Firebase数据库:无法下载图像

时间:2018-09-28 19:59:20

标签: java firebase-realtime-database android-recyclerview firebaseui android-viewholder

我无法从数据库下载图像。我的数据库中有两个子节点。我能够成功获取Name的值,但是下载Image时出现问题。这是我的适配器类的代码:-

options = new FirebaseRecyclerOptions.Builder<Category>().setQuery(reference,Category.class).build();
    adapter = new FirebaseRecyclerAdapter<Category, MenuViewHolder>(options) {
        @Override
        protected void onBindViewHolder(@NonNull MenuViewHolder holder, int position, @NonNull Category model) {
            Picasso.get().load(model.getImage()).into(holder.img);
            holder.txt.setText(model.getName());
        }

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

    adapter.startListening();
    recyclerMenu.setAdapter(adapter);
}

型号

public class Category {
private String Name;
private String Image;

public Category() {
}

public Category(String name, String image) {
    Name = name;
    Image = image;
}

public String getName() {
    return Name;
}

public void setName(String name) {
    Name = name;
}

public String getImage() {
    return Image;
}

public void setImage(String image) {
    Image = image;
}

1 个答案:

答案 0 :(得分:0)

不建议将图像文件存储在实时数据库中。相反,您可以将映像文件存储在Firebase Cloud Storage中,然后通过将文件/路径名称存储在Firebase数据库中进行映射。