java - [Android][RecyclerView] 方法不会覆盖或实现父类(super class)型的方法

Question

我正在开发一个简单的 Android 应用程序，如下 this教程。我在 onBindViewHolder 方法上遇到编译错误，并显示以下消息:

错误:方法没有重写或实现父类(super class)型的方法

这是我的代码:

import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

public class CryptogramPairingAdapter extends RecyclerView.Adapter {
    private String[] mDataset;

    // Provide a reference to the views for each data item
    // Complex data items may need more than one view per item, and
    // you provide access to all the views for a data item in a view holder
    public static class ViewHolder extends RecyclerView.ViewHolder {
        // each data item is just a string in this case
        public TextView mTextView;
        public ViewHolder(TextView v) {
            super(v);
            mTextView = v;
        }
    }

    // Provide a suitable constructor (depends on the kind of dataset)
    public CryptogramPairingAdapter(String[] myDataset) {
        mDataset = myDataset;
    }

    // Create new views (invoked by the layout manager)
    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent,
                                                   int viewType) {
        // create a new view
        TextView v = (TextView) LayoutInflater.from(parent.getContext())
                .inflate(R.layout.pair_crypto_recyclerview, parent, false);
        CryptogramPairingAdapter.ViewHolder vh = new ViewHolder(v);
        return vh;
    }

    // Replace the contents of a view (invoked by the layout manager)
    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        // - get element from your dataset at this position
        // - replace the contents of the view with that element
        holder.mTextView.setText(mDataset[position]);

    }

    // Return the size of your dataset (invoked by the layout manager)
    @Override
    public int getItemCount() {
        return mDataset.length;
    }
}

我很困惑，因为代码与引用几乎相同(除了修改后的名称)。

Answer 1

我建议您将 ViewHolder 更改为 ViewHolder 以外的名称，因为它与 ViewHolder 冲突，并且只会导致您无法区分 ViewHolder 和 ViewHolder。

_{(和 I complained to Google about this lousy practice in their example )}

鉴于当前状态的代码，请更改:

public class CryptogramPairingAdapter extends RecyclerView.Adapter

至:

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