Develop Reference

Update recycler View on a Fragment

I know there is other questions like this with answers but they don't help me...
So I have a Fragment, in this one I use Volley to get a JSON from a Web API. What I want to do is to "refresh" my recycler view with the data I get in my response.
I have tried to add a method in my adapter. But nothing append when I try to change my adapter in my Volley.onresponse() method.
There is my Fragment :
public class TicketsIncidentsFragment extends Fragment implements Response.ErrorListener, Response.Listener<String> {
RequestQueue queue;
StringRequest stringRequest;
ListView listView;
private RecyclerView recyclerView;
private RecyclerView.Adapter mAdapter;
private RecyclerView.LayoutManager layoutManager;
String url;
private TicketsIncidentsViewModel ticketsIncidentsViewModel;
public View onCreateView(#NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
ticketsIncidentsViewModel =
ViewModelProviders.of(this).get(TicketsIncidentsViewModel.class);
View root = inflater.inflate(R.layout.fragment_ticketsincidents, container, false);
return root;
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
RecyclerView recyclerView = (RecyclerView)getView().findViewById(R.id.recyclerview);
recyclerView.setHasFixedSize(true);
layoutManager= new LinearLayoutManager(getActivity().getApplicationContext());
recyclerView.setLayoutManager(layoutManager);
MyAdapterTI myAdapterTI=new MyAdapterTI();
recyclerView.setAdapter(myAdapterTI);
queue = Volley.newRequestQueue(getActivity().getApplicationContext());
url = "http://myip/select/ticketsI";
stringRequest = new StringRequest(GET, url, TicketsIncidentsFragment.this, TicketsIncidentsFragment.this);
queue.add(stringRequest);
}
#Override
public void onErrorResponse(VolleyError error) {
}
#Override
public void onResponse(String response) {
RecyclerView recyclerView = (RecyclerView)getView().findViewById(R.id.recyclerview);
Gson gsonTicketsIncidents = new Gson();
ResponseJson responseJson = new ResponseJson();
responseJson = (ResponseJson) gsonTicketsIncidents.fromJson(response, ResponseJson.class);
List<Object> listTicketsIncidents = responseJson.getResponse();
try {
JSONArray tis = new JSONArray(listTicketsIncidents.toArray());
ArrayList<String> date = new ArrayList<String>();
ArrayList<String> nomUser = new ArrayList<String>();
for (int i = 0 ; i< tis.length(); i++) {
JSONObject ticketIncident = tis.getJSONObject(i);
nomUser.add(ticketIncident.get("NOMUSER").toString());
date.add(ticketIncident.get("DateSAISIE").toString());
}
MyAdapterTI myAdapterTI=new MyAdapterTI();
myAdapterTI.getList(nomUser, date);
recyclerView.setAdapter(myAdapterTI);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
There is my adapter :
public class MyAdapterTI extends RecyclerView.Adapter<MyAdapterTI.MyViewHolder> {
private List<Pair<String, String>> TI;
public void getList(ArrayList<String> nomUser, ArrayList<String> date){
for(int i =0; i<nomUser.size();i++){
TI = Arrays.asList( Pair.create(nomUser.get(i), date.get(i)));
}
}
#NonNull
#Override
public MyAdapterTI.MyViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View view = inflater.inflate(R.layout.list_cell_ti, parent, false);
return new MyViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull MyAdapterTI.MyViewHolder holder, int position) {
Pair<String, String> pair = TI.get(position);
holder.display(pair);
}
#Override
public int getItemCount() {
return 0;
}
public class MyViewHolder extends RecyclerView.ViewHolder{
private TextView nomUser;
private TextView date;
private Pair<String, String> currentPair;
public MyViewHolder(#NonNull View itemView) {
super(itemView);
nomUser=(TextView)itemView.findViewById(R.id.nomuser);
date=(TextView)itemView.findViewById(R.id.date);
itemView.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
}
});
}
public void display(Pair<String, String> pair) {
currentPair=pair;
nomUser.setText(pair.first);
date.setText(pair.second);
}
}
}
And there is the layout :
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="#+id/listview_TI"
android:layout_width="97dp"
android:layout_height="34dp"
android:layout_marginTop="24dp"
android:visibility="invisible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.917"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.976" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerview"
android:layout_width="409dp"
android:layout_height="680dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.039" />
</androidx.constraintlayout.widget.ConstraintLayout>
Thank's for you're help
UPDATE :
Now my MyAdapter.getList() looks like this :
public void getList(ArrayList<String> nomUser, ArrayList<String> date){
for(int i =1; i<nomUser.size();i++){
TI.add(Pair.create(nomUser.get(i), date.get(i)));
}
notifyDataSetChanged();
}
But nothing change yet.
Last UPDATE :
The problem has been solved.
It's a ridiculous mistake I've made in my Adapter.
I used to return 0 but the solution is this :
#Override
public int getItemCount() {
return TI.size();
}

