Question

如何使用RecyclerView在Firebase数据库的子（商店）下添加子（产品）

1。错误

找不到适合的构造函数 FirebaseRecyclerAdapter（Class，int，Class，Query）建设者 FirebaseRecyclerAdapter.FirebaseRecyclerAdapter（Class，int，Class，FirebaseArray）不适用（参数不匹配；类别不能为转换为Class）构造函数 FirebaseRecyclerAdapter.FirebaseRecyclerAdapter（Class，int，Class，Query）不适用（参数不匹配；类别不能为转换为Class）

2。我使用的代码

RecyclerView recyclerView;
RecyclerView.LayoutManager layoutManager;

FirebaseDatabase database;
DatabaseReference productList;

String foodtarastoreId;

FirebaseRecyclerAdapter<FooProduct, FooProductViewHolder> adapter;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_food_product);


    //Firebase
    database = FirebaseDatabase.getInstance();
    productList = database.getReference("Product");

    recyclerView = (RecyclerView) findViewById(R.id.recycler_fproduct_list);
    recyclerView.setHasFixedSize(true);
    layoutManager = new LinearLayoutManager(this);
    recyclerView.setLayoutManager(layoutManager);

    if(getIntent() != null)
        foodtarastoreId = getIntent().getStringExtra("foodtarastoreId");
    if (!foodtarastoreId.isEmpty() && foodtarastoreId != null)
    {
        loadListProduct(foodtarastoreId);

    }


}

private void loadListProduct(String foodtarastoreId) {


    adapter = new FirebaseRecyclerAdapter<FooProduct, FooProductViewHolder>(FoodProduct.class, R.layout.fproduct_item,
            FooProductViewHolder.class,
            productList.orderByChild("menuid").equalTo(foodtarastoreId)) {
        protected void populateViewHolder(FooProductViewHolder viewHolder, FooProduct model, int position) {



        }
    };

3。 VIEWHOLDER

public TextView fooProductName;
public ImageView fooProductImage;

private ItemClickListener itemClickListener;


public void setItemClickListener(ItemClickListener itemClickListener) {
    this.itemClickListener = itemClickListener;
}

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

    fooProductName = (TextView)itemView.findViewById(R.id.foodproduct_name);
    fooProductImage = (ImageView)itemView.findViewById(R.id.foodproduct_image);

    itemView.setOnClickListener(this);

}

@Override
public void onClick(View v) {


    itemClickListener.onClick(v, getAdapterPosition(), false);
}
}

4。 Firebase数据库中的产品

private String name, image, description, price, discount, menuid;

public FooProduct() {
}

public FooProduct(String name, String image, String description, String price, String discount, String menuid) {
    this.name = name;
    this.image = image;
    this.description = description;
    this.price = price;
    this.discount = discount;
    this.menuid = menuid;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public String getImage() {
    return image;
}

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

public String getDescription() {
    return description;
}

public void setDescription(String description) {
    this.description = description;
}

public String getPrice() {
    return price;
}

public void setPrice(String price) {
    this.price = price;
}

public String getDiscount() {
    return discount;
}

public void setDiscount(String discount) {
    this.discount = discount;
}

public String getMenuid() {
    return menuid;
}

public void setMenuid(String menuid) {
    this.menuid = menuid;
}
}

如何使用RecyclerView在

0 个答案: