Java 尝试实现RecycleView时出错

嗨，我在开发一个Android应用程序，当我尝试在应用程序的逻辑部分实现一个RecycleView时，当我调用DataSet时，我得到一个NullPointerException

我只在我的应用程序的其他类中使用适配器类，所以我想应该存在错误

这是我的代码：

MyAdapter.class

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
    private static 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 MyViewHolder extends RecyclerView.ViewHolder {
        // each data item is just a string in this case
        public CardView cardView;
        public MyViewHolder(CardView v) {
            super(v);
            cardView = v;
        }
    }

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

    // Create new views (invoked by the layout manager)
    @Override
    public MyAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent,
                                                     int viewType) {
        // create a new view
        CardView v = (CardView) LayoutInflater.from(parent.getContext())
                .inflate(R.layout.card_view_main_view, parent, false);

        MyViewHolder vh = new MyViewHolder(v);
        return vh;
    }

    // Replace the contents of a view (invoked by the layout manager)
    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        // - get element from your dataset at this position
        // - replace the contents of the view with that element
        holder.cardView.setUseCompatPadding(true);
        holder.cardView.setContentPadding(30, 30, 30, 0);
        holder.cardView.setPreventCornerOverlap(true);
        holder.cardView.setCardBackgroundColor(Color.WHITE);
        holder.cardView.setCardElevation(2.1f);
        holder.cardView.setRadius(0);
        holder.cardView.setMaxCardElevation(3f);
        /* TODO: CHARGE THE CONTENT OF EACH CARD */

    }

    // Return the size of your dataset (invoked by the layout manager)
    @Override
    public int getItemCount() {
         /**** In the next Line is where I get the NullPointerException  ***/

        return mDataset.length;
    }

    public static String[] getmDataset() {
        return mDataset;
    }
}

我正在做一个严肃的应用程序，全面实现应用程序之间的数据传递

---

所以，如果你能帮我一个忙，请接受我的邀请

您在此处从适配器获取数据：

mAdapter = new MyAdapter(MyAdapter.getmDataset()); //which is null

您应该传递一些数据集，而不是从活动、viewModel或其他任何内容

myDataSet = {"some string", "some other string"}
mAdapter = new MyAdapter(myDataSet);

myDataSet = {"some string", "some other string"}
mAdapter = new MyAdapter(myDataSet);