RecyclerView 有几个节点火力基地的孩子

Question

我被 recyclerView 错误阻止了。 " 无法将对象字符串转换为对象产品 我的愿望是在有限的项目上循环，但有一个字符串标题和一个图像，architecture of my firebase data base 在下面找到我的代码。

        NewsRef = FirebaseDatabase.getInstance().getReference().child("Products").child("Limited").child("Saint Valentin");

FirebaseRecyclerOptions<Product> options = new FirebaseRecyclerOptions.Builder<Product>()
                    .setQuery( NewsRef, Product.class )
                    .build();

            FirebaseRecyclerAdapter<Product, ProductViewHolder> adapter = new FirebaseRecyclerAdapter<Product, ProductViewHolder>(options) {

                @Override
                protected void onBindViewHolder(@NonNull final ProductViewHolder holder, int position, @NonNull final Product model) {
                    holder.title.setText( model.getTitle() );
                    Picasso.get().load( model.getImage() ).into( holder.image );
                }

当然，代码下面还有 onCreateViewHolder 函数..

public class Products {

private String title, image, category, date, number;

public Products() {
}

public Products(String title, String image, String category, String date, String number) {
    this.title = title;
    this.image = image;
    this.category = category;
    this.date = date;
    this.number = number;
}

public String getTitle() {
    return title;
}

public void setTitle(String title) {
    this.title = title;
}

public String getImage() {
    return image;
}

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

public String getCategory() {
    return category;
}

public void setCategory(String category) {
    this.category = category;
}

public String getDate() {
    return date;
}

public void setDate(String date) {
    this.date = date;
}

public String getNumber() {
    return number;
}

public void setLimitedNumber(String number) {
    this.number = number;
}

请问有人有解决办法吗？

Answer 1

您试图以错误的方式获取 API

根据下图更改数据以获取子数据（图片不正确，仅供参考）

Json 看起来像下面这样

{
"Limited": {
"Saint Valentin": [
  {
    "name": "Saint Valentin 2012",
    "image": "https://firebasestorage.googleapis.com..",
    "title": "Saint Valentin 2012"
  },
  {
    "name": "Saint Valentin 2015",
    "image": "https://firebasestorage.googleapis.com...",
    "title": "Saint Valentin 2015"
  },
  {
    "name": "Saint Valentin 2017",
    "image": "https://firebasestorage.googleapis.com...",
    "title": "Saint Valentin 2017"
  }
  ]
  }
  }