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Question

我无法将我的 textView 放在方法上绑定视图持有者从内部类项，我将其公开并最终确定，但仍然无法解决它，我尝试了许多示例，这是相同的问题。

package com.example.recyclerview;

import android.content.Context;

import android.support.annotation.NonNull;

import android.support.v7.widget.RecyclerView;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.TextView;

public class Adapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    Context context;

    String [] items;

    public Adapter(Context context, String[] items){

        this.context = context;

        this.items = items;

    }

    @NonNull

    @Override

    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {

        LayoutInflater inflater = LayoutInflater.from(context);

        View row = inflater.inflate(R.layout.custom_row, viewGroup, false);

        Item item = new Item(row);

        return item;

    }

    @Override

    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int i) {

        String mCurrent = items[i];

        viewHolder.textView.setText(mCurrent); // error here textView cannot resolve

    }

    @Override

    public int getItemCount() {

        return items.length;

    }

    public class Item extends RecyclerView.ViewHolder {

        public final TextView textView;

        public Item(@NonNull View itemView) {

            super(itemView);

            textView = (TextView) itemView.findViewById(R.id.item);

        }

    }

}

Answer 1

您应该更正适配器的通用类型：使用而不是Adapter.ItemRecyclerView.ViewHolderpublic&nbsp;class&nbsp;Adapter&nbsp;extends&nbsp;RecyclerView.Adapter<Adapter.Item>然后更新 和 方法的签名onCreateViewHolderonBindViewHolder