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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.ViewHolder

public class Adapter extends RecyclerView.Adapter<Adapter.Item>

然后更新 和 方法的签名onCreateViewHolderonBindViewHolder