Develop Reference

Dynamic Tabs with dynamic data in viewpager fragment

I need a help. I am developing dynamic tabs with dynamic data in viewpager fragment's list. Somehow i got the dynamic tabs and hit API in placeholder fragment to get the recyclerview list.
there are two issue. 1. design is overlapping the tabs and 2. its loading 3rd id data first.
here is the code.
here is main class
public class NewsFeed extends Fragment {
private static RecyclerView listView;
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
private TabLayout tabLayout;
private ViewPager viewPager;
private RecyclerView recyclerView;
private ApiInterface apiInterface;
private List<BlogCatData> list = new ArrayList<BlogCatData>();
private BlogCatListAdaptor adapter;
private String item;
private ArrayList<BlogCatData> dataModelList = new ArrayList<BlogCatData>();
private ArrayList<String> CatTitleList = new ArrayList<>();
private static ArrayList<String> CatIdList = new ArrayList<>();
private View view1;
private View v;
// private ArrayAdapter<BlogCatData> adapter;
public NewsFeed() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
v = inflater.inflate(R.layout.fragment_news_feed, container, false);
getAllBlogCat();
return v;
}
private void setViewIDs() {
tabLayout = v.findViewById(R.id.tabs);
viewPager = v.findViewById(R.id.container);
setUpViewPager(viewPager);
tabLayout.setupWithViewPager(viewPager);
}
private void getAllBlogCat() {
// avi.show();
apiInterface = APIClient.getClient().create(ApiInterface.class);
Call<BlogCatModel> call = apiInterface.GETBlogCategory();
call.enqueue(new Callback<BlogCatModel>() {
#Override
public void onResponse(Call<BlogCatModel> call, retrofit2.Response<BlogCatModel> response) {
if (response.isSuccessful()) {
CatIdList.clear();
list = response.body().getDATA();
for (int i = 0; i < list.size(); i++) {
CatTitleList.add(list.get(i).getTITLE());
CatIdList.add(list.get(i).getID());
}
Log.v("CatTitle", CatTitleList.toString());
Log.v("CatId", CatIdList.toString());
setViewIDs();
// adapter.setPostList(list)
} else {
try {
JSONObject jObjError = new JSONObject(response.errorBody().string());
Toast.makeText(getApplicationContext(), jObjError.getString("message"), Toast.LENGTH_LONG).show();
} catch (Exception e) {
Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG).show();
}
}
}
#Override
public void onFailure(Call<BlogCatModel> call, Throwable t) {
Toast.makeText(getApplicationContext(), t.toString(), Toast.LENGTH_SHORT).show();
call.cancel();
}
});
}
private void setUpViewPager(ViewPager viewPager) {
SectionsPagerAdapter sectionsPagerAdapter = new SectionsPagerAdapter(getFragmentManager());
for (int i = 0; i < CatTitleList.size(); i++) {
Bundle bundle = new Bundle();
bundle.putString("id", CatIdList.get(i));
PlaceholderFragment categoryList = new PlaceholderFragment();
categoryList.setArguments(bundle);
sectionsPagerAdapter.addFragment(categoryList, CatTitleList.get(i));
}
sectionsPagerAdapter.notifyDataSetChanged();
viewPager.setAdapter(sectionsPagerAdapter);
}
public static class PlaceholderFragment extends Fragment {
private final static String TAG = PlaceholderFragment.class.getSimpleName();
private static String item;
private static ArrayList<String> dataModelList = new ArrayList<String>();
// private ArrayAdapter<Model> adapter;
private RecyclerView listView;
private List<BlogData> dataList = new ArrayList<>();
private BlogListAdaptor blogListAdaptor;
private static String id;
public PlaceholderFragment() {
}
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
id = CatIdList.get(sectionNumber);
Bundle args = new Bundle();
args.putString("ID", id);
fragment.setArguments(args);
return fragment;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment__newsfeed_placeholder, container, false);
listView = view.findViewById(R.id.recycler_view);
getBlog(Id);
setBlog();
return view;
}
private void getBlog(String id) {
ApiInterface apiInterface = APIClient.getClient().create(ApiInterface.class);
Call<BlogModel> call = apiInterface.getNewsByCategory(id);
call.enqueue(new Callback<BlogModel>() {
#Override
public void onResponse(Call<BlogModel> call, retrofit2.Response<BlogModel> response) {
if (response.isSuccessful()) {
dataList = response.body().getDATA();
blogListAdaptor.setPostList(dataList);
} else {
try {
JSONObject jObjError = new JSONObject(response.errorBody().string());
Toast.makeText(getApplicationContext(), jObjError.getString("message"), Toast.LENGTH_LONG).show();
} catch (Exception e) {
Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG).show();
}
}
}
#Override
public void onFailure(Call<BlogModel> call, Throwable t) {
Toast.makeText(getApplicationContext(), t.toString(), Toast.LENGTH_SHORT).show();
call.cancel();
}
});
}
private void setBlog() {
blogListAdaptor = new BlogListAdaptor(getActivity(), dataList);
listView.setAdapter(blogListAdaptor);
listView.setHasFixedSize(true);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity());
listView.setLayoutManager(linearLayoutManager);
}
}
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
return PlaceholderFragment.newInstance(position + 0);
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public int getCount() {
return mFragmentTitleList.size();
}
#Override
public CharSequence getPageTitle(int position) {
switch (position) {
}
return mFragmentTitleList.get(position);
}
#Override
public int getItemPosition(Object object) {
return super.getItemPosition(object);
}
}
}
and here is the adapter class for recyclerview
public class BlogListAdaptor extends RecyclerView.Adapter<BlogListAdaptor.MyViewHlder> {
private Activity activity;
private List<BlogData> list;
private boolean valid;
private EditText name, email, phone, date, noOfGuest, msg;
private Spinner partyMode, timeSlot;
private AlertDialog alertDialog;
final Calendar myCalendar = Calendar.getInstance();
private String PartyModeStr, TimeSlotStr;
private String Id;
private String title;
public BlogListAdaptor(Activity activity, List<BlogData> list) {
this.activity = activity;
this.list = list;
}
public void setPostList(List<BlogData> dataList) {
list = dataList;
notifyDataSetChanged();
}
#NonNull
#Override
public MyViewHlder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.blog_list_layout, viewGroup, false);
MyViewHlder my = new MyViewHlder(view);
return my;
}
#Override
public void onBindViewHolder(#NonNull MyViewHlder myViewHlder, int i) {
myViewHlder.Title.setText(list.get(i).getTITLE());
myViewHlder.Author.setText(list.get(i).getAUTHOR());
if (list.get(i).getIMGSRC() != null)
Glide.with(activity).load(Constant.ImgRoot + list.get(i).getIMGSRC())
.into(myViewHlder.Image);
myViewHlder.cardview.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(activity, DetailActivity.class);
intent.putExtra("Id", list.get(i).getID());
intent.putExtra("Title", list.get(i).getTITLE());
intent.putExtra("Author", list.get(i).getAUTHOR());
intent.putExtra("Content", list.get(i).getCONTENT());
activity.startActivity(intent);
}
});
}
#Override
public int getItemCount() {
return list.size();
}
class MyViewHlder extends RecyclerView.ViewHolder {
private TextView Title, Author;
private ImageView Image;
private CardView cardview;
public MyViewHlder(#NonNull View itemView) {
super(itemView);
Image = itemView.findViewById(R.id.image);
Title = itemView.findViewById(R.id.title);
Author = itemView.findViewById(R.id.author);
cardview = itemView.findViewById(R.id.cardview);
}
}
}
Please help me out, to call api...
fragment_newsfeed_placeholder
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
fragment_news_feed
<com.google.android.material.tabs.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
app:tabGravity="center"
app:tabMode="scrollable"
app:tabTextColor="#ffffff" />
<androidx.viewpager.widget.ViewPager
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/tabs" />

