java - onBindViewHolder 必须声明为抽象的

Question

我收到错误:“FlickrRecyclerViewAdapter”类必须声明为抽象类或在“适配器”中实现方法抽象方法 onBindViewHolder(VH, int)

虽然这个错误应该是 self 解释的，但我已经实现了 onBindViewHolder 并且错误仍然存​​在。

相关代码-

public class FlickrRecyclerViewAdapter extends RecyclerView.Adapter {
    private List<Photo> mPhotosList;
    private Context mContext;

    public FlickrRecyclerViewAdapter(Context context, List<Photo> photosList) {
        mContext = context;
        this.mPhotosList = photosList;
    }

    @Override
    public void onBindViewHolder(FlickrImageViewHolder flickrImageViewHolder, int i) {

            Photo photoItem = mPhotosList.get(i);
            Picasso.with(mContext).load(photoItem.getmImage())
                    .error(R.drawable.placeholder)
                    .placeholder(R.drawable.placeholder)
                    .into(flickrImageViewHolder.thumbnail);

        }
    }

谢谢

Answer 1

适配器的定义是

RecyclerView.Adapter<VH extends android.support.v7.widget.RecyclerView.ViewHolder>

VH 是 ViewHolder 的子类。所以你可以改变你 onBindViewHolder 的签名，比如

@Override
public void onBindViewHolder(RecyclerView.ViewHolder flickrImageViewHolder, int i) {

或改变

extends RecyclerView.Adapter {

与

extends RecyclerView.Adapter<FlickrImageViewHolder> {