just change
#Override
public int getItemCount() {
return 0;
}
to
#Override
public int getItemCount() {
if(TI == null)
return 0;
else
return TI.size;
}

private List<Pair<String, String>> TI = new ArrayList();
public void getList(ArrayList<String> nomUser, ArrayList<String> date){
for(int i =0; i<nomUser.size();i++){
TI.add(Pair.create(nomUser.get(i), date.get(i)));
}
notifyDataSetChanged();
}

layoutManager= new LinearLayoutManager(getActivity().getApplicationContext());
recyclerView.setLayoutManager(layoutManager);
MyAdapterTI myAdapterTI=new MyAdapterTI(getActivity().getApplicationContext(),ThisIsYourList);
recyclerView.setAdapter(myAdapterTI);
Don't do this in response
MyAdapterTI myAdapterTI=new MyAdapterTI();
recyclerView.setAdapter(myAdapterTI);
myAdapterTI make this global variable
Only update your list and then
myAdapterTI.notifyDataSetChanged();
Or in your adapter, you can do
this.notifyDataSetChanged(); ////in getList

Recycler view dont show values

I'm doing some tests with a project. I am using Volley to consume a Web Service and display the data in a ReciclerView. I get a response but they are not shown in the widget. I have put a Toast to verify that I really have a response from the web service. Something is failing. The list is displayed before you get the data from the web service, Why?
This is my Activity
public class ListMockio extends AppCompatActivity {
private RecyclerView mList;
private LinearLayoutManager linearLayoutManager;
private DividerItemDecoration dividerItemDecoration;
private List<Movie> movieList;
private RecyclerView.Adapter adapter;
private String url = "http://www.mocky.io/v2/5b7af6c73400005f008ed7b2"; // LisT varios
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list_mockio);
mList = (RecyclerView) findViewById(R.id.main_list);
movieList = new ArrayList<>();
adapter = new MovieAdapter(getApplicationContext(),movieList);
linearLayoutManager = new LinearLayoutManager(this);
linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
dividerItemDecoration = new DividerItemDecoration(mList.getContext(), linearLayoutManager.getOrientation());
mList.setHasFixedSize(true);
mList.setLayoutManager(linearLayoutManager);
mList.addItemDecoration(dividerItemDecoration);
mList.setAdapter(adapter);
// Call to web Service
getData();
}
private void getData() {
final ProgressDialog progressDialog = new ProgressDialog(this);
progressDialog.setMessage("Loading...");
progressDialog.show();
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(url, new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
for (int i = 0; i < response.length(); i++)
try {
JSONObject jsonObject = response.getJSONObject(i);
Movie movie = new Movie();
movie.setTitle(jsonObject.getString("title"));
movie.setRating(jsonObject.getInt("rating"));
movie.setYear(jsonObject.getInt("releaseYear"));
Toast.makeText(getApplicationContext(), "Respuesta " + jsonObject.getString("title"), Toast.LENGTH_SHORT).show();
movieList.add(movie);
} catch (JSONException e) {
e.printStackTrace();
progressDialog.dismiss();
}
adapter.notifyDataSetChanged();
progressDialog.dismiss();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e("Volley", error.toString());
progressDialog.dismiss();
}
});
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(jsonArrayRequest);
}
}
Adapter code
public class MovieAdapter extends RecyclerView.Adapter<MovieAdapter.ViewHolder> {
private Context context;
private List<Movie> list;
public MovieAdapter(Context context, List<Movie> list) {
this.context = context;
this.list = list;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(context).inflate(R.layout.single_item, parent, false);
return new ViewHolder(v);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
Movie movie = list.get(position);
holder.textTitle.setText(movie.getTitle());
holder.textRating.setText(String.valueOf(movie.getRating()));
holder.textYear.setText(String.valueOf(movie.getYear()));
}
#Override
public int getItemCount() {
return list.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
public TextView textTitle, textRating, textYear;
public ViewHolder(View itemView) {
super(itemView);
textTitle = (TextView) itemView.findViewById(R.id.main_title);
textRating = (TextView) itemView.findViewById(R.id.main_rating);
textYear = (TextView) itemView.findViewById(R.id.main_year);
}
}
}
single_item.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp">
<TextView
android:id="#+id/main_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Title"
android:textSize="18sp"/>
<TextView
android:id="#+id/main_rating"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Rating"/>
<TextView
android:id="#+id/main_year"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Year"/>
</LinearLayout>
And my ReciclerView activity_list_mockio.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.RecyclerView
android:id="#+id/main_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
</android.support.v7.widget.RecyclerView>
Result

In your declaration, in ListMockio class, change:
private RecyclerView.Adapter adapter;
To:
private MovieAdapter adapter;
Hopefully this should solve your issue.

How to add the load more in my fragment and adapter

I'm trying to add a load more.
I tried to apply what I'd search and it doesn't work.
here's my code.
LatestGradeFragment
public class LatestGradeFragment extends Fragment implements SwipeRefreshLayout.OnRefreshListener{
List<ListGradeData> sectionList;
RecyclerView recyclerView;
SwipeRefreshLayout mSwipeRefreshLayout;
public static LatestGradeFragment newInstance() {
return new LatestGradeFragment();
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_latest_grade, container, false);
//RecyclerView+CardView for section
recyclerView = (RecyclerView) rootView.findViewById(R.id.display_recyclerView);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
sectionList = new ArrayList<>();
mSwipeRefreshLayout = (SwipeRefreshLayout) rootView.findViewById(R.id.swipeRefreshSection);
mSwipeRefreshLayout.setOnRefreshListener(this);
mSwipeRefreshLayout.setColorSchemeResources(R.color.colorPrimary,
android.R.color.holo_green_dark,
android.R.color.holo_orange_dark,
android.R.color.holo_blue_dark);
mSwipeRefreshLayout.post(new Runnable() {
#Override
public void run() {
mSwipeRefreshLayout.setRefreshing(true);
// Fetching data from server
loadSection();
}
});
return rootView;
}
#Override
public void onRefresh() {
loadSection();
}
private void loadSection() {
mSwipeRefreshLayout.setRefreshing(true);
StringRequest stringRequest = new StringRequest(Request.Method.GET, Constants.USER_GRADE,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
//converting the string to json array object
JSONArray array = new JSONArray(response);
if(sectionList!=null) {
sectionList.clear();
}
//traversing through all the object
for (int i = 0; i < array.length(); i++) {
//getting product object from json array
JSONObject sections = array.getJSONObject(i);
//adding the product to product list
sectionList.add(new ListGradeData(
sections.getInt("id"),
sections.getString("section"),
sections.getString("level"),
sections.getString("schoolyear")
));
}
//creating adapter object and setting it to recyclerview
LatestGradeAdapter adapter = new LatestGradeAdapter(getActivity(), sectionList);
recyclerView.setAdapter(adapter);
} catch (JSONException e) {
e.printStackTrace();
}
// Stopping swipe refresh
mSwipeRefreshLayout.setRefreshing(false);
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
// Stopping swipe refresh
mSwipeRefreshLayout.setRefreshing(false);
}
});
//adding our stringrequest to queue
Volley.newRequestQueue(getActivity().getApplicationContext()).add(stringRequest);
}
#Override
public String toString() {
return "LatestGradeFragment";
}
}`
and here's my LatestGradeAdapter:
public class LatestGradeAdapter extends RecyclerView.Adapter<LatestGradeAdapter.RecyclerViewHolder> {
private Context mCtx;
private List<ListGradeData> sectionList;
`public LatestGradeAdapter(Context mCtx, List<ListGradeData> sectionList) {
this.mCtx = mCtx;
this.sectionList = sectionList;
}
#NonNull
#Override
public RecyclerViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(mCtx);
View view = inflater.inflate(R.layout.section_data_list, parent, false);
return new LatestGradeAdapter.RecyclerViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull RecyclerViewHolder holder, int position) {
final ListGradeData sections = sectionList.get(position);
//BIND DATA
holder.textViewSection.setText(sections.getSection());
holder.textViewLevel.setText(sections.getLevel());
holder.textViewSchoolYear.setText(sections.getSchoolyear());
}
#Override
public int getItemCount() {
return sectionList.size();
}
public class RecyclerViewHolder extends RecyclerView.ViewHolder {
//Variables for list
TextView textViewSection, textViewLevel, textViewSchoolYear;
//Variables for head section
TextView textHeaderSection, textHeaderLevel, textHeaderSchoolYear;
public RecyclerViewHolder(final View itemView) {
super(itemView);
textViewSection = (TextView) itemView.findViewById(R.id.textSection);
textViewLevel = (TextView) itemView.findViewById(R.id.textLevel);
textViewSchoolYear = (TextView) itemView.findViewById(R.id.textYear);
}
}
}`

Add this code in your LatestGradeFragment.class
recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
#Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
int lastVisiblePosition = layoutManager.findLastVisibleItemPosition();
if (lastVisiblePosition == recyclerView.getChildCount()) {
progrssBar.setVisibility(View.VISIBLE);
loadMore(); //This methos is used for load next set of items.
}
}
});
public void loadMore(){
//load next set of items to adapter
adapter.notifyDataSetChanged();
progrssBar.setVisibility(View.GONE);
}
Create your fragment_latest_grade like this:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#id/progressBar" />
<ProgressBar
android:id="#+id/progressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerInParent="true"
android:visibility="gone" />
</RelativeLayout>

Android volley recyclerview not showing data

I spent a lot of time debugging this code but unfortunately could not find the bug, can someone help me find the issue in this code. I am not able to see data on the activity page. Although I have found the I am getting response data from the server.
Activity Class
public class SelectServiceActivity extends AppCompatActivity {
private TextView textView;
private RecyclerView recyclerView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_select_service);
recyclerView = (RecyclerView) findViewById(R.id.select_service_rv);
String serviceTypeId = getIntent().getStringExtra(AppConstants.SELECTED_SERVICE_TYPE_ID);
getProductDetailsByProductId(serviceTypeId);
}
private void getProductDetailsByProductId(String serviceTypeId) {
final List<SelectServiceBean> selectServiceList = new ArrayList<>();
final JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(
Request.Method.GET,
APIEndpoints.SERVICE_LIST_URI + serviceTypeId,
null,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
if (response.length() > 0) {
for (int i = 0; i < response.length(); i++) {
try {
selectServiceList.add(DatabaseObjectsMapper.selectServiceBeanMapper((JSONObject) response.get(i)));
} catch (JSONException e) {
Toast.makeText(SelectServiceActivity.this, "Something went wrong : " + e.getMessage(), Toast.LENGTH_LONG).show();
}
}
recyclerView.setAdapter(new SelectServiceAdapter(getApplicationContext(),selectServiceList));
} else {
Toast.makeText(SelectServiceActivity.this, "No Response From Server!", Toast.LENGTH_LONG).show();
}
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(SelectServiceActivity.this, error.toString(), Toast.LENGTH_LONG).show();
}
});
VolleySingleton.getInstance(SelectServiceActivity.this).addToRequestQueue(jsonArrayRequest);
}
}
Adapter Class
public class SelectServiceAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private Context context;
private List<SelectServiceBean> selectServiceList;
public SelectServiceAdapter(final Context context, final List<SelectServiceBean> selectServiceList) {
this.context = context;
this.selectServiceList = selectServiceList;
}
#Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View row = LayoutInflater.from(context).inflate(R.layout.item_select_service, parent, false);
return (new Item(row));
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
((Item) holder).serviceTypeIssue.setText(selectServiceList.get(position).getServiceTypeIssue());
((Item) holder).serviceTypeIssue.setText(selectServiceList.get(position).getServiceType());
}
#Override
public int getItemCount() {
return selectServiceList.size();
}
public static class Item extends RecyclerView.ViewHolder {
private TextView serviceTypeIssue;
private TextView serviceType;
public Item(View view) {
super(view);
serviceTypeIssue = view.findViewById(R.id.service_type_issue);
}
}
}
Single View Item
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<android.support.v7.widget.AppCompatTextView
android:id="#+id/service_type_issue"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:text="Sample text" />
<android.support.v7.widget.AppCompatCheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true" />
</RelativeLayout>
<View
android:layout_width="match_parent"
android:layout_height="1sp"
android:background="#color/lightGrey" />
</LinearLayout>
Recyclerview File
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="#+id/select_service_rv"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>

From docs
A LayoutManager must be provided for RecyclerView to function.
You need to add the layoutManager
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_select_service);
recyclerView = (RecyclerView) findViewById(R.id.select_service_rv);
LinearLayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());
//^^^^^^^^^^^
recyclerView.setLayoutManager(mLayoutManager);
//^^^^^^^^^^^^^^^^^^^^
String serviceTypeId = getIntent().getStringExtra(AppConstants.SELECTED_SERVICE_TYPE_ID);
getProductDetailsByProductId(serviceTypeId);
}
Improvement :
Initialize serviceType in Item class and use it in onBindViewHolder
public Item(View view) {
super(view);
serviceTypeIssue = view.findViewById(R.id.service_type_issue);
serviceType = view.findViewById(R.id.yourID);
//^^^^^^^
}
Keep a reference to new SelectServiceAdapter so that later you can use notify functions for more optimal performance
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
((Item)holder).serviceTypeIssue.setText(selectServiceList.get(position).getServiceTypeIssue());
((Item)holder).serviceType.setText(String.valueOf(selectServiceList.get(position).getServiceType()));
//^^^^^^^^
}

Android setonclicklistener is not working recycler header

I am developing an app using recycler header. And my recycler having header. The source code recycler header is shown in https://github.com/blipinsk/RecyclerViewHeader.
I want to active the set on click listener in recycler header. when i click the recycler header it shows a toasted message. My code is given below.
I am using in fragment.
HomeFragment.java
public class HomeFragment extends android.support.v4.app.Fragment {
List<GetDataAdapter> GetDataAdapter1;
RecyclerView recyclerView;
RecyclerView.LayoutManager recyclerViewlayoutManager;
RecyclerView.Adapter recyclerViewadapter;
RecyclerViewHeader recyclerHeader;
String GET_JSON_DATA_HTTP_URL;
String JSON_IMAGE_TITLE_NAME = "image_title";
String JSON_IMAGE_URL = "image_url";
String JSON_IMAGE_ID = "id";
String JSON_MRP = "mrp";
String JSON_RATE = "rate";
String JSON_DISCOUNT = "discount";
JsonArrayRequest jsonArrayRequest ;
RequestQueue requestQueue ;
public HomeFragment() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home, container, false);
((AppCompatActivity)getActivity()).getSupportActionBar().setTitle("Home");
GET_JSON_DATA_HTTP_URL = Util.URL_SERVER + "categories.php";
GetDataAdapter1 = new ArrayList<>();
recyclerView = (RecyclerView) rootView.findViewById(R.id.recyclerview3);
recyclerView.setHasFixedSize(true);
recyclerViewlayoutManager = new LinearLayoutManager(getContext());
recyclerView.setLayoutManager(recyclerViewlayoutManager);
recyclerHeader = (RecyclerViewHeader) rootView.findViewById(R.id.header);
recyclerHeader.attachTo(recyclerView);
recyclerHeader.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("LOG", "clicked");
}
});
JSON_DATA_WEB_CALL();
// Inflate the layout for this fragment
return rootView;
}
public void JSON_DATA_WEB_CALL(){
final ProgressDialog progressDialog = new ProgressDialog(getContext(), R.style.AppTheme_Dark_Dialog);
progressDialog.setIndeterminate(true);
progressDialog.setMessage("Loading");
progressDialog.show();
jsonArrayRequest = new JsonArrayRequest(GET_JSON_DATA_HTTP_URL,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
progressDialog.dismiss();
Log.d("LOGTAG", "Response :"+response);
JSON_PARSE_DATA_AFTER_WEBCALL(response);
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
requestQueue = Volley.newRequestQueue(getContext());
requestQueue.add(jsonArrayRequest);
}
public void JSON_PARSE_DATA_AFTER_WEBCALL(JSONArray array){
for(int i = 0; i<array.length(); i++) {
GetDataAdapter GetDataAdapter2 = new GetDataAdapter();
JSONObject json = null;
try {
json = array.getJSONObject(i);
GetDataAdapter2.setImageTitleName(json.getString(JSON_IMAGE_TITLE_NAME));
GetDataAdapter2.setImageServerUrl(json.getString(JSON_IMAGE_URL));
GetDataAdapter2.setImageId(json.getString(JSON_IMAGE_ID));
GetDataAdapter2.setMrp(json.getString(JSON_MRP));
GetDataAdapter2.setDiscount(json.getString(JSON_DISCOUNT));
//Log.d("LOGTAG", "JSON_MRP : "+json.getString(JSON_MRP)+"JSON_RATE : "+json.getString(JSON_RATE)+"JSON_DISCOUNT :"+json.getString(JSON_DISCOUNT));
} catch (JSONException e) {
e.printStackTrace();
}
GetDataAdapter1.add(GetDataAdapter2);
}
recyclerViewadapter = new RecyclerViewAdapter(GetDataAdapter1, getContext());
recyclerView.setAdapter(recyclerViewadapter);
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
#Override
public void onDetach() {
super.onDetach();
}
}
RecyclerViewAdapter
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {
static String categoryId;
Context context;
List<GetDataAdapter> getDataAdapter;
ImageLoader imageLoader1;
private final View.OnClickListener mOnClickListener = new MyOnClickListener();
public RecyclerViewAdapter(List<GetDataAdapter> getDataAdapter, Context context){
super();
this.getDataAdapter = getDataAdapter;
this.context = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.subcategory_items, parent, false);
v.setOnClickListener(mOnClickListener);
ViewHolder viewHolder = new ViewHolder(v);
return viewHolder;
}
#Override
public void onBindViewHolder(ViewHolder Viewholder, int position) {
GetDataAdapter getDataAdapter1 = getDataAdapter.get(position);
Viewholder.ImageTitleNameView.setText(getDataAdapter1.getImageTitleName());
Viewholder.Mrp.setText(getDataAdapter1.getMrp());
Viewholder.Discount.setText(getDataAdapter1.getDiscount());
categoryId = getDataAdapter1.getImageTitleName();
imageLoader1 = ServerImageParseAdapter.getInstance(context).getImageLoader();
imageLoader1.get(getDataAdapter1.getImageServerUrl(),
ImageLoader.getImageListener(
Viewholder.networkImageView,//Server Image
R.mipmap.ic_launcher,//Before loading server image the default showing image.
android.R.drawable.ic_dialog_alert //Error image if requested image dose not found on server.
)
);
Viewholder.networkImageView.setImageUrl(getDataAdapter1.getImageServerUrl(), imageLoader1);
}
#Override
public int getItemCount() {
return getDataAdapter.size();
}
class ViewHolder extends RecyclerView.ViewHolder{
public TextView ImageTitleNameView;
public TextView imageid;
public NetworkImageView networkImageView ;
public CardView cardView ;
public TextView Mrp;
public TextView Rate;
public TextView Discount;
public ViewHolder(final View itemView) {
super(itemView);
ImageTitleNameView = (TextView) itemView.findViewById(R.id.textView_item) ;
networkImageView = (NetworkImageView) itemView.findViewById(R.id.VollyNetworkImageView1);
cardView = (CardView) itemView.findViewById(R.id.cardview1);
Mrp = (TextView) itemView.findViewById(R.id.textViewMrp) ;
Rate = (TextView) itemView.findViewById(R.id.textViewRate) ;
Discount = (TextView) itemView.findViewById(R.id.textViewDiscount) ;
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int pos = getAdapterPosition();
Log.d("LOGTAG", "position : "+pos);
Log.d("LOGTAG", "position : "+getDataAdapter.get(pos).getImageId());
ProductFragment fragobj=new ProductFragment();
Bundle bundle=new Bundle();
bundle.putString("subcategory_Product_ID", getDataAdapter.get(pos).getImageId());
fragobj.setArguments(bundle);
switchFragment(R.id.container_body, fragobj); //replace container ID
}
});
}
}
public void switchFragment(int id, Fragment fragment) {
if (context == null)
return;
//MainActivity is your activity where FriendsFragment is called
if (context instanceof HomeActivity) {
HomeActivity homeActivity = (HomeActivity) context;
homeActivity.loadFragment(id, fragment);
}
}
private class MyOnClickListener implements View.OnClickListener {
#Override
public void onClick(View v) {
GetDataAdapter getDataAdapter = new GetDataAdapter();
}
}
}
fragment_sample.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="#dimen/title_padding"
android:paddingRight="#dimen/title_padding">
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|top"/>
<com.bartoszlipinski.recyclerviewheader2.RecyclerViewHeader
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="#dimen/header_height"
android:layout_gravity="center_horizontal|top"
android:layout_margin="#dimen/recycler_divider_width"
android:background="#drawable/rounded_background_header">
<Button
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
android:background="?selectableItemBackgroundBorderless"
android:fontFamily="sans-serif-light"
android:textAllCaps="false"
android:text="#string/header"
android:textColor="#color/clouds"
android:textSize="20sp"/>
</com.bartoszlipinski.recyclerviewheader2.RecyclerViewHeader>
</FrameLayout>
layout_item
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/layout"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="#dimen/recycler_divider_width"
android:background="#drawable/round_background_green">
<TextView
android:layout_width="wrap_content"
android:layout_height="80dp"
android:layout_gravity="center"
android:gravity="center"
android:fontFamily="sans-serif-light"
android:text="#string/item"
android:textSize="16sp"
android:textColor="#color/clouds" />
</FrameLayout>

You're setting your OnClickListener on the RecyclerViewHeader, when I believe you want to set it on the button you have inside your RecyclerViewHeader.
Add an android:id to the Button in your RecyclerViewHeader
<Button
android:id="#+id/button_header"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
android:background="?selectableItemBackgroundBorderless"
android:fontFamily="sans-serif-light"
android:textAllCaps="false"
android:text="#string/header"
android:textColor="#color/clouds"
android:textSize="20sp"/>
Find this Button in your HomeFragment
recyclerHeader = (RecyclerViewHeader) rootView.findViewById(R.id.header);
recyclerHeader.attachTo(recyclerView);
Button headerButton = (Button) recyclerHeader.findViewById(R.id.button_header);
Set OnClickListener on the headerButton instead of the RecyclerViewHeader
headerButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("LOG", "clicked");
}
});

I think the reason why onClickListener don't work for RecyclerViewHeader because inside RecyclerViewHeader you have a Button.
This button will display above RecyclerViewHeader have width/height match RecyclerViewHeader.
So you will never be able to click on RecyclerViewHeader, just able to click on Button
If you still want to handle onClickListener on RecyclerViewHeader, you need set the size of Button smaller then you can click RecyclerViewHeader