder(ViewGroup parent, int i) {
            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.show_gallery_layout, parent, false);
            return new ShowGalleryViewHolder(view);
        }
    };
    adapter2.startListening();
    recyclerViewGallery.setAdapter(adapter2);
}

  

ShowGalleryViewHolder

public class ShowGalleryViewHolder extends RecyclerView.ViewHolder {

public ImageView imageView;

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

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

  

Gallery.java（模型）

public class Gallery {
private List<GalleryImages> gallery;

public Gallery() {
}

public Gallery( List<GalleryImages> gallery) {
    this.gallery = gallery;
}

public List<GalleryImages> getGallery() {
    return gallery;
}

public void setGallery(List<GalleryImages> gallery) {
    this.gallery = gallery;
    }
}

  

GalleryImages.java

public class GalleryImages {
private String image;

public GalleryImages() {
}

public GalleryImages(String image) {
    this.image = image;
}

public String getImage() {
    return image;
}

public void setImage(String image) {
    this.image = image;
   }
}