有没有更好的方法从适配器获取对父级RecyclerView的引用？

Question

我有一个用例,我需要RecyclerView从适配器内部引用父,特别是在onBindViewHolder方法内.到目前为止,我正在做的是将它分配给onCreateViewHolder传递viewGroup parentarg 的方法中的私有类成员,如下所示:

private ViewGroup mParent;

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

并引用父RecyclerView在onBindViewHolder这样的:

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

有没有更好的方法呢？也许RecyclerView.Adapter有一种我可能错过的方式？

Answer 1

实际上有一个特定的方法,使用RecyclerView附加到适配器的回调.只需覆盖该onAttachedToRecylerView(RecyclerView recyclerView)方法即可.

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....
    }