Getting the values of ListView selected item

I have this ListView adapter:
public class UpicksAdapter extends BaseAdapter
{
Context context;
List<Upick> upick_list;
public UpicksAdapter(List<Upick> listValue, Context context)
{
this.context = context;
this.upick_list = listValue;
}
#Override
public int getCount()
{
return this.upick_list.size();
}
#Override
public Object getItem(int position)
{
return this.upick_list.get(position);
}
#Override
public long getItemId(int position)
{
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent)
{
ViewItem viewItem = null;
if(convertView == null)
{
viewItem = new ViewItem();
LayoutInflater layoutInfiater = (LayoutInflater)this.context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
convertView = layoutInfiater.inflate(R.layout.listview_items, null);
viewItem.SubNameTextView = (TextView)convertView.findViewById(R.id.SubjectNameTextView);
viewItem.SubFullFormTextView = (TextView)convertView.findViewById(R.id.SubjectFullFormTextView);
convertView.setTag(viewItem);
}
else
{
viewItem = (ViewItem) convertView.getTag();
}
viewItem.SubNameTextView.setText(upick_list.get(position).Subject_Name);
viewItem.SubFullFormTextView.setText(upick_list.get(position).Subject_Full_Form);
return convertView;
}
}
class ViewItem
{
TextView SubNameTextView;
TextView SubFullFormTextView;
}
The ListView is in a fragment.
I need to get data from the listview selected item. I have this listener:
UpicksListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
String item = UpicksListView.getItemAtPosition(position).toString();
Log.d("VALOR","VALOR "+item);
}
});
How can I get the values of the selected item?
EDIT:
Complete Fragment code:
public class MisUpicksFragment extends Fragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
private SessionManager session;
private ProgressDialog loading;
private EditText txtbusqueda;
private Button botonbuscar,botonrefrescar;
//movies
private static final String TAG = MainActivity.class.getSimpleName();
public List<Upick> upicks;
private RecyclerView recyclerView;
private GridLayoutManager gridLayout;
private UpicksAdapter adapter;
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private String user_id;
private Button btnNew;
ListView UpicksListView;
ProgressBar progressBar;
String HttpURL = "http://***/upicks_todos.php";
private OnFragmentInteractionListener mListener;
public MisUpicksFragment() {
// Required empty public constructor
}
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* #param param1 Parameter 1.
* #param param2 Parameter 2.
* #return A new instance of fragment MensajesFragment.
*/
// TODO: Rename and change types and number of parameters
public static MisUpicksFragment newInstance(String param1, String param2) {
MisUpicksFragment fragment = new MisUpicksFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_misupicks, container, false);
UpicksListView = (ListView) view.findViewById(R.id.UpicksListView);
progressBar = (ProgressBar) view.findViewById(R.id.ProgressBar1);
new ParseJSonDataClass(getActivity()).execute();
UpicksListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
String item = UpicksListView.getItemAtPosition(position).toString();
Log.d("VALOR","VALOR "+item);
}
});
return view;
}
private class ParseJSonDataClass extends AsyncTask<Void, Void, Void> {
public Context context;
String FinalJSonResult;
List<Upick> upickFullFormList;
public ParseJSonDataClass(Context context) {
this.context = context;
}
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected Void doInBackground(Void... arg0) {
HttpServiceClass httpServiceClass = new HttpServiceClass(HttpURL);
try {
httpServiceClass.ExecutePostRequest();
if (httpServiceClass.getResponseCode() == 200) {
FinalJSonResult = httpServiceClass.getResponse();
if (FinalJSonResult != null) {
JSONArray jsonArray = null;
try {
jsonArray = new JSONArray(FinalJSonResult);
JSONObject jsonObject;
Upick upick;
upickFullFormList = new ArrayList<Upick>();
for (int i = 0; i < jsonArray.length(); i++) {
upick = new Upick();
jsonObject = jsonArray.getJSONObject(i);
upick.Subject_Name = jsonObject.getString("id_servicio");
upick.Subject_Full_Form = jsonObject.getString("cliente_servicio");
upickFullFormList.add(upick);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} else {
Toast.makeText(context, httpServiceClass.getErrorMessage(), Toast.LENGTH_SHORT).show();
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void result)
{
progressBar.setVisibility(View.GONE);
UpicksListView.setVisibility(View.VISIBLE);
if (upickFullFormList != null) {
UpicksAdapter adapter = new UpicksAdapter(upickFullFormList, context);
UpicksListView.setAdapter(adapter);
}
}
}
private void logoutUser() {
session.setLogin(false);
// Launching the login activity
Intent intent = new Intent(getActivity(), LoginActivity.class);
startActivity(intent);
//finish();
}
#Override
public void onDetach() {
super.onDetach();
mListener = null;
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
}

Change this code to setters.
upick.Subject_Name = jsonObject.getString("id_servicio");
upick.Subject_Full_Form = jsonObject.getString("cliente_servicio");
eg:
upick.setSubjectname(jsonObject.getString("id_servicio"));
Then inside onclick you can take values using getters
String item = upicks.get(position).getSubjectname();
parent.getItemAtPosition(position) will return an Object (the model used in your adapter).To get some field from your Object don't call Object.toString(); it will return the object reference not the value that you're looking for. Use Object.yourField; instead.

The ArrayList.get() method is used to get the element of a specified
position within the list.
String str_ITEM= upicks.get(position).yourGETMETHOD();

in your callback listener you have adapter object just use that like below.
UpicksListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
String item = parent.getSelectedItem().toString();
Log.d("VALOR","VALOR "+item);
}
});

Using searchview in actionbar in fragments

I am displaying a userlist and I am using serachview in my actionbar to search. When I am using the searchView in activity, it works fine but when I use it for fragment, searchview doesn't work. It does not search in the listview.
Below is my code.
UserListFragment.java
public class UsersListFragment extends Fragment {
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
Activity activity;
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private static final String TAG = "UsersListFragment";
private OnFragmentInteractionListener mListener;
private ListView listView;
private List<UserData> users;
private CustomAdapter adapter;
SharedPreferences.Editor preferenceEditor;
Timer myTimer;
View view;
ActionBar actionBar;
private static final String PREFRENCES_NAME = "setPreferences";
private ProgressDialog progressBar;
String partnerKeyValue;
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* #param param1 Parameter 1.
* #param param2 Parameter 2.
* #return A new instance of fragment UsersListFragment.
*/
// TODO: Rename and change types and number of parameters
public static UsersListFragment newInstance(String param1, String param2) {
UsersListFragment fragment = new UsersListFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
progressBar = new ProgressDialog(getActivity());
progressBar.setCancelable(false);
progressBar.setMessage("Loading...");
progressBar.setProgressStyle(ProgressDialog.STYLE_SPINNER);
progressBar.setProgress(0);
Log.i(TAG, "UsersListFragment onCreate");
users = new ArrayList<>();
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
SharedPreferences preferenceSettings = getActivity().getSharedPreferences(PREFRENCES_NAME,Context.MODE_PRIVATE);
preferenceEditor = preferenceSettings.edit();
preferenceEditor.putString("refresh","userlistview");
preferenceEditor.commit();
FirebaseUtil uts = new FirebaseUtil(getContext());
uts.startListeningNotification(Global.getInstance().ownerId, new CallBack() {
#Override
public void onCallback(Map<String, Object> response, String Success) {
Log.i(TAG, Success);
setHasOptionsMenu(true);
String partnerKey = (String) response.get("key");
if (partnerKey != null) {
Map<String, Object> typeCheck = (Map<String, Object>) response.get("value");
String type = (String) typeCheck.get("type");
if (type.equals("chat")) {
String key1 = Global.getInstance().ownerId;
String key2 = partnerKey;
partnerKeyValue = partnerKey;
if (key2 != null) {
String currentPartner = Global.getInstance().partnerId;
if (currentPartner.length() > 0) {
if (currentPartner.equals(partnerKey)) {
} else {
Global.getInstance().unreadMessageUsers.add(partnerKey);
}
Global.getInstance().unreadMessageUsers.add(partnerKey);
} else {
}
}
}
}
}
});
}
#Override
public void onStart() {
super.onStart();
Log.i(TAG, "UsersListFragment onStart");
}
#Override
public void onResume() {
super.onResume();
Log.i(TAG, "UsersListFragment onResume");
}
#Override
public void onPause() {
super.onPause();
Log.i(TAG, "UsersListFragment onStart");
}
#Override
public void onStop() {
super.onStop();
Log.i(TAG, "UsersListFragment onStop");
}
#Override
public void onDestroyView() {
super.onDestroyView();
}
#Override
public void onDestroy() {
super.onDestroy();
FirebaseUtil util = new FirebaseUtil(getContext());
util.updateUserStatus(Global.getInstance().ownerId, "4");
Log.i(TAG, "UsersListFragment onDestroy");
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
actionBar = ((AppCompatActivity) getActivity()).getSupportActionBar();
if(actionBar!=null) {
actionBar.setDisplayUseLogoEnabled(true);
actionBar.setDisplayShowHomeEnabled(true);
actionBar.setDisplayHomeAsUpEnabled(false);
actionBar.setLogo(R.drawable.ic_logo);
ColorDrawable colorDrawable = new ColorDrawable(Color.parseColor("#006EAD"));
actionBar.setBackgroundDrawable(colorDrawable);
}
Toast.makeText(getActivity(), String.valueOf( Global.getInstance().unreadMessageUsers.size()) , Toast.LENGTH_SHORT).show();
int vd = users.size();
view = inflater.inflate(R.layout.fragment_userslist, container, false);
listView = (ListView) view.findViewById(R.id.userdisplay);
adapter = new CustomAdapter(getActivity(),R.layout.program_list, users );
listView.setAdapter(adapter);
if (users.size()==0){
usersList();
}else {
adapter.notifyDataSetChanged();
}
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
UserData data = users.get(position);
Global.getInstance().someData = data.getId();
Global.getInstance().partnerId = data.getId();
int i = 0;
for (Iterator<String> iter = Global.getInstance().unreadMessageUsers.iterator(); iter.hasNext(); ) {
String element = iter.next();
if (element.equals(data.getId().toString())) {
iter.remove();
}
}
data.setUnreadMessageCount(0);
users.remove(position);
users.add(position, data);
Toast.makeText(getActivity().getApplicationContext(),String.valueOf(Global.getInstance().unreadMessageUsers.size()),Toast.LENGTH_LONG).show();
Fragment fragmentOne = new ChatFragment();
android.support.v4.app.FragmentTransaction ft = getActivity().getSupportFragmentManager().beginTransaction();
Bundle args = new Bundle();
args.putString(ChatFragment.DATA_RECEIVE, data.getName());
fragmentOne .setArguments(args);
ft.addToBackStack(null);
ft.replace(R.id.framecontainerMain, fragmentOne).commit();
}
});
// Inflate the layout for this fragment
return view;
}
public void usersList () {
SharedPreferences preferenceSettings = getActivity().getSharedPreferences(PREFRENCES_NAME,Context.MODE_PRIVATE);
preferenceEditor = preferenceSettings.edit();
//get the data from userlist api
final String URL = "url";
String token = preferenceSettings.getString("authToken","");
final String userId = preferenceSettings.getString("userId","");
HashMap<String, String> params = new HashMap<String, String>();
params.put("user_id",userId);
params.put("auth_token",token);
progressBar.show();
JsonObjectRequest myRequest = new JsonObjectRequest(Request.Method.POST, URL,new JSONObject(params),
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.i(TAG, "onResponse:" +response);
String success = null;
try {
success = response.getString("success");
} catch (JSONException e) {
e.printStackTrace();
}
if(success == "true") {
JSONArray Array = null;
try {
//get the users
} else {
users.add(data);
}
}
Log.i(TAG, "arraylist");
adapter.notifyDataSetChanged();
onlineUsers();
myTimer = new Timer();
myTimer.schedule(new TimerTask() {
#Override
public void run() {
TimerMethod();
}
}, 0, 5000);
progressBar.dismiss();
} catch (JSONException e) {
e.printStackTrace();
}
JSONObject Obj;
} else {
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
progressBar.dismiss();
VolleyLog.e("Error: ", error.getMessage());
Log.i(TAG, "onErrorResponse:" +error.networkResponse);
}
});
ApplicationController.getInstance().addToRequestQueue(myRequest);
myRequest.setRetryPolicy(new DefaultRetryPolicy(
5000,
DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
}
public void sortingArray(){
if (users.size()>0) {
synchronized (this) {
if (Global.getInstance().unreadMessageUsers.size() > 0) {
System.out.println("\nExample 3 - Count all with Map");
Map<String, Integer> map = new HashMap<String, Integer>();
for (String temp : Global.getInstance().unreadMessageUsers) {
Integer count = map.get(temp);
map.put(temp, (count == null) ? 1 : count + 1);
}
System.out.println("\nSorted Map");
Map<String, Integer> unreadCount = new TreeMap<String, Integer>(map);
for (String key : unreadCount.keySet()) {
int count_unread = unreadCount.get(key);
int i = 0;
for (UserData obj : users) {
UserData user = obj;
if (user.getId().equals(key)) {
user.setUnreadMessageCount(count_unread);
users.remove(i);
users.add(i, user);
break;
}
i++;
}
}
}
synchronized (this) {
if (Global.getInstance().userStatus.size() > 0) {
try {
for (Object dict : Global.getInstance().userStatus) {
Map<String, Object> val = (Map<String, Object>) dict;
String key = val.keySet().iterator().next();
val.get(key).toString().trim();
int statusValue;
if (val.get(key).toString().equals("")) {
statusValue = 4;
} else {
statusValue = Integer.valueOf(val.get(key).toString());
}
int i = 0;
for (UserData obj : users) {
UserData user = obj;
if (user.getId().equals(key)) {
user.setOnlineStatus(statusValue);
users.remove(i);
users.add(i, user);
break;
}
i++;
}
}
}catch (ConcurrentModificationException e){
e.printStackTrace();
}
}
}
Log.i(TAG, users.get(0).getName());
if (users.size() > 0) {
Collections.sort(users, new Comparator<UserData>() {
#Override
public int compare(UserData o1, UserData o2) {
if (o1.getOnlineStatus() > o2.getOnlineStatus()) {
return 1;
} else if (o1.getOnlineStatus() < o2.getOnlineStatus()) {
return -1;
} else {
return 0;
}
}
});
}
if (users.size() > 0) {
Collections.sort(users, new Comparator<UserData>() {
#Override
public int compare(UserData o1, UserData o2) {
if (o1.getUnreadMessageCount() > o2.getUnreadMessageCount()) {
return -1;
} else if (o1.getUnreadMessageCount() < o2.getUnreadMessageCount()) {
return 1;
} else {
return 0;
}
}
});
Global.getInstance().userStatus.clear();
getActivity().runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getActivity().getApplicationContext(), "any mesage", Toast.LENGTH_LONG).show();
adapter.notifyDataSetChanged();
}
});
}
}
}
}
public void TimerMethod() {
synchronized(this) {
SharedPreferences preferenceSettings = getActivity().getSharedPreferences("setPreferences", Context.MODE_PRIVATE);
String checkView = preferenceSettings.getString("refresh", "");
if (checkView.equals("userlistview")) {
if (Global.getInstance().userStatus.size() > 0) {
sortingArray();
}
} else {
preferenceEditor = preferenceSettings.edit();
preferenceEditor.putString("refresh", "userlistview");
preferenceEditor.commit();
if (Global.getInstance().unreadMessageUsers.size() > 0){
sortingArray();
}
}
}
}
public void onlineUsers (){
String value;
for (UserData data : users) {
value = data.getId();
FirebaseUtil online = new FirebaseUtil(getContext());
online.onlineUsers(value, new CallBack() {
#Override
public void onCallback(Map<String, Object> response, String Success) {
if (response == null) {
} else {
Global.getInstance().userStatus.add(response);
}
}
});
}
}
#Override
public void onCreateOptionsMenu(Menu menu,MenuInflater inflater) {
inflater.inflate(R.menu.menu_userlist,menu);
MenuItem item = menu.findItem(R.id.menuSearch);
SearchView searchView = (SearchView)item.getActionView();
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return false;
}
#Override
public boolean onQueryTextChange(String newText) {
adapter.getFilter().filter(newText);
return false;
}
});
super.onCreateOptionsMenu(menu,inflater);
}
private void logoutUser(){
Intent I = new Intent(getActivity(), LoginActivity.class);
startActivity(I);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menuSearch :
return true;
case R.id.menuLogout :
logoutUser();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
if (mListener != null) {
String val = "'";
mListener.onFragmentInteraction(val);
}
}
public void initlizeval(Context context) {
mListener = (OnFragmentInteractionListener) context;
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof OnFragmentInteractionListener) {
mListener = (OnFragmentInteractionListener) context;
} else {
throw new RuntimeException(context.toString()
+ " must implement OnFragmentInteractionListener");
}
}
#Override
public void onDetach() {
super.onDetach();
myTimer.cancel();
mListener = null;
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(String val);
}
}
menu_userlist.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item android:id="#+id/menuSearch"
android:title="#string/search"
android:icon="#drawable/ic_search"
app:actionViewClass="android.widget.SearchView"
app:showAsAction="always">
</item>
<item android:id="#+id/menuLogout"
android:title="#string/logout"
android:icon="#drawable/ic_logout"
android:tint="#android:color/white"
app:showAsAction="always">
</item>
</menu>
CustomAdapter.java
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.List;
public class CustomAdapter extends ArrayAdapter<UserData> {
private Activity activity;
private List<UserData> messages;
public CustomAdapter(Activity context, int resource, List<UserData> objects) {
super(context, resource, objects);
this.activity = context;
this.messages = objects;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
packagename.CustomAdapter.ViewHolder holder;
LayoutInflater inflater = (LayoutInflater) activity.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
int layoutResource = 0; // determined by view type
UserData data = getItem(position);
int viewType = getItemViewType(position);
layoutResource = R.layout.program_list;
if (convertView != null) {
holder = (com.your.package.CustomAdapter.ViewHolder) convertView.getTag();
} else {
convertView = inflater.inflate(layoutResource, parent, false);
holder = new com.your.package.CustomAdapter.ViewHolder(convertView);
convertView.setTag(holder);
}
//set message content
holder.msg.setText(data.getName());
holder.id = data.geId();
holder.roleMsg.setText(data.getRole());
return convertView;
}
#Override
public int getViewTypeCount() {
// return the total number of view types. this value should never change
// at runtime
return 2;
}
#Override
public int getItemViewType(int position) {
// return a value between 0 and (getViewTypeCount - 1)
return position % 2;
}
private class ViewHolder {
private TextView msg;
private String id;
private TextView roleMsg;
public ViewHolder(View v) {
msg = (TextView) v.findViewById(R.id.textView1);
roleMsg = (TextView) v.findViewById(R.id.textView2);
}
}
}
HomeActivity.java
public class HomeActivity extends AppCompatActivity implements UsersListFragment.OnFragmentInteractionListener {
private UsersListFragment mItemsFragment;
private ChatFragment mFragmentOne;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
VideoFragment fragmentTwo ;
LinearLayout layout1 = (LinearLayout) findViewById(R.id.framecontainer);
layout1.setVisibility(View.VISIBLE);
LinearLayout layout2 = (LinearLayout) findViewById(R.id.framecontainerTab);
layout2.setVisibility(View.VISIBLE);
mItemsFragment = new UsersListFragment();
mItemsFragment.initlizeval(this);
android.support.v4.app.FragmentTransaction fts = getSupportFragmentManager().beginTransaction();
fts.add(R.id.framecontainer, mItemsFragment).commit();
//Instantiate some stuff here like view components
Fragment fragmentOne = new ChatFragment();
android.support.v4.app.FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.add(R.id.framecontainerTab, fragmentOne).commit();
}else{
LinearLayout layout1 = (LinearLayout) findViewById(R.id.framecontainer);
layout1.setVisibility(View.GONE);
LinearLayout layout2 = (LinearLayout) findViewById(R.id.framecontainerTab);
layout2.setVisibility(View.GONE);
layout2.removeAllViews();
mItemsFragment = new UsersListFragment();
mItemsFragment.initlizeval(this);
setFragment(mItemsFragment);
}
}
public void setFragment(Fragment frag)
{
android.support.v4.app.FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
}
public void attemptLogin1() {
String test = "one";
String tested = "fail";
}
#Override
public void onFragmentInteraction(String uri) {
LinearLayout layout1 = (LinearLayout) findViewById(R.id.framecontainer);
layout1.setVisibility(View.GONE);
LinearLayout layout2 = (LinearLayout)findViewById(R.id.framecontainerTab);
layout2.setVisibility(View.GONE);
findViewById(R.id.framecontainerVideo);
Toast.makeText(getApplicationContext(), "bullet", Toast.LENGTH_SHORT).show();
}
#Override
protected void onPause() {
super.onPause();
}
#Override
protected void onResume() {
super.onResume();
}
#Override
public void onBackPressed() {
super.onBackPressed();
Fragment fragmentOne = new ChatFragment();
LinearLayout layout1 = (LinearLayout) findViewById(R.id.framecontainer);
layout1.setVisibility(View.VISIBLE);
LinearLayout layout2 = (LinearLayout) findViewById(R.id.framecontainerTab);
layout2.setVisibility(View.VISIBLE);
}
#Override
protected void onStart() {
super.onStart();
getDelegate().onStart();
}
}
I have written setHasOptionsMenu(true); in onCreate of UserFragment.java
The logout functionality works fine but the search isn't working.
I have tried various options given on Stackoverflow as well as from other resource, but nothing worked. :(
Any help is appreciated.
Thanks in advance.

Create Constructor in your fragment. Pass Context object inside fragment constructor.which allows your activity as global access.

Remove this line and it will work
case R.id.menuSearch:
return true;

fragment is not updating after i checked the button in the base adapter

hi friends i am new to the android development i am developing an app similar to flipkart. i am using the tab layout where there are 4tabs 1.home 2.menu 3.cart 4.settings
Each tab consists of list view where each one is having fragment in it,when i click the menu button and select an item that i want to order,after ordering it, it is not loading in the cart so i am not able to locate the item in the cart
MenuAdapter.Java
public class Second_adapter extends BaseAdapter {
Context context;
TextView basename, SubItemprice, itemdesc, SubItemdesc;
LayoutInflater inflater;
ImageView order;
private List<JSONParser> items;
String itembasename, itemde, subtmsub, subitempri;
SharedPreferences.Editor loginPrefsEditor;
public Second_adapter(Context context, List<JSONParser> items) {
this.context = context;
this.items = items;
}
#Override
public int getCount() {
return items.size();
}
#Override
public Object getItem(int i) {
return items.get(i);
}
#Override
public long getItemId(int i) {
return i;
}
#Override
public View getView(int i, View view, ViewGroup viewGroup) {
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (view == null)
view = inflater.inflate(R.layout.item_clicked, viewGroup, false);
basename = (TextView) view.findViewById(R.id.basename);
SubItemprice = (TextView) view.findViewById(R.id.SubItemprice);
itemdesc = (TextView) view.findViewById(R.id.itemdesc);
SubItemdesc = (TextView) view.findViewById(R.id.SubItemdesc);
order = (ImageView) view.findViewById(R.id.order);
final JSONParser setdata = items.get(i);
basename.setText(setdata.getBaseName());
itemdesc.setText(setdata.getItemdesc());
SubItemdesc.setText(setdata.getSubItemdesc());
SubItemprice.setText(setdata.getSubItemprice());
order.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
itembasename = setdata.getBaseName();
itemde = setdata.getItemdesc();
subtmsub = setdata.getSubItemdesc();
subitempri = setdata.getSubItemprice();
Session userloggedin=new Session(context);
if (userloggedin.isLoggedIn()){
addcart();
Cart cart=new Cart();
cart.cartdata();
Toast.makeText(context, "LoggedIn" +itembasename+itemde+subtmsub+subitempri, Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(context,"Please Login", Toast.LENGTH_SHORT).show();
}
}
});
return view;
}
private void addcart() {
SharedPreferences customerid=context.getSharedPreferences("loginPrefs",Context.MODE_PRIVATE);
String customid=customerid.getString("customerid","");
String addcarturl = "http://standardtakeaway.co.uk/json/cart_process.php?userid="+customid+"&Item="+itembasename+itemde+subtmsub+"&Itemcount=1&price="+subitempri;
Log.d("Cart",addcarturl);
JsonArrayRequest cartreq=new JsonArrayRequest(Request.Method.POST, addcarturl, (String) null, new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
for (int i=0;i<response.length();i++){
try {
JSONObject cartobj=response.getJSONObject(i);
String count=cartobj.getString("count");
loginPrefsEditor.putString("Badge",count);
loginPrefsEditor.commit();
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(context,""+error, Toast.LENGTH_SHORT).show();
}
});
AppController.getInstance().addToRequestQueue(cartreq);
}
}
Cart.Class
public class Cart extends Fragment {
Button check_out;
TextView subtotal;
ListView cartview;
CartAdapter cartAdapter;
List<JSONParser> cartitems;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View cartfrag = inflater.inflate(R.layout.cart, container, false);
subtotal = (TextView) cartfrag.findViewById(R.id.subtotal);
cartview = (ListView) cartfrag.findViewById(R.id.cartview);
cartitems = new ArrayList<JSONParser>();
cartAdapter = new CartAdapter(getActivity(), cartitems);
cartview.setAdapter(cartAdapter);
check_out = (Button) cartfrag.findViewById(R.id.check_out);
check_out.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent cart_check = new Intent(getActivity(), Check.class);
startActivity(cart_check);
}
});
Session cartlogged=new Session(getActivity());
if (cartlogged.isLoggedIn()){
cartdata();
}else {
Toast.makeText(getActivity(),"Not Logged", Toast.LENGTH_SHORT).show();
}
cartdata();
return cartfrag;
}
void cartdata() {
SharedPreferences customerid=getActivity().getSharedPreferences("loginPrefs", Context.MODE_PRIVATE);
String customid=customerid.getString("customerid","");
String carturl = "http://standardtakeaway.co.uk/json/view_cart.php?userid=" + customid;
Log.d("CartData", carturl);
JsonObjectRequest cartreq = new JsonObjectRequest(Request.Method.GET, carturl, (String) null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
try {
JSONArray objarray = response.getJSONArray("items");
for (int i = 0; i < objarray.length(); i++) {
JSONObject cartdataobj = objarray.getJSONObject(i);
JSONParser parserdata = new JSONParser();
parserdata.setCartquantity(cartdataobj.getString("qty"));
parserdata.setCartbase(cartdataobj.getString("BaseName"));
parserdata.setCartprice(cartdataobj.getString("price"));
cartitems.add(parserdata);
}
JSONObject subobj=response.getJSONObject("details");
String subtext=subobj.getString("subtotal");
subtotal.setText(subtext);
} catch (JSONException e) {
e.printStackTrace();
}
cartAdapter.notifyDataSetChanged();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getActivity(), "" + error, Toast.LENGTH_SHORT).show();
}
});
cartreq.setRetryPolicy(new DefaultRetryPolicy(6000, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
AppController.getInstance().addToRequestQueue(cartreq);
}
public static Cart getInstance(String message) {
Cart cart = new Cart();
Bundle bundle = new Bundle();
bundle.putString("MSG", message);
cart.setArguments(bundle);
return cart;
}
TabLayout.java
public class TabAdapter extends FragmentStatePagerAdapter {
private Context mContext;
private List<Fragment> mFragments = new ArrayList<>();
private List<String> mFragmentTitles = new ArrayList<>();
private List<Integer> mFragmentIcons = new ArrayList<>();
public TabAdapter(Context context, FragmentManager fm) {
super(fm);
this.mContext = context;
}
public void addFragment(Fragment fragment, String title, int drawable) {
mFragments.add(fragment);
mFragmentTitles.add(title);
mFragmentIcons.add(drawable);
}
#Override
public Fragment getItem(int position) {
return mFragments.get(position);
}
#Override
public int getCount() {
return mFragments.size();
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitles.get(position);
}
public View getTabView(int position) {
View tab = LayoutInflater.from(mContext).inflate(R.layout.customtab, null);
TextView tabText = (TextView) tab.findViewById(R.id.tabText);
ImageView tabImage = (ImageView) tab.findViewById(R.id.tabImage);
tabText.setText(mFragmentTitles.get(position));
tabImage.setBackgroundResource(mFragmentIcons.get(position));
if (position == 0) {
tab.setSelected(true);
}
return tab;
}
}
MainActivity.java
public class MainActivity extends BaseActivity implements OnFragmentInteractionListener {
#Bind(R.id.tabpager)
ViewPager mViewpager;
#Bind(R.id.tab_layout)
TabLayout mTabs;
private TabAdapter pageAdapter;
String home,menu,cart,account,more;
#Override
protected int getLayoutResource() {
return R.layout.activity_main;
}
#Override
protected void initVariables(Bundle savedInstanceState) {
home= getString(R.string.home);
menu = getString(R.string.menu);
cart = getString(R.string.cart);
account = getString(R.string.account);
more = getString(R.string.more);
}
#Override
protected void initData(Bundle savedInstanceState) {
setupViewPager(mViewpager);
setupTabLayout(mTabs);
}
public void setupViewPager(ViewPager viewPager) {
pageAdapter = new TabAdapter(getApplicationContext(), getSupportFragmentManager());
pageAdapter.addFragment(MainFragment.getInstance(home), home, R.drawable.home);
pageAdapter.addFragment(MenuItems.getInstance(menu), menu, R.drawable.menu);
pageAdapter.addFragment(Cart.getInstance(cart), cart, R.drawable.cart);
pageAdapter.addFragment(Account.getInstance(account), account, R.drawable.account);
pageAdapter.addFragment(More.getInstance(more), more, R.drawable.more);
viewPager.setAdapter(pageAdapter);
}
public void setupTabLayout(TabLayout tabLayout) {
tabLayout.setTabMode(TabLayout.MODE_FIXED);
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
tabLayout.setupWithViewPager(mViewpager);
mViewpager.setOffscreenPageLimit(4);
for (int i = 0; i < tabLayout.getTabCount(); i++) {
TabLayout.Tab tab = tabLayout.getTabAt(i);
tab.setCustomView(pageAdapter.getTabView(i));
}
tabLayout.requestFocus();
}
#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);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}

You can fix this way by setting setOnPageChangeListener on viewPager:
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int index) {
// TODO Auto-generated method stub
if(index==3){
((Cart) mAdapter.getItem(index)).cartdata();
}
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
#Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
});
Your cartdata() must be public.

How to update fragment's data used in ViewPager? View is not showing the updated data

I know the same question has been asked so many times but I am not able to solve my issue.
I have created an Activity which has a ViewPager which should have 4 Pages.
I am using the same Fragment for all pages. The Fragment has a GridView which should be updated whenever I swipe to the other page.
Following are the classes & XML layouts I have used to create it.
Activity layout activity_discover.xml
<android.support.v4.view.ViewPager
android:id="#+id/activity_discover_view_pager"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dip" >
<android.support.v4.view.PagerTabStrip
android:id="#+id/activity_discover_pager_tab_strip"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:textColor="#color/black"
android:textSize="#dimen/header_text" />
</android.support.v4.view.ViewPager>
</RelativeLayout>
Activity DiscoverActivity.java
public class DiscoverActivity extends FragmentActivity implements OnClickListener, OnPageChangeListener
{
private final static String TAG = "DiscoverActivity";
private UtilDialog utilDialog;
MPagerAdapter adapterViewPager;
PagerTabStrip pagerTabStrip;
ViewPager viewPager;
public ArrayList<String> listCategory;
LMProgressDialog progressDialog;
private RelativeLayout relativeCountry;
private RelativeLayout relativeCity;
private TextView tvCountry;
private TextView tvCity;
private String selectedCategory;
private int selectedCityID = 0;
private int selectedCategoryID = 0;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_discover);
initParameters();
initView();
}
void initParameters()
{
progressDialog = new LMProgressDialog(this);
utilDialog = new UtilDialog(this);
preferences = PreferenceManager.getDefaultSharedPreferences(this);
editor = preferences.edit();
editor.commit();
selectedCategory = getResources().getString(R.string.adventure);
listCategory = new ArrayList<String>();
listCategory.add(getResources().getString(R.string.adventure));
listCategory.add(getResources().getString(R.string.night_life));
listCategory.add(getResources().getString(R.string.life_styles));
listCategory.add(getResources().getString(R.string.events));
}
void initView()
{
viewPager = (ViewPager) findViewById(R.id.activity_discover_view_pager);
viewPager.setOnPageChangeListener(this);
adapterViewPager = new MPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(adapterViewPager);
pagerTabStrip = (PagerTabStrip) findViewById(R.id.activity_discover_pager_tab_strip);
pagerTabStrip.setTabIndicatorColor(getResources().getColor(R.color.white));
}
#Override
protected void onDestroy()
{
super.onDestroy();
}
public class MPagerAdapter extends FragmentPagerAdapter
{
private Map<Integer, String> mFragmentTags;
private FragmentManager mFragmentManager;
public MPagerAdapter(FragmentManager fm)
{
super(fm);
mFragmentManager = fm;
mFragmentTags = new HashMap<Integer, String>();
}
#Override
public int getCount()
{
return 4;
}
#Override
public Fragment getItem(int position)
{
Fragment fragment = Fragment.instantiate(DiscoverActivity.this,
FragmentMediaContent.class.getName(), null);
return fragment;
}
#Override
public Object instantiateItem(ViewGroup container, int position)
{
Object obj = super.instantiateItem(container, position);
if (obj instanceof Fragment)
{
// record the fragment tag here.
Fragment f = (Fragment) obj;
String tag = f.getTag();
mFragmentTags.put(position, tag);
}
return obj;
}
public Fragment getFragment(int position)
{
String tag = mFragmentTags.get(position);
if (tag == null)
return null;
return mFragmentManager.findFragmentByTag(tag);
}
#Override
public CharSequence getPageTitle(int position)
{
return listCategory.get(position).toString().toUpperCase();
}
}
#Override
public void onPageScrollStateChanged(int arg0)
{
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2)
{
}
#Override
public void onPageSelected(int position)
{
selectedCategoryID = position;
selectedCategory = listCategory.get(position);
try
{
JSONObject jsonObject = new JSONObject();
jsonObject.put(Constants.CITY_ID, selectedCityID);
jsonObject.put(Constants.CATEGORY, selectedCategory);
makeJsonObjectRequest(Request.Method.POST, jsonObject, API.URL_LOAD_MEDIA);
} catch (JSONException e)
{
e.printStackTrace();
}
}
void prepareMediaList(JSONArray arrayMedia)
{
int noOfMedia = arrayMedia.length();
ArrayList<MediaType> listMedia = new ArrayList<MediaType>();
for (int i = 0; i < noOfMedia; i++)
{
try
{
JSONObject objectMedia = arrayMedia.getJSONObject(i);
int id = objectMedia.getInt(Constants.ID);
String category = objectMedia.getString(Constants.CATEGORY);
String mediaType = objectMedia.getString(Constants.MEDIA_TYPE);
int cityID = objectMedia.getInt(Constants.CITIES_ID);
String path = objectMedia.getString(Constants.PATH);
String thumbnailPath = objectMedia.getString(Constants.THUMBNAIL_PATH);
String description = objectMedia.getString(Constants.DESCRIPTION);
int userID = objectMedia.getInt(Constants.USERS_ID);
listMedia.add(new MediaType(id, mediaType, path, category, userID, cityID, 0, description, thumbnailPath));
} catch (JSONException e)
{
e.printStackTrace();
}
}
FragmentMediaContent fragment = (FragmentMediaContent) adapterViewPager.getFragment(selectedCategoryID);
Log.i(TAG, "fragment: " + fragment);
fragment.updateData(listMedia, selectedCategory);
}
}
Fragment class FragmentMediaContent.java:
public class FragmentMediaContent extends Fragment
{
private final static String TAG = "FragmentMediaContent";
public static final String FRAGMENT_POSITION = null;
private GridView gridView;
private UtilDialog utilDialog;
private SharedPreferences preferences;
private Editor editor;
private ArrayList<MediaType> listMedia;
MediaAdapter mediaAdapter;
private int cityID;
private String category;
LMProgressDialog progressDialog;
TextView tvTest;
public static FragmentMediaContent newInstance(int num)
{
FragmentMediaContent f = new FragmentMediaContent();
return f;
}
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState)
{
return inflater.inflate(R.layout.fragment_media_content, container, false);
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState)
{
super.onViewCreated(view, savedInstanceState);
initParameters();
initViews();
}
void initParameters()
{
getSize();
listMedia = new ArrayList<MediaType>();
utilDialog = new UtilDialog(getActivity());
progressDialog = new LMProgressDialog(getActivity());
preferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
editor = preferences.edit();
mediaAdapter = new MediaAdapter(getActivity(), listMedia);
}
void initViews()
{
tvTest = (TextView) getActivity().findViewById(R.id.fragment_media_content_tv_test);
tvTest.setText(category+" no of media");
tvTest.setVisibility(View.GONE);
gridView = (GridView) getActivity().findViewById(R.id.fragment_media_content_grid_view);
gridView.setAdapter(mediaAdapter);
}
/**
* MediaAdapter : ArrayAdapter class which prepares view for list of
* MediaType.
*
*/
class MediaAdapter extends ArrayAdapter<MediaType>
{
MediaAdapter(Context context, ArrayList<MediaType> list)
{
super(context, R.layout.cell_media_view, R.id.cell_media_view_tv_test, list);
}
public View getView(int position, View convertView, ViewGroup parent)
{
View row = super.getView(position, convertView, parent);
MediaViewHolder holder = (MediaViewHolder) row.getTag();
if (holder == null)
{
holder = new MediaViewHolder(row);
row.setTag(holder);
}
final MediaType mediaType = getMedia(position, this);
String thumbnailPath = mediaType.getThumbnailPath();
String path = mediaType.getPath();
String type = mediaType.getMediaType();
// imageLoader.get(type.equals(Constants.TYPE_IMAGE) ? path :
// thumbnailPath, ImageLoader.getImageListener(holder.ivMedia,
// R.drawable.logo, R.drawable.ic_launcher));
holder.ivType.setVisibility(type.equals(Constants.TYPE_IMAGE) ? View.GONE : View.VISIBLE);
holder.ivMedia.setLayoutParams(new FrameLayout.LayoutParams(THUMBNAIL_SIZE, THUMBNAIL_SIZE));
Picasso.with(getActivity()).load(type.equals(Constants.TYPE_IMAGE) ? path : thumbnailPath).noFade().centerCrop().resize(THUMBNAIL_SIZE, THUMBNAIL_SIZE).placeholder(R.drawable.loading)
.error(R.drawable.no_image).into(holder.ivMedia);
return row;
}
}
public void updateData(ArrayList<MediaType> listMedia, String category)
{
Log.i(TAG, "Updating data for: " + category);
Log.i(TAG, "No of media items: " + listMedia.size());
// this.listMedia.clear();
// this.listMedia.addAll(listMedia);
// mediaAdapter.notifyDataSetChanged();
mediaAdapter = new MediaAdapter(getActivity(), listMedia);
gridView.setAdapