RecyclerView.Adapter没有看到覆盖onBindViewHolder

Question

我在我的项目中使用DataBindings和RecyclerView.我有RecyclerView的基础适配器.看起来像这样

public abstract class BaseAdapter<T extends ViewDataBinding> extends RecyclerView.Adapter<BaseAdapter.ViewHolder> {

    public BaseAdapter() {}

    public class ViewHolder extends RecyclerView.ViewHolder {

        public T binding;

        public ViewHolder(View view) {
            super(view);
            binding = DataBindingUtil.bind(view);
        }
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        ... code ...
        }

}

ViewHolder扩展类只有绑定字段类型不同.在扩展BaseAdapter类的实现之后:

public class BaseAdapterExtended extends BaseAdapter<BaseAdapterExtendedBinding> {

    public BaseAdapterExtended(ArrayList<ItemModel> itemModels) {
        super();
        mData = itemModels;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        LayoutInflater inflater = LayoutInflater.from(parent.getContext());
        return new ViewHolder(BaseAdapterExtendedBinding.inflate(inflater, parent, false).getRoot());
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        super.onBindViewHolder(holder, position);
    }

    @Override
    protected View getItemRootView(ViewHolder holder) {
        return holder.binding.item;
    }

    @Override
    public int getItemCount() {
        return mData.size();
    }
}

我有下一个编译错误:

error: BaseAdapterExtended is not abstract and does not override abstract method onBindViewHolder(BaseAdapter.ViewHolder,int) in Adapter

似乎BaseAdapterExtended没有这种方法,但他存在.如果我改变

public void onBindViewHolder(ViewHolder holder, int position)

至

public void onBindViewHolder(BaseAdapter.ViewHolder holder, int position)

预测编译正常,但类型绑定将是ViewDataBinding而不是BaseAdapterExtendedBinding.为什么会这样？有任何想法吗？

Answer 1

在我的情况下,我忘记了参数化我的超类.在创建我尚未创建的类时ViewHolder,除了该方法的错误外,它非常宽松.即:

public class FooAdapter extends RecyclerView.Adapter {

不得不改为

public class FooAdapter extends RecyclerView.Adapter<FooAdapter.FooViewHolder> {

无论如何都需要这样做,但我得到的唯一编译器错误是onBindViewHolder.

Answer 2

在这一行:

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    super.onBindViewHolder(holder, position);
}

更换ViewHolder与BaseAdapterExtended.ViewHolder

Answer 3

对我来说效果很好！//就像我的图像视图

@Override
    public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, final int i) {
        MyViewHolder myViewHolder1 = (MyViewHolder)viewHolder;
        myViewHolder1.like.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(context, "yay" + i, Toast.LENGTH_SHORT ).show();
            }
        });
    }