Question

我正在尝试在工具栏中实现SearchView。当我尝试搜索我的列表时，在尝试进行搜索时，始终返回原始列表而不是新列表。

当我调试时，它开始显示其中包含正确数量的项目的新列表，但是当它完成时它只返回原始列表大小。

调试时进入publicResults，但不更新适配器。不知道为什么它会获得新列表但不能替换旧列表。

实现SearchView的活动

public class LoadsActivity extends AppCompatActivity implements SearchView.OnQueryTextListener{

    @Inject
    Lazy<IMyLoadsRetroService> retroService;

    @Inject
    IUser user;

    public LoadsActivity() {
        Injector.INSTANCE.getViewComponent(this).inject(this);
    }


    public static void startLoadsActivity(Context context) {
        Intent loadsIntent = new Intent(context, LoadsActivity.class);
        context.startActivity(loadsIntent);
    }

    @BindView(R.id.recyclerView)
    RecyclerView recyclerView;
    @BindView(R.id.loadProgressBar)
    ProgressBar loadProgressBar;
    @BindView(R.id.fab)
    FloatingActionButton fab;

    LoadAdapter loadAdapter;
    private List<IMyLoadSummary> myLoadSummaryList = new ArrayList<>();

    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_loads);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        ButterKnife.bind(this);

        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        loadAdapter = new LoadAdapter(this, myLoadSummaryList);
        recyclerView.setAdapter(loadAdapter);

        loadProgressBar.setVisibility(View.VISIBLE);

        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                MainActivity.startLoadsActivity(LoadsActivity.this);
            }
        });


        retroService.get().getMyLoads().subscribeOn(Schedulers.io()).observeOn(rx.android.schedulers.AndroidSchedulers.mainThread())
                .subscribe(new Subscriber<List<MyLoadSummary>>() {
                    @Override
                    public void onCompleted() {
                        loadProgressBar.setVisibility(View.GONE);
                    }

                    @Override
                    public void onError(Throwable e) {
                        Toaster.s(LoadsActivity.this, e.getMessage());
                    }

                    @Override
                    public void onNext(List<MyLoadSummary> myLoadSummaries) {
                        loadAdapter.setLoadData(myLoadSummaries);
                    }
                });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);

        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
        final MenuItem searchItem = menu.findItem(R.id.action_search);
        final SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);

        searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
        searchView.setOnQueryTextListener(this);
        return true;
    }



    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_search) {


            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onBackPressed() {
        //leaving blank to disable back button
    }


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

    @Override
    public boolean onQueryTextChange(String newText) {
        loadAdapter.getFilter().filter(newText);
        return true;
    }
}

带过滤器的适配器

public class LoadAdapter extends RecyclerView.Adapter<LoadAdapter.ViewHolder> implements Filterable {

    private Context mContext;
    private List<? extends IMyLoadSummary> originalList;
    private List<? extends IMyLoadSummary> filteredList;

    public LoadAdapter(Context context, List<IMyLoadSummary> list) {
        this.mContext = context;
        this.originalList = list;
        this.filteredList = list;

        getFilter();
    }

    public void setLoadData(List<? extends IMyLoadSummary> mLoadData) {
        originalList = mLoadData;
        notifyDataSetChanged();
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.recycler_row, parent, false);
        return new ViewHolder(v);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        Gson gson = GsonFactory.getDefault();
        String jsonListString = gson.toJson(originalList.get(position));
        holder.loadsTextView.setText(jsonListString);
    }

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

    @Override
    public Filter getFilter() {
        return new Filter() {
            @Override
            protected FilterResults performFiltering(CharSequence constraint) {
                FilterResults filteredResults = new FilterResults();
                if (constraint != null && constraint.length() > 0) {
                    ArrayList<IMyLoadSummary> tempList = new ArrayList<>();

                    //search content for any number...hopefully
                    for (IMyLoadSummary myLoadSummary : originalList) {
                        if (Integer.toString(myLoadSummary.getNumber()).contains(constraint.toString())) {
                            tempList.add(myLoadSummary);
                        }
                    }
                    filteredResults.count = tempList.size();
                    filteredResults.values = tempList;
                } else {
                    filteredResults.count = originalList.size();
                    filteredResults.values = originalList;
                }

                return filteredResults;
            }

            @Override
            protected void publishResults(CharSequence constraint, FilterResults results) {
                filteredList = (List<? extends IMyLoadSummary>) results.values;
                notifyDataSetChanged();
            }
        };
    }

    public class ViewHolder extends RecyclerView.ViewHolder {

        public TextView loadsTextView;

        public ViewHolder(View itemView) {
            super(itemView);

            loadsTextView = (TextView) itemView.findViewById(R.id.loadJSONText);
        }
    }
}

Answer 1

我想建议的是将数据保存到android sqlite然后运行select * from table_name，其中名称如＆＃39;％string％＆＃34;＆＃39 ;;查询并在listview中显示它.hope它可以帮助你这是一种简单的搜索方式，也是最快的

SearchView.OnQueryTextListner始终返回原始列表

1 个答案: