When i search it should only search first five characters from the array,
this is an app for finding dreams meaning, its like a dictionary app.
I added 2 listviews, and using a searchview to filter the results. but when i use searchview its searching the whole content in the array, and listing the result based on it which cause wrong results.
if i could search only the first five characters from these arrays, it will help me to get right results.
this is how i get the data from database
listView2 = findViewById(R.id.listView2);
sr_txt = findViewById(R.id.sr_txt);
listView = findViewById(R.id.listView);
databaseReference = FirebaseDatabase.getInstance().getReference("dreamapp");
dream1 = new Dream();
title_list = new ArrayList<>();
answer_list = new ArrayList<>();
arrayAdapter = new ArrayAdapter<>(this, R.layout.item, R.id.item, title_list);
arrayAdapter2 = new ArrayAdapter<>(this, R.layout.item2, R.id.item2, answer_list);
databaseReference.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot snapshot) {
for (DataSnapshot d : snapshot.getChildren()) {
dream1 = d.getValue(Dream.class);
title_list.add(dream1.getTitle());
answer_list.add(dream1.getAnswer());
}
listView.setAdapter(arrayAdapter);
listView2.setAdapter(arrayAdapter2);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int i, long id) {
Intent intent = new Intent(MainActivity.this, answer.class);
// String q = answer_list.get(i);
// String p =answer_list.get(i);
String q = (String) arrayAdapter2.getItem(i);
intent.putExtra("answer", q);
startActivity(intent);
}
});
}
#Override
public void onCancelled(#NonNull DatabaseError error) {
}
});
this is my searchview.
sr_txt.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
MainActivity.this.arrayAdapter.getFilter().filter(query);
MainActivity.this.arrayAdapter2.getFilter().filter(query);
return false;
}
#Override
public boolean onQueryTextChange(String newText) {
MainActivity.this.arrayAdapter.getFilter().filter(newText);
MainActivity.this.arrayAdapter2.getFilter().filter(newText);
return false;
}
});
Please give more detail of what you want.It would be more clear if you dont mind uploading image of what you are getting and what you want.
Related
I need to delete the item from database and ListView. I can delete the item from ListView but i can't delete it from database. I think the problem is in getting the position of the item from the database i tried to do it in my own but it does not work. I don't know what should I do.Help me to slove this.
myDB = new DbHandler(this);
userList = new ArrayList<>();
data = myDB.getListContents();
numRows = data.getCount();
if (numRows == 0) {
Toast.makeText(AddCount.this, "No Items", Toast.LENGTH_LONG).show();
} else {
while (data.moveToNext()) {
user = new User(data.getString(1), data.getString(2));
userList.add(user);
}
}
adapter = new Two_columnListAdapter(this, R.layout.list_item_layout, userList);
listView.setAdapter(adapter);
adapter.notifyDataSetChanged();
listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
#Override
public boolean onItemLongClick(final AdapterView<?> arg0, View arg1, final int arg2, final long arg3) {
final AlertDialog.Builder delete = new AlertDialog.Builder(AddCount.this);
delete.setIcon(R.drawable.ic_baseline_delete_24);
delete.setTitle("Are you sure");
delete.setMessage("Do you want to delete this item?");
delete.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
DbHandler db = new DbHandler(getApplicationContext());
myDB.deleteData(userList.get(arg2));
userList.remove(arg2);
adapter.notifyDataSetChanged();
Toast.makeText(getApplicationContext(), "Deleted" ,Toast.LENGTH_SHORT).show();
}
});`
`Two_columnAdapter.java
public class Two_columnListAdapter extends ArrayAdapter<User> {
private LayoutInflater layoutInflater;
private ArrayList<User>users;
private int mviewResourceId;
public Two_columnListAdapter(Context context,int textViewResourceId,ArrayList<User>users){
super(context,textViewResourceId,users);
this.users = users;
layoutInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mviewResourceId = textViewResourceId;
}
public View getView(int position, View convertView, ViewGroup parents){
convertView = layoutInflater.inflate(mviewResourceId,null);
User user= users.get(position);
if (user != null){
TextView text = (TextView)convertView.findViewById(R.id.title);
TextView num = (TextView)convertView.findViewById(R.id.value);
if (text != null){
text.setText(user.getText());
}
if (num != null){
num.setText(user.getNum());
}
}
return convertView;
}
DatabaseHelpher(delete the single row from database)
public void deleteData(String id) {
SQLiteDatabase db = this.getWritableDatabase();
db.delete(TABLE_Inputs, KEY_ID + " =?", new String[]{id});
db.close();
}
You can save the return data inside a model class instead of a list. Then call the setOnLongClickListener in your adapter class, inside onBindViewHolder.
class listHolder extends RecyclerView.ViewHolder{
private View view;
public listHolder(#NonNull View itemView) {
super(itemView);
view = itemView;
}
}
#Override
public void onBindViewHolder(#NonNull listHolder listHolder, int position, #NonNull userModel userModel) {
viewHolder.view.setOnLongClickListener(new View.OnLongClickListener() {
#Override
public boolean onLongClick(View v) {
// Do somethings....
}
});
For more info you can check out this link, Hope this helps!
The app compiles fine but initially it shows nothing in the list. When I use the search bar, it doesn't display my filtered information and when I get rid of search, the entire list is finally display. Any help would be really appreciated, this is my first time ever coding in Java.
Here is my adapter code.
public class PokedexAdapter extends RecyclerView.Adapter<PokedexAdapter.PokedexViewHolder> implements Filterable {
public static class PokedexViewHolder extends RecyclerView.ViewHolder {
public LinearLayout containerView;
public TextView textView;
PokedexViewHolder(View view) {
super(view);
containerView = view.findViewById(R.id.pokedex_row);
textView = view.findViewById(R.id.pokedex_row_text_view);
containerView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Pokemon current = (Pokemon) containerView.getTag();
Intent intent = new Intent(v.getContext(), PokemonActivity.class);
intent.putExtra("name", current.getName());
intent.putExtra("url", current.getUrl());
v.getContext().startActivity(intent);
}
});
}
}
private List<Pokemon> pokemon = new ArrayList<>();
private RequestQueue requestQueue;
private List<Pokemon> filteredPokemon = new ArrayList<>();
PokedexAdapter(Context context) {
requestQueue = Volley.newRequestQueue(context);
loadPokemon();
}
public void loadPokemon() {
String url = "https://pokeapi.co/api/v2/pokemon?limit=365";
JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
try {
JSONArray results = response.getJSONArray("results");
for (int i = 0; i < results.length(); i++) {
JSONObject result = results.getJSONObject(i);
String name = result.getString("name");
pokemon.add(new Pokemon(
name.substring(0, 1).toUpperCase() + name.substring(1),
result.getString("url")
));
}
notifyDataSetChanged();
} catch (JSONException e) {
Log.e("cs50", "Json error", e);
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e("cs50", "Pokemon list error");
}
});
requestQueue.add(request);
}
#NonNull
#Override
public PokedexViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.pokedex_row, parent, false);
return new PokedexViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull PokedexViewHolder viewholder, int position){
Pokemon results = pokemon.get(position);
viewholder.textView.setText(results.getName());
viewholder.containerView.setTag(results);
}
#Override
public int getItemCount() {
return filteredPokemon.size();
}
#Override
public Filter getFilter() {
return new PokemonFilter();
}
private class PokemonFilter extends Filter {
#Override
protected FilterResults performFiltering(CharSequence constraint) {
// implement your search here
FilterResults results = new FilterResults();
if (constraint == null || constraint.length() == 0) {
//No filter implemented return whole list
results.values = pokemon;
results.count = pokemon.size();
}
else {
List<Pokemon> filtered = new ArrayList<>();
for (Pokemon pokemon : filtered) {
if (pokemon.getName().toUpperCase().startsWith(constraint.toString())) {
filtered.add(pokemon);
}
}
results.values = filtered;
results.count = filtered.size();
}
return results;
}
#Override
protected void publishResults(CharSequence constraint, FilterResults results) {
filteredPokemon = (List<Pokemon>) results.values;
notifyDataSetChanged();
}
}
}
I really am not sure what is going on and given my knowledge of the subject, you could really help with understanding the logic better. Please let me know if there is any other information you would like from me about the code.
You might have already solved it and finished the Android tracks but this was the only thing I changed and it seemed to work after that.
for (Pokemon pokemon : pokemon) {
if (pokemon.getName().toUpperCase().startsWith(constraint.toString().toUpperCase()) {
filtered.add(pokemon);
}
}
I want data to be displayed as shown in imageenter image description here
I want to add multiple item of same date in single card view instead of creating another card view for the item of same date
I have tried in Android Studio grouping recycler view called as sanctioned Recycler view where I used date as header but it's not the solution
My Adapter Class
private Context mContext;
List<ListItem> consolidatedList = new ArrayList<>();
public AttendanceAdapter(Context context, List<ListItem>
consolidatedList) {
this.consolidatedList = consolidatedList;
this.mContext = context;
}
#Override
public RecyclerView.ViewHolder
onCreateViewHolder(ViewGroup parent, int viewType) {
RecyclerView.ViewHolder viewHolder = null;
LayoutInflater inflater =
LayoutInflater.from(parent.getContext());
switch (viewType) {
case ListItem.TYPE_GENERAL:
View v1 =
inflater.inflate(R.layout.attendance_adapter_layout, parent,
false);
viewHolder = new GeneralViewHolder(v1);
break;
case ListItem.TYPE_DATE:
View v2 =
inflater.inflate(R.layout.attn_item_header, parent, false);
viewHolder = new DateViewHolder(v2);
break;
}
return viewHolder;
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder
viewHolder, int position)
{
switch (viewHolder.getItemViewType()) {
case ListItem.TYPE_GENERAL:
GeneralItem generalItem = (GeneralItem)
consolidatedList.get(position);
GeneralViewHolder generalViewHolder=
(GeneralViewHolder) viewHolder;
//generalViewHolder.txt_date.setText(
generalItem.getAttendance_data().getDate());
generalViewHolder.txt_month.setText(
generalItem.getAttendance_data().getMonth_name());
generalViewHolder.txt_date.setText(
generalItem.getAttendance_data().getDate_no());
generalViewHolder.txt_out.setText(
generalItem.getAttendance_data().getAttn_out_time());
generalViewHolder.txt_in.setText(
generalItem.getAttendance_data().getAttn_In_time());
generalViewHolder.txtreason.setText
(generalItem.getAttendance_data().getRemark());
break;
case ListItem.TYPE_DATE:
DateItem dateItem = (DateItem)
consolidatedList.get(position);
DateViewHolder dateViewHolder = (DateViewHolder) viewHolder;
dateViewHolder.txtTitle.setText(dateItem.getDate());
// Populate date item data here
break;
}
}
class DateViewHolder extends RecyclerView.ViewHolder {
protected TextView txtTitle;
public DateViewHolder(View v) {
super(v);
this.txtTitle = (TextView)
v.findViewById(R.id.attn_date);
}
}
// View holder for general row item
class GeneralViewHolder extends RecyclerView.ViewHolder {
protected TextView
txt_in,txtreason,txt_out,txt_date,txt_month;
public GeneralViewHolder(View v) {
super(v);
this.txt_in =v.findViewById(R.id.attn_in_txt);
this.txt_out=v.findViewById(R.id.attn_out_txt);
this.txtreason=v.findViewById(R.id.attn_reason_txt);
this.txt_date=v.findViewById(R.id.date_view);
this.txt_month=v.findViewById(R.id.month_view);
}
}
#Override
public int getItemViewType(int position) {
return consolidatedList.get(position).getType();
}
#Override
public int getItemCount() {
return consolidatedList != null ? consolidatedList.size() : 0;
}
}
MainActivity.Java
public class CurrentMonth extends AsyncTask<Void,Void,Void> {
#Override
protected Void doInBackground(Void... voids) {
attn_list_data_cur_month();
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
updateUi();
}
#Override
protected void onProgressUpdate(Void... values) {
super.onProgressUpdate(values);
}
}
public void attn_list_data_cur_month(){
try {
this.connection=createConnection();
Statement stmt=connection.createStatement();
Calendar current_month_data = Calendar.getInstance();
current_month_data.add(Calendar.MONTH, 0);
//Calendar current_month_date = Calendar.getInstance();
//current_month_date.set(Calendar.DAY_OF_MONTH,0);
n=current_month_data.get(Calendar.DAY_OF_MONTH);
String current_month_year = new SimpleDateFormat("MMM-
yyyy").format(current_month_data.getTime());
String month_name=currentMonth.getText().toString();
for (int i=1;i<=n;i++) {
String date = i + "-" + current_month_year;
ResultSet resultSet = stmt.executeQuery("Select * from
MATTN_MAS where ATTN_DATE='" + date + "' and Username='" +
Username + "'");
String Attn_Type;
if (resultSet.next()) {
while (resultSet.next()) {
Attn_Type = resultSet.getString(8);
String Time = null;
String Reason = resultSet.getString(11);
if (Attn_Type.equals("I")) {
String Attn_Type_In = "I";
String Attn_Type_Out = null;
StringBuilder stringBuilder = new StringBuilder("" + i);
String date_no = stringBuilder.toString();
myOptions.add(new Attendance_Data(Attn_Type_In,
date, Reason, Attn_Type_Out, i, date_no, month_name));
} else {
String Attn_Type_Out = "O";
String Attn_Type_In = null;
StringBuilder stringBuilder = new StringBuilder("" + i);
String date_no = stringBuilder.toString();
myOptions.add(new Attendance_Data(Attn_Type_In,
date, Reason, Attn_Type_Out, i, date_no, month_name));
}
}
} else {
Attn_Type = "Absent";
String Time = null;
String Reason = null;
String out = null;
StringBuilder stringBuilder = new StringBuilder("" + i);
String date_no = stringBuilder.toString();
myOptions.add(new Attendance_Data(Attn_Type, date, Reason,
out, i, date_no, month_name));
}
}
}catch (Exception e){
System.out.println("my Error"+e);
}
}
public void updateUi(){
//sortedData= (List<PojoOfJsonArray>)
PojoOfJsonArray.sortList(myOptions);
HashMap<String, List<Attendance_Data>> groupedHashMap =
groupDataIntoHashMap(myOptions);
for (String date1 : groupedHashMap.keySet()) {
DateItem dateItem = new DateItem();
dateItem.setDate(date1);
consolidatedList.add(dateItem);
for (Attendance_Data pojoOfJsonArray : groupedHashMap.get(date1))
{
GeneralItem generalItem = new GeneralItem();
generalItem.setAttendance_data(pojoOfJsonArray);
consolidatedList.add(generalItem);
}
}
adapter = new AttendanceAdapter(this, consolidatedList);
LinearLayoutManager layoutManager = new LinearLayoutManager(this);
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
attn_report_view.setLayoutManager(layoutManager);
attn_report_view.setAdapter(adapter);
}
private HashMap<String, List<Attendance_Data>>
groupDataIntoHashMap(List<Attendance_Data> listOfPojosOfJsonArray) {
HashMap<String, List<Attendance_Data>> groupedHashMap = new HashMap<>
();
for (Attendance_Data pojoOfJsonArray : listOfPojosOfJsonArray) {
String hashMapKey = pojoOfJsonArray.getDate();
if (groupedHashMap.containsKey(hashMapKey)) {
// The key is already in the HashMap; add the pojo object
// against the existing key.
groupedHashMap.get(hashMapKey).add(pojoOfJsonArray);
} else {
List<Attendance_Data> list = new ArrayList<>();
list.add(pojoOfJsonArray);
groupedHashMap.put(hashMapKey, list);
}
}
return groupedHashMap;
}
I want to add multiple items of same date in same single single card view but instead it is creating multiple Card View for multiple items of same date
You have to use RecyclerView Multiple ViewTypes. for detail please check this example.
Also visit this example.
Yeah I found the solution it worked perfect for Me.....we
have to just make changes to the card View by removing
spaces..
.
like this below...
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
card_view:cardMaxElevation="0.1dp"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:background="#303030"
card_view:cardElevation="5dp"
android:foreground="?android:attr/selectableItemBackground"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_marginLeft="#dimen/dp_2"
android:layout_marginRight="#dimen/dp_2">
<...Your All Text Boxes and further Layout inside this
cardView...>
</android.support.v7.widget.CardView>
and I have add Header for each CardView....and it looks like
this
Outout is shown in below image
I'm developping an application, and now, I don't know what to do next:
I have a list of elements, each element has some informations + an ID + a logo.
What I want to do is creating a list like in the picture
List
Of course, I want it in a single layer, with the logo, some informations, and a button to define an action; where I could use the ID of the selected item.
I did some research, may be I found some relative subjects, but none of what I want.
My list is a
ArrayList<ArrayList<String>>
filled by data from database.
Thank you
Here it is:
public class Avancee extends Activity {
// Log tag
private static final String TAG = MainActivity2.class.getSimpleName();
// Movies json url
private static final String url = "http://blabla.com/movie.json";
private ProgressDialog pDialog;
private List<Movie> movieList = new ArrayList<Movie>();
private ListView listView;
private CustomListAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.list);
adapter = new CustomListAdapter(this, movieList);
listView.setAdapter(adapter);
pDialog = new ProgressDialog(this);
// Showing progress dialog before making http request
pDialog.setMessage("Loading...");
pDialog.show();
// changing action bar color
getActionBar().setBackgroundDrawable(
new ColorDrawable(Color.parseColor("#1b1b1b")));
// Creating volley request obj
JsonArrayRequest movieReq = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
//Log.d(TAG, response.toString());
hidePDialog();
String result = getIntent().getStringExtra("ITEM_EXTRAA");
System.out.println(result);
try{
JSONArray ja = new JSONArray(result);
for (int i = 0; i < ja.length(); i++) {
try {
JSONObject obj = ja.getJSONObject(i);
Movie movie = new Movie();
movie.setTitle(obj.getString("title"));
movie.setLocation(obj.getString("location_search_text"));
movie.setId(obj.getInt("id"));
// adding movie to movies array
movieList.add(movie);
} catch (JSONException e) {
e.printStackTrace();
}
}
}catch(JSONException e){
Log.e("log_tag", "Error parsing data "+e.toString());
}
// notifying list adapter about data changes
// so that it renders the list view with updated data
adapter.notifyDataSetChanged();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
hidePDialog();
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(movieReq);
}
#Override
public void onDestroy() {
super.onDestroy();
hidePDialog();
}
private void hidePDialog() {
if (pDialog != null) {
pDialog.dismiss();
pDialog = null;
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
It's the "id" that I want to get in the OnClick event.
use this code
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
Movie movie= movieList.get(position);
}
});
//here position will give you the id of listview cell so you can use it like
Movie movie= movieList.get(position);
then you can use it get all the data inside your moview object
I've use Filterable inside my RecyclerView. What I wanted to do is, to filter the recyclerview from edittext. Below is my actual code.
public class NavDrawerAdapter_v2 extends RecyclerView.Adapter<NavDrawerAdapter_v2.ViewHolder> implements Filterable{
private static final int TYPE_ITEM = 0;
private ArrayList<String> menu_list;
private ArrayList<String> filtered_menu_list;
Context mContext;
public static class ViewHolder extends RecyclerView.ViewHolder {
int Holderid;
TextView shopName, shopLevel;
public ViewHolder(View itemView,int ViewType) {
super(itemView);
shopName = (TextView) itemView.findViewById(R.id.rowText);
shopLevel = (TextView) itemView.findViewById(R.id.rowLevel);
if(ViewType == TYPE_ITEM) {
Holderid = 0;
}
}
}
public NavDrawerAdapter_v2(Context mContext, ArrayList<String> menu_list){
this.menu_list = menu_list;
this.filtered_menu_list = menu_list;
this.mContext = mContext;
}
#Override
public NavDrawerAdapter_v2.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if (viewType == TYPE_ITEM) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.drawer_item_row,parent,false); //Inflating the layout
return new ViewHolder(v,viewType);
}
return null;
}
#Override
public void onBindViewHolder(NavDrawerAdapter_v2.ViewHolder holder, int position) {
if (holder.Holderid == 0) {
String getShopName = menu_list.get(position).split("-")[0];
String getShopLevel = menu_list.get(position).split("-")[1];
holder.shopName.setText(getShopName);
holder.shopLevel.setText(getShopLevel);
}
}
#Override
public int getItemCount() {
return menu_list == null ? 0 : menu_list.size();
}
#Override
public long getItemId(int position) {
return super.getItemId(position);
}
#Override
public int getItemViewType(int position) {
return TYPE_ITEM;
}
public boolean okay(){
return true;
}
#Override
public Filter getFilter() {
return new UserFilter(this, menu_list);
}
private static class UserFilter extends Filter {
private final NavDrawerAdapter_v2 adapter;
private final ArrayList<String> originalList;
private final ArrayList<String> filteredList;
private UserFilter(NavDrawerAdapter_v2 adapter, ArrayList<String>originalList) {
super();
this.adapter = adapter;
this.originalList = new ArrayList<>(originalList);
this.filteredList = new ArrayList<>();
}
#Override
protected FilterResults performFiltering(CharSequence constraint) {
filteredList.clear();
final FilterResults results = new FilterResults();
if (constraint.length() == 0) {
filteredList.addAll(originalList);
} else {
final String filterPattern = constraint.toString().toLowerCase().trim();
for (String getValue : originalList) {
if (getValue.contains(filterPattern)) {
filteredList.add(getValue);
}
}
}
results.values = filteredList;
results.count = filteredList.size();
return results;
}
#Override
protected void publishResults(CharSequence constraint, FilterResults results) {
adapter.filtered_menu_list.clear();
adapter.filtered_menu_list.addAll((ArrayList<String>) results.values);
adapter.notifyDataSetChanged();
}
}
}
But, in my fragment. I can't call adapter.getFilter(). What is wrong here?
If you want EditText for searchView purposes, you need to add change listener for EditText, as explained in the link : android on Text Change Listener
When the text changed, you should call
adapter.getFilter().filter(newText);
Alternatively, you should try to implement searchview in action bar with recyclerView. Todo this, implement getFilter() method inside your RecyclerView adapter. You can use the getFilter() method implemented in the link https://stackoverflow.com/a/10532898/1308990 .
menu.xml:
<item android:id="#+id/menuSearch"
android:title="search"
android:icon = "#android:drawable/ic_menu_search"
app:actionViewClass = "android.support.v7.widget.SearchView"
app:showAsAction = "always|collapseActionView"></item>
Inside onCreateOptionsMenu() method, write following codes :
MenuItem item = menu.findItem(R.id.menuSearch);
//SearchView searchView = (SearchView) item.getActionView();
SearchView searchView = (SearchView) MenuItemCompat.getActionView(item);
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
//Called when the query text is changed by the user.
#Override
public boolean onQueryTextChange(String newText) {
Log.d("soda in MainActivity","onQueryTextChange method is called.");
mutfagimFragment.adapter.getFilter().filter(newText);
return false;
}
});
When the user changes the text, check whether the onQueryTextChange() method is called by monitoring the logs. If it is not called, try to put the above codes inside onPrepareOptionsMenu() method rather than onCreateOptionsMenu() method.
Following your example, I'm pretty sure you were assigning the object to a RecyclerView.Adapter variable instead of to a NavDrawerAdapter_v2 variable inside the Activity.
RecyclerView.Adapter adapter = new NavDrawerAdapter_v2(menuList);
instead of
NavDrawerAdapter_v2 adapter = new NavDrawerAdapter_v2(menuList);
NavDrawerAdapter_v2 extends from RecyclerView.Adapter but at the same time implements Filterable.
If you assign the object to a RecyclerView.Adapter variable you will still be able to call getItemCount(), onBindViewHolder() and onCreateViewHolder() (since they are abstract methods from RecyclerView.Adapter)
The bad part is that you won't be able to call getFilter() because it belongs to the Filterable interface.