在 Recycler 视图上配置搜索视图

Question

当我在我的应用程序中搜索某些内容时，搜索项的文本已更改，因为搜索更改了它的位置...

我的适配器的OnBindViewHolder配置“setText”应该设置在一个位置，但是当我搜索东西时，搜索到的项目在Recycler View中的位置变成了第一个项目，所以setText改变了他的文本对于第一项文本。

错误

文本“receita torta”更改为“receita pudim”：
1: https://i.stack.imgur.com/F5CzW.gif

适配器

public class AdapterLanches extends RecyclerView.Adapter<AdapterLanches.MyViewHolder> implements Filterable {

private List<Lanches> listaLanches;
private List<Lanches> listaLanchesCompleta;

int estadoPrograma;

public class MyViewHolder extends RecyclerView.ViewHolder {

    TextView titulo;

    public MyViewHolder(@NonNull View itemView) {
        super(itemView);

        titulo = itemView.findViewById(R.id.textnomeLancheId);

    }
}


public AdapterLanches(List<Lanches> listaLanches) {
    this.listaLanches = listaLanches;
    listaLanchesCompleta = new ArrayList<>(listaLanches);

}



@NonNull
@Override
public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
    View itemListaLanches = LayoutInflater.from(parent.getContext()).inflate(R.layout.adapter_lanches, parent, false);

    return new MyViewHolder(itemListaLanches);
}

@Override
public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
    Lanches itemAtual = listaLanches.get(position);
    
    holder.titulo.setText(itemAtual.getTitulo());


}

@Override
public int getItemCount() {

    return listaLanches.size();
}



@Override
public Filter getFilter() {
    return lanchesFilter;
}

private Filter lanchesFilter = new Filter() {
    @Override
    protected FilterResults performFiltering(CharSequence constraint) {
        List<Lanches> filteredList = new ArrayList<>();
        if (constraint == null || constraint.length() == 0){
            filteredList.addAll(listaLanchesCompleta);
        }else{
            estadoPrograma = 1;
            String filterPattern = constraint.toString().toLowerCase().trim();

            for ( Lanches item : listaLanchesCompleta){
                if (item.getTitulo().toLowerCase().contains(filterPattern)){
                    filteredList.add(item);
                }
            }
        }
        FilterResults results = new FilterResults();
        results.values = filteredList;

        return results;
    }

    @Override
    protected void publishResults(CharSequence constraint, FilterResults results) {
        listaLanches.clear();
        listaLanches.addAll( (List) results.values);
        notifyDataSetChanged();

    }
};

}

Lanches 上的搜索菜单 Activity

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.menu_lanches, menu);
    MenuItem searchItem = menu.findItem(R.id.pesquisaIcone);
    SearchView searchView = (SearchView) searchItem.getActionView();

    searchView.setImeOptions(EditorInfo.IME_ACTION_DONE);


    searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
        @Override
        public boolean onQueryTextSubmit(String query) {
            return false;
        }

        @Override
        public boolean onQueryTextChange(String newText) {
            AdapterLanches adapterLanches = new AdapterLanches(listaLanches);
            adapterLanches.getFilter().filter(newText);
            return false;
        }
    });
    return true;
}

}

Answer 1

发生此错误是因为您没有为您的适配器使用相同的引用 class。

@Override
        public boolean onQueryTextChange(String newText) {
            AdapterLanches adapterLanches = new AdapterLanches(listaLanches);
            adapterLanches.getFilter().filter(newText);
            return false;
        }

在此方法中，您应该使用与以前相同的引用，当您将列表提交到 RecyclerView 时，该方法也应该 return true。

蟒蛇朋友！

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