Android 不在SearchView中显示结果&；回收视图/卡片视图

我在我的应用程序中添加了一个SearchView，唯一的问题是它没有显示结果，我可能知道原因，因为它没有与生成的新项目（新项目）或其他我不知道的内容链接

以下是文件：

适配器：

public class RecyclingViewAdapter extends RecyclerView.Adapter<RecyclingViewAdapter.MyRecycleViewHolder>{

//Booleans for Expand & Favorite Buttons Visibility
boolean expand_visibility = true;

//Booleans favorite Buttons
boolean fav_button = true;

//Settings ItemsData List & Recycling Info
List<itemsdata> data = Collections.emptyList();

private final LayoutInflater inflater;
public RecyclingViewAdapter adapter;

public RecyclingViewAdapter(Context context,List<itemsdata> data)
{
    inflater = LayoutInflater.from(context);
    this.data = data;
}

@Override
public MyRecycleViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = inflater.inflate(R.layout.custom_row, parent,false);
    MyRecycleViewHolder MyHolder = new MyRecycleViewHolder(view);
    return MyHolder;
}

@Override
public void onBindViewHolder(final MyRecycleViewHolder holder, int position) {

    //Referencing Data
    final itemsdata currentobject = data.get(position);
    //Referencing Items
    holder.ProbTitle.setText(currentobject.title);
    holder.ProbDescr.setText(currentobject.Descr);
    holder.CategoryPic.setImageResource(currentobject.CatPic);
    holder.ExpandButton.setImageResource(currentobject.Exapnd);
    holder.ExpandNoButton.setImageResource(currentobject.expand_no);

    //Swipe Layout Codes
    holder.swipeLayout.setShowMode(SwipeLayout.ShowMode.PullOut);
    // Drag From Right
    holder.swipeLayout.addDrag(SwipeLayout.DragEdge.Right, holder.swipeLayout.findViewById(R.id.bottom_wrapper));
    // Handling different events when swiping
    holder.swipeLayout.addSwipeListener(new SwipeLayout.SwipeListener() {
        @Override
        public void onClose(SwipeLayout layout) {
            //when the SurfaceView totally cover the BottomView.
        }

        @Override
        public void onUpdate(SwipeLayout layout, int leftOffset, int topOffset) {
            //you are swiping.
        }

        @Override
        public void onStartOpen(SwipeLayout layout) {

        }

        @Override
        public void onOpen(SwipeLayout layout) {
            //when the BottomView totally show.
        }

        @Override
        public void onStartClose(SwipeLayout layout) {

        }

        @Override
        public void onHandRelease(SwipeLayout layout, float xvel, float yvel) {
            //when user's hand released.
        }
    });


    holder.swipeLayout.getSurfaceView().setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        }
    });

    /*
    //What Happen When You Press "Star" Text .
    holder.Card_Star.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (fav_button) {
                Toast.makeText(view.getContext(), "Starred!", Toast.LENGTH_LONG).show();
                holder.Card_Star.setVisibility(View.GONE);
                holder.Card_UnStar.setVisibility(View.VISIBLE);
                fav_button = false;
            }
        }
    });

    //What Happen When You Re-Press "Star" Text .
    holder.Card_UnStar.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (fav_button == false) {
                holder.Card_UnStar.setVisibility(View.GONE);
                holder.Card_Star.setVisibility(View.VISIBLE);
                Toast.makeText(view.getContext(), "Removed", Toast.LENGTH_LONG).show();
                fav_button = true;
            }
        }
    });
    */
    //What Happen When You Press "Share" Text .
    holder.Card_Share.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            String shareQ = view.getContext().getString(R.string.ShareQ);
            String shareA = view.getContext().getString(R.string.ShareA);
            String shareinfo = view.getContext().getString(R.string.ShareInfo);
            String sharetitle = currentobject.title;
            String sharedescription = currentobject.Descr;
            Intent share = new Intent(Intent.ACTION_SEND);
            share.setType("text/plain");
            share.putExtra(Intent.EXTRA_TEXT,
                    shareQ + " " + sharetitle
                    + "\n"
                    + "\n"
                    + shareA + " " + sharedescription
                    + "\n"
                    + "\n"
                    + shareinfo
                    );
            view.getContext().startActivity(Intent.createChooser(share, "Share The Answer"));
        }
    });

    //What Happen When You Click Expand Button .
    holder.ExpandButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (expand_visibility) {
                //Set Expand Button To Gone
                holder.ExpandButton.setVisibility(View.GONE);
                //Set Description To Visible
                holder.ProbDescr.setVisibility(View.VISIBLE);
                //Set UnExpand To Button Visible
                holder.ExpandNoButton.setVisibility(View.VISIBLE);
                expand_visibility = false;
            }
        }
    });

    //What Happen When You Click UnExpand Button
    holder.ExpandNoButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (expand_visibility == false) {
                //Set Description To Gone
                holder.ProbDescr.setVisibility(View.GONE);
                //Set UnExpand Button To Gone
                holder.ExpandNoButton.setVisibility(View.GONE);
                //Set Expand Button To Visible
                holder.ExpandButton.setVisibility(View.VISIBLE);
                expand_visibility = true;
            }

        }
    });

}

@Override
public int getItemCount() {
    return data.size();
}

public static class MyRecycleViewHolder extends RecyclerView.ViewHolder
{
    SwipeLayout swipeLayout;
    //Defining Items .
    TextView ProbTitle;
    ImageButton ExpandButton;
    TextView ProbDescr;
    ImageButton ExpandNoButton;
    ImageView CategoryPic;
    /*
    TextView Card_Star;
    TextView Card_UnStar;
    */
    TextView Card_Share;

    //Referencing Resources
    public MyRecycleViewHolder(View itemView) {
        super(itemView);
        ProbTitle = (TextView) itemView.findViewById(R.id.prob_title);
        CategoryPic = (ImageView) itemView.findViewById(R.id.cat_pic);
        ProbDescr = (TextView) itemView.findViewById(R.id.prob_descr);
        ExpandButton = (ImageButton) itemView.findViewById(R.id.expand_button);
        ExpandNoButton = (ImageButton) itemView.findViewById(R.id.expand_no_button);
        /*
        Card_Star = (TextView) itemView.findViewById(R.id.card_star);
        Card_UnStar = (TextView) itemView.findViewById(R.id.card_unstar);
        */
        Card_Share = (TextView) itemView.findViewById(R.id.card_share);
        swipeLayout = (SwipeLayout) itemView.findViewById(R.id.swipe);
    }

}

public void setFilter(List<itemsdata> searchingdata) {
    data = new ArrayList<>();
    data.addAll(searchingdata);
    notifyDataSetChanged();
}

}

正如你所看到的，它与新项目没有联系，我不知道我该怎么做。

---

提前谢谢

编写这么多代码并想知道为什么所有的代码都不起作用，制作一个新的适配器，一步一步来看看你做错了什么。即使是专业人士，调试此代码也至少需要10分钟。只有添加到适配器并与搜索相关的代码是“setFilter”，所以我认为它与此无关，对吗？很难说是什么导致了问题，我能给出的唯一建议是从头开始，看看是什么导致了问题。@AshkanGhodrat关于SearchView和RecyclerView的可用方法是不同的，而且没有关于CardView SearchView的提示/教程。另外，问题只存在于过滤代码中，搜索栏工作正常，但不管你输入什么文本，它都不会过滤视图。

public class tab_1 extends Fragment implements SearchView.OnQueryTextListener {

private List<itemsdata> msearchingdata;
private RecyclerView mRecyclerView;
public RecyclingViewAdapter adapter;

@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View layout = inflater.inflate(R.layout.tab_1, container, false);
    mRecyclerView = (RecyclerView)layout.findViewById(R.id.recycler_view);
    mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
    adapter = new RecyclingViewAdapter(getActivity(),getData());
    mRecyclerView.setAdapter(adapter);
    return layout;

}

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    inflater.inflate(R.menu.main, menu);
    final MenuItem item = menu.findItem(R.id.action_search);
    final SearchView searchView = (SearchView) MenuItemCompat.getActionView(item);
    searchView.setOnQueryTextListener(this);

    MenuItemCompat.setOnActionExpandListener(item,
            new MenuItemCompat.OnActionExpandListener() {
                @Override
                public boolean onMenuItemActionCollapse(MenuItem item) {
                    // Do something when collapsed
                    adapter.setFilter(msearchingdata);
                    return true; // Return true to collapse action view
                }

                @Override
                public boolean onMenuItemActionExpand(MenuItem item) {
                    // Do something when expanded
                    return true; // Return true to expand action view
                }
            });
}

@Override
public boolean onQueryTextChange(String newText) {
    final List<itemsdata> filteredModelList = filter(msearchingdata, newText);
    adapter.setFilter(filteredModelList);
    return true;
}

@Override
public boolean onQueryTextSubmit(String query) {
    return false;
}

private List<itemsdata> filter(List<itemsdata> current2, String query) {
    query = query.toLowerCase();

    final List<itemsdata> filteredModelList = new ArrayList<>();
    for (itemsdata model : current2) {
        final String text = model.getText().toLowerCase();
        if (text.contains(query)) {
            filteredModelList.add(model);
        }
    }
    return filteredModelList;
}

public List<itemsdata> getData()
{
    //Titles Strings
    String sys_title1 = getString(R.string.system_item_title_1);
    String sys_title2 = getString(R.string.system_item_title_2);
    String sys_title3 = getString(R.string.system_item_title_3);

    //Description Strings
    String sys_descr1 = getString(R.string.system_item_desc_1);
    String sys_descr2 = getString(R.string.system_item_desc_2);
    String sys_descr3 = getString(R.string.system_item_desc_3);

    //Adding New Cards
    List<itemsdata> data = new ArrayList<>();

    //Categories Icons New Items ** Make It The Same
    int[] icons = {
            R.drawable.facebook_icon ,
            R.drawable.twitter_icon ,
            R.drawable.twitter_icon
    };

    //Expand Button New Items
    int[] expandbutton = {
            R.drawable.expanded ,
            R.drawable.expanded ,
            R.drawable.expanded
    };

    //UnExpand Button New Items
    int[] unexpandbutton = {
            R.drawable.ca_expand ,
            R.drawable.ca_expand ,
            R.drawable.ca_expand
    };

    //Titles New Items
    String[] titles = {
            sys_title1 ,
            sys_title2 ,
            sys_title3
    };

    //Description New Items
    String[] Description = {
            sys_descr1 ,
            sys_descr2 ,
            sys_descr3
    };


    for(int i = 0;i<titles.length && i < icons.length  && i < Description.length ; i++)
    {
        itemsdata current = new itemsdata();
        current.CatPic = icons[i];
        current.title = titles[i];
        current.Descr = Description[i];
        data.add(current);
    }
    return data;
}


}

public class itemsdata {
int CatPic;
String title;
String Descr;
int Exapnd;
int expand_no;

public String getText() {
    return title;
}

}