我想在另一堂课中更新我的RecyclerView列表。我无法在第二个类中调用RecyclerView适配器，实际上，在那里对适配器进行了初始化时，显示错误“ classXXX不是封闭的类”。我怎样才能做到这一点？
这是我的Fragment，其中包含名为RecyclerView的{{1}}：
AllworksFragment这是package ir.applinkfinder.hw6;
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import java.util.List;
import ir.applinkfinder.hw6.model.WorksModel;
import ir.applinkfinder.hw6.model.WorksRepository;
/**
* A simple {@link Fragment} subclass.
*/
public class AllworksFragment extends Fragment {
private RecyclerView mRecyclerView;
private MyAdapter myAdapter;
private Button mButtonInsert;
private Button mButtonRemove;
private EditText mEditTextInsert;
private EditText mEditTextRemove;
private FloatingActionButton mFloatingActionButtonAdd;
private Button mButtonAdd;
public AllworksFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_allworks, container, false);
mRecyclerView = view.findViewById(R.id.recyclerview);
mFloatingActionButtonAdd = view.findViewById(R.id.floatingActionButton_add);
mButtonAdd = view.findViewById(R.id.button_test_addd);
mButtonAdd.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = AddItemToListActivity.newIntent(getActivity());
startActivity(intent);
}
});
mFloatingActionButtonAdd.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Intent intent = AddItemToListActivity.;
Intent intent = AddItemToListActivity.newIntent(getActivity());
startActivity(intent);
}
});
myRecyclerViewLayoutManager();
updateUI();
return view;
}
private void myRecyclerViewLayoutManager(){
mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); // moshakhas mikone recyclerview chejuri namayesh dade beshe
// mRecyclerView.setLayoutManager(new GridLayoutManager(getActivity(), 3));
// LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity());
// linearLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL) ;
// mRecyclerView.setLayoutManager(linearLayoutManager);
}//myRecyclerViewLayoutManager();
private void updateUI(){
WorksRepository worksRepository = WorksRepository.getInstance();
List<WorksModel> works = worksRepository.getmWorksList();
if (myAdapter == null) {
myAdapter = new MyAdapter(works);
mRecyclerView.setAdapter(myAdapter);
}
else{
// workAdapter.setCrimeList(works);
// myAdapter.setWorkList(works);
/*
notifyDataSetChanged() method should be called after
you've updated the list which holds all your data,
in order to refresh the RecyclerView
*/
myAdapter.notifyDataSetChanged(); // jahate update e list bad az taqyir e edit text ha, in kole list racheck mikonad
// myAdapter.notifyItemChanged(positionnnn); // notifyItemChanged faqat haman position e khas ra check mikonad
}
}//updateUI
//ViewHolder
public class myViewHolder extends RecyclerView.ViewHolder{
protected TextView mTextViewTitle;
protected TextView mTextViewDetail;
protected TextView mTextViewDate;
protected TextView mTextViewHour;
public myViewHolder(View itemView) {
super(itemView);
mTextViewTitle = itemView.findViewById(R.id.textview_title);
mTextViewDetail = itemView.findViewById(R.id.textview_detail);
mTextViewDate = itemView.findViewById(R.id.textview_date);
mTextViewHour = itemView.findViewById(R.id.textview_hour);
}
}//ViewHolder
// ///////////////////////////////////////////////////////////
// CustomListListener mListener;
// public interface CustomListListener{
// void onListChanged(List<WorksModel> myList);
// }
// public void setOnListChangeListener(CustomListListener listener){
// this.mListener = listener;
// }
// Adapter
public class MyAdapter extends RecyclerView.Adapter<myViewHolder>{
private List<WorksModel> worksList;
public MyAdapter(List<WorksModel> workM) {
worksList = workM;
}
@Override
public myViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.recyclerview_item_list, parent, false);
return new myViewHolder(itemView);
}
@Override
public void onBindViewHolder(myViewHolder holder, final int position) {
WorksModel worksModel = worksList.get(position);
holder.mTextViewTitle.setText(worksModel.getTitle());
holder.mTextViewDetail.setText(worksModel.getDetail());
// holder.mTextViewDate.setText(worksModel.getDate());
holder.mTextViewHour.setText(worksModel.getHour());
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = WorkDetailActivity.newIntent(getActivity(), worksList.get(position).getTitle());
startActivity(intent);
}
});
}
// private void myAddItemMethod(int position, WorksRepository worksRepository){
// }
@Override
public int getItemCount() {
return worksList.size();
}
}//Adapter
}
，我希望向Fragment添加一些新数据：
RecyclerView问题在于，在 package ir.applinkfinder.hw6;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.ImageButton;
import java.util.ArrayList;
import java.util.Date;
import ir.applinkfinder.hw6.model.WorksModel;
import ir.applinkfinder.hw6.model.WorksRepository;
public class AddItemToListFragment extends Fragment{ // implements WorksRepository.CustomListListener {
WorksRepository mWorksRepository;
private ArrayList<WorksModel> mWorksList;
private RecyclerView.Adapter mAdapter;
private EditText mEditTextAddTitle;
private EditText mEditTextAddDetail;
private EditText mEditTextAddDate;
private EditText mEditTextAddHour;
private ImageButton mImageButtonAddDone;
public AddItemToListFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_add_item_to_list, container, false);
// WorksRepository.setOnListChangeListener(this);
mEditTextAddTitle = view.findViewById(R.id.edittext_add_title);
mEditTextAddDetail = view.findViewById(R.id.edittext_add_details);
mEditTextAddDate = view.findViewById(R.id.edittext_add_date);
mEditTextAddHour = view.findViewById(R.id.edittext_add_hour);
mImageButtonAddDone = view.findViewById(R.id.imagebutton_add_done);
mImageButtonAddDone.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
insertItem();
}
});
return view;
}
public void insertItem(){
mAdapter = new AllworksFragment.MyAdapter(mWorksRepository.getmWorksList());
// mAdapter = new AllworksFragment.MyAdapter(mWorksRepository);
mWorksRepository = new WorksRepository();
WorksModel worksModel = new WorksModel();
worksModel.setTitle(mEditTextAddTitle.getText().toString());
worksModel.setDetail(mEditTextAddDetail.getText().toString());
// worksModel.setDate(Date);
worksModel.setDate(new Date());
worksModel.setHour(mEditTextAddHour.getText().toString());
mWorksRepository.getmWorksList().add(worksModel);
// mWorksList.add(worksModel);
mAdapter.notifyDataSetChanged();
}//insertItem
}
方法中，我无法初始化insertItem()适配器。它调用错误：
“ RecyclerView不是一个封闭的片段”