Java RecyclerView：未连接适配器；跳过布局？我该怎么办？

今天我的申请有这个问题；我想说的是，我阅读了StackOverflow上的几乎所有其他问题，但没有，总是相同的问题

homepage.java（主类）

MyAdapter.java（Android Studio指南中的默认代码）

在这里：

这就像在

活动

中膨胀布局，您已经在

片段

中创建了

视图

和

将第一个代码更改为：

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

}

然后，在

onCreateView（）内部初始化
RecyclerView

您忘记添加
tablaylout.setupWithViewPager（mviewpage）在你的
主页中。java
哪里出错？当我尝试切换到“fibra片段”时。没有，同样的问题：（你还忘了添加
tablaylout.setupWithViewPager（mViewPager）；
，正如其他用户所提到的，但情况并非如此。现在，选项卡是否打开？我将该字符串放在“onCreate”中方法，但我总是有同样的问题，现在，使用这个字符串，我看不到男人的项目！同样的问题，但现在我看不到男人的项目！可能是菜单项目的问题，只是因为你的style.xml或颜色控件或图标颜色。你能分享你的
菜单u homepage.xml
#E60000#cc0000#FF4081吗#FFFFFF但对于每个片段，我使用的颜色是“#efefeff”，而不是您在colors.xml文件中看到的颜色，如果您要在片段中显示菜单，请在片段的onCreateView方法中添加此行setHasOptions菜单（true）。没有，相同的问题
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> 
{
private String[] mDataset;
    public static class MyViewHolder extends RecyclerView.ViewHolder {
        public TextView mTextView;
        public MyViewHolder(TextView v) {
            super(v);
            mTextView = v;
        }
    }
    public MyAdapter(String[] myDataset) {
        mDataset = myDataset;
    }
    @Override
    public MyAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        TextView v = (TextView) LayoutInflater.from(parent.getContext()).inflate(android.R.layout.simple_list_item_1, parent, false);

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

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        holder.mTextView.setText(mDataset[position]);
    }
    @Override
    public int getItemCount() {
        return mDataset.length;
    }
}

public class fibra extends Fragment {
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
private String mParam1;
private String mParam2;
private OnFragmentInteractionListener mListener;
private RecyclerView recyclerView;
private MyAdapter adapter;
private LinearLayoutManager llm;
String [] prova={"prova1","prova2","prova2","prova2","prova2","prova2","prova2"};

public fibra() {
}
public static fibra newInstance(String param1, String param2) {
    fibra fragment = new fibra();
    Bundle args = new Bundle();
    args.putString(ARG_PARAM1, param1);
    args.putString(ARG_PARAM2, param2);
    fragment.setArguments(args);
    return fragment;
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    //setContentView(R.layout.my_activity); (doesn't work "cannot resolve method")

    recyclerView.setHasFixedSize(true); //per migliorare performance

    llm = new LinearLayoutManager(getActivity());
    llm.setOrientation(LinearLayoutManager.VERTICAL);
    recyclerView.setLayoutManager(llm);

    adapter = new MyAdapter(prova);
    recyclerView.setAdapter(adapter);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    View rootView = inflater.inflate(R.layout.fragment_fibra, container, false);
    return rootView;

}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
    if (mListener != null) {
        mListener.onFragmentInteraction(uri);
    }
}
@Override
public void onAttach(Context context) {
    super.onAttach(context);
    if (context instanceof OnFragmentInteractionListener) {
        mListener = (OnFragmentInteractionListener) context;
    } else {
        throw new RuntimeException(context.toString()
                + " must implement OnFragmentInteractionListener");
    }
}

@Override
public void onDetach() {
    super.onDetach();
    mListener = null;
}
public interface OnFragmentInteractionListener {
    void onFragmentInteraction(Uri uri);
}
}

//setContentView(R.layout.my_activity); (doesn't work "cannot resolve method")

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

}

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        View rootView = inflater.inflate(R.layout.fragment_fibra, container, false);
        // Here you should initialize RecyclerView and other widgets by rootView.findViewById and etc
        recyclerView = (RecyclerView) rootView.findViewById(R.id.recyclerView);

        recyclerView.setHasFixedSize(true); //per migliorare performance

        llm = new LinearLayoutManager(getActivity());
        llm.setOrientation(LinearLayoutManager.VERTICAL);
        recyclerView.setLayoutManager(llm);

        adapter = new MyAdapter(prova);
        recyclerView.setAdapter(adapter);

        return rootView;

    }