有没有得到从适配器父RecyclerView参考的更好的办法？

Question

我在我需要从适配器内部到父RecyclerView的参考，特别是onBindViewHolder方法内的使用情况。到目前为止，我所要做的是将其分配给沿onCreateViewHolder ARG通过像这样的viewGroup parent方法私有类成员：

private ViewGroup mParent;

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    // inflater logic.
    mParent = parent;
}

并引用在这样RecyclerView父onBindViewHolder：

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    // binder logic.
    ((RecyclerView)mParent).blahBlahBlah();
}

是否有这样做的更好的办法？也许RecyclerView.Adapter有，我可能已经错过了呢？

Answer 1

实际上，有以该重视的适配器RecyclerView callsback的具体方法。只是重写onAttachedToRecylerView(RecyclerView recyclerView)方法。

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

    RecyclerView mRecyclerView; 


    @Override
    public void onAttachedToRecyclerView(RecyclerView recyclerView) {
        super.onAttachedToRecyclerView(recyclerView);

        mRecyclerView = recyclerView;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        return null;
    }

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

        mRecyclerView....
    }

Answer 2

另一种方式是在构造函数传递一个参考，例如

public final class MyAdapter extends RecyclerView.Adapper {
    private final recyclerView;

    public MyAdapter(@NonNull RecyclerView recyclerView) {
        this.recyclerView = recyclerView;
    }

    ...

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