Case 1: Show list of productName in View while sending List<Products> productList in adapter constructor.

Case 2: Show list of categ,android,android-recyclerview"/>

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Case 1: Show list of productName in View while sending List<Products> productList in adapter constructor.

Case 2: Show list of categ

android - 是否可以创建一个接受任何对象列表的动态 RecyclerView 适配器?

Case 1: Show list of productName in View while sending List<Products> productList in adapter constructor.

Case 2: Show list of categ

问题描述

Case 1: Show list of productName in View while sending List<Products> productList in adapter constructor.

Case 2: Show list of categoryName in View while sending List<Category> categoryList in adapter constructor.

Both the cases must use the same RecyclerView Adapter.

The adapter may have List<Object> objectList. But how can show different property of the different object in the View

Check the type:

@Override
public void onBindViewHolder(WhateverHolder holder, int position) {
    Object item = itemsList.get(position);

    if (item instanceof Products) {
        Product product = (Product) item;
        //populate the ViewHolder with the information
    } else if (item instanceof Category) {
        Category category = (Category) item;
        //populate the ViewHolder
    } else {
        throw IllegalArgumentException("Invalid item: " + item.getClass().getCanonicalName()); //this is optional 
    }
}

标签： androidandroid-recyclerview

解决方案

检查类型：

@Override
public void onBindViewHolder(WhateverHolder holder, int position) {
    Object item = itemsList.get(position);

    if (item instanceof Products) {
        Product product = (Product) item;
        //populate the ViewHolder with the information
    } else if (item instanceof Category) {
        Category category = (Category) item;
        //populate the ViewHolder
    } else {
        throw IllegalArgumentException("Invalid item: " + item.getClass().getCanonicalName()); //this is optional 
    }
}

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