我正在使用Volley Library从服务器检索数据。现在我实现了SearchView来过滤数据。在这里，我对每个tabs使用了searchview。搜索查询未正确传递给适配器类。有时它会传递。虽然它传递给适配器类，但我需要过滤从服务器检索到的数据，并且需要调整它的回收器视图。
这是我的代码..请帮我解决。
TabFragment.java
public class TabFragment_1 extends Fragment implements SearchView.OnQueryTextListener, SearchView.OnCloseListener {
public static final String MyPREFERENCES = "Preference";
Context context;
RecyclerView recyclerView;
SharedPreferences pref;
String currentTab;
private String query = "";
// private ListAdapter mAdapter;
private List<Restaurant_Beam> listSuperHeroes;
private RecyclerView.LayoutManager layoutManager;
private RecyclerView.Adapter adapter;
private int count = 0;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment, container, false);
context = getActivity();
pref = context.getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
currentTab = pref.getString("FIRST_TAB", "tab1");
Log.e("Current Tab", currentTab);
recyclerView = (RecyclerView) view.findViewById(R.id.fragment_list_rv);
layoutManager = new GridLayoutManager(context, 2);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setHasFixedSize(true);
setHasOptionsMenu(true);
listSuperHeroes = new ArrayList<>();
getData();
return view;
}
//This method will get data from the web api
private void getData() {
//Showing a progress dialog
final ProgressDialog loading = ProgressDialog.show(context, "Loading Data", "Please wait...", false, false);
//Creating a json array request
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(Config.DATA_URL, new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
//Dismissing progress dialog
loading.dismiss();
//calling method to parse json array
parseData(response);
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
});
//Creating request queue
RequestQueue requestQueue = Volley.newRequestQueue(context);
//Adding request to the queue
requestQueue.add(jsonArrayRequest);
}
private void parseData(JSONArray array) {
for (int i = 0; i < array.length(); i++) {
Restaurant_Beam superHero = new Restaurant_Beam();
JSONObject json = null;
try {
json = array.getJSONObject(i);
superHero.setStr_categoryName(json.getString(Config.CATEGORY_NAME));
superHero.setStr_productName(json.getString(Config.PRODUCT_NAME));
superHero.setStrPrice(json.getInt(String.valueOf(Config.PRICE)));
superHero.setImageUrl(json.getString(Config.TAG_IMAGE_URL));
superHero.setTAB_NAME(json.getString(Config.TAB_NAME));
} catch (JSONException e) {
e.printStackTrace();
}
if (superHero.getTAB_NAME().contains(currentTab)) {
listSuperHeroes.add(superHero);
adapter = new CardAdapter(listSuperHeroes, context);
recyclerView.setAdapter(adapter);
}
}
}
@Override
public boolean onClose() {
System.out.println("Restaurant Tab onQueryTextSubmit =" + "");
return false;
}
@Override
public boolean onQueryTextSubmit(String query) {
System.out.println("Restaurant Tab onQueryTextSubmit =" + query);
((CardAdapter) recyclerView.getAdapter()).setFilter(query);
return true;
}
@Override
public boolean onQueryTextChange(String newText) {
System.out.println("Restaurant Tab onQueryTextSubmit =" + newText);
return false;
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.main, menu);
final SearchManager searchManager = (SearchManager) getActivity().getSystemService(Context.SEARCH_SERVICE);
SearchView searchView = (SearchView) menu.findItem(R.id.action_search).getActionView();
searchView.setSearchableInfo(searchManager.getSearchableInfo(getActivity().getComponentName()));
searchView.setSubmitButtonEnabled(false);
searchView.setIconifiedByDefault(true);
searchView.setOnQueryTextListener(this);
searchView.setOnCloseListener(this);
super.onCreateOptionsMenu(menu, inflater);
}
}
CardAdapter.java：
public class CardAdapter extends RecyclerView.Adapter<CardAdapter.ViewHolder> {
List<Restaurant_Beam> restaurant_prducts;
Config config;
Bitmap bmp;
boolean success = false;
ArrayList<String> CATEGORYNAME;
ArrayList<String> ITEMNAME;
ArrayList<String> ITEM_PRICE;
ViewHolder vHolder;
ArrayList<String> visibleObjects;
ArrayList<String> wordList;
private ImageLoader imageLoader;
private Context context;
public CardAdapter(List<Restaurant_Beam> superHeroes, Context context) {
super();
this.restaurant_prducts = superHeroes;
this.context = context;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item, parent, false);
ViewHolder viewHolder = new ViewHolder(v);
return viewHolder;
}
@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
Restaurant_Beam restaurant_beam = restaurant_prducts.get(position);
imageLoader = CustomVolleyRequest.getInstance(context).getImageLoader();
imageLoader.get(config.IMAGE_URL + restaurant_beam.getImageUrl() + ".jpg", ImageLoader.getImageListener(holder.productImage, R.drawable.image_1, R.drawable.image_1)); //android.R.drawable.ic_dialog_alert
/* holder.productImage.setImageUrl(config.IMAGE_URL + restaurant_beam.getImageUrl() + ".jpg", imageLoader);
holder.txt_itemName.setText(restaurant_beam.getStr_productName());
holder.txt_categoryName.setText(String.valueOf(restaurant_beam.getStr_categoryName()));
holder.txt_Price.setText(String.valueOf(restaurant_beam.getStrPrice()));
holder.linearLayout.setVisibility(View.INVISIBLE);*/
String IMAGE_URL = config.IMAGE_URL + restaurant_beam.getImageUrl() + ".jpg";
String ITEM_NAME = restaurant_beam.getStr_productName();
String CATEGORY_NAME = restaurant_beam.getStr_categoryName();
String PRICE = String.valueOf(restaurant_beam.getStrPrice());
holder.productImage.setImageUrl(IMAGE_URL, imageLoader);
holder.txt_itemName.setText(ITEM_NAME);
holder.txt_categoryName.setText(CATEGORY_NAME);
holder.txt_Price.setText(PRICE);
holder.linearLayout.setVisibility(View.INVISIBLE);
ITEMNAME = new ArrayList<>();
CATEGORYNAME = new ArrayList<>();
ITEM_PRICE = new ArrayList<>();
ITEMNAME.add(ITEM_NAME);
CATEGORYNAME.add(CATEGORY_NAME);
ITEM_PRICE.add(PRICE);
Log.e("Filter", String.valueOf(ITEMNAME) + " ..." + CATEGORYNAME);
holder.productImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent i = new Intent(view.getContext(), ProductActivity.class);
i.putExtra("itemName", holder.txt_itemName.getText().toString());
i.putExtra("categoryName", holder.txt_categoryName.getText().toString());
i.putExtra("Price", Integer.parseInt(holder.txt_Price.getText().toString()));
view.getContext().startActivity(i);
}
});
holder.iv_settings.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
holder.linearLayout.setVisibility(View.VISIBLE);
}
});
holder.viewDetail.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(v.getContext(), "Clicked ViewDetail", Toast.LENGTH_SHORT).show();
}
});
holder.addToCart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(v.getContext(), "Clicked AddToCart", Toast.LENGTH_SHORT).show();
}
});
holder.checkOut.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(v.getContext(), "Clicked CheckOut", Toast.LENGTH_SHORT).show();
}
});
}
@Override
public int getItemCount() {
Log.e("Restaurant Size", String.valueOf(restaurant_prducts
.size()));
return restaurant_prducts.size();
}
public void setFilter(String query) {
Log.e("Adapter Query", query);
String[] stringArray = new String[restaurant_prducts.size()];
for (int i = 0; i < restaurant_prducts.size(); i++) {
System.out.println("I am inside ForLoop" + " " + i);
stringArray[i] = restaurant_prducts.get(i).toString();
}
wordList = new ArrayList<String>(Arrays.asList(stringArray));
List<Restaurant_Beam> list = new ArrayList<>(stringArray.length);
// list.addAll(wordList);
// restaurant_prducts.add(list);
//
// for(String s : stringArray){
// restaurant_prducts.add()
// }
Log.e("String array", wordList.toString());
Log.e("Adapter Query", String.valueOf(ITEMNAME) + " " + CATEGORYNAME + " " + ITEM_PRICE + " " + stringArray);
notifyDataSetChanged();
}
// public void flushFilter() {
// visibleObjects=new ArrayList<>();
// visibleObjects.addAll(allObjects);
// notifyDataSetChanged();
// }
public class ViewHolder extends RecyclerView.ViewHolder {
public NetworkImageView productImage;
public TextView txt_categoryName;
public TextView txt_itemName, txt_Price;
public CardView cardlist_item;
public ImageView iv_settings;
public LinearLayout linearLayout;
public Button viewDetail, addToCart, checkOut;
public ViewHolder(View itemView) {
super(itemView);
iv_settings = (ImageView) itemView.findViewById(R.id.iv_settings);
cardlist_item = (CardView) itemView.findViewById(R.id.cardlist_item);
txt_itemName = (TextView) itemView.findViewById(R.id.txt_itemName);
txt_Price = (TextView) itemView.findViewById(R.id.txt_Price);
txt_categoryName = (TextView) itemView.findViewById(R.id.txt_categoryName);
productImage = (NetworkImageView) itemView.findViewById(R.id.productImage);
linearLayout = (LinearLayout) itemView.findViewById(R.id.linearTransparent);
viewDetail = (Button) itemView.findViewById(R.id.butViewDetail);
addToCart = (Button) itemView.findViewById(R.id.but_addTCart);
checkOut = (Button) itemView.findViewById(R.id.butCheckOut);
}
}
}
答案 0 :(得分：0)
按如下所示更改你的onQuerryTextSubmit
@Override
public boolean onQueryTextSubmit(String query) {
System.out.println("Restaurant Tab onQueryTextSubmit =" + query);
adapter.setFilter(query);
return true;
}
同时初始化适配器并将其设置为oncreate中的recycler视图。获取数据后，您可以将其添加到arraylist并调用adapter.notifydatasetchanged。这样只会出现一个arraylist，并且将始终调用onquerytext submit并反映数据更改。
这也不是过滤数据的正确方法，因为这里过滤是在主线程上完成的，您的自定义适配器应该实现Filterable。在这里查看http://developer.android.com/reference/android/widget/Filterable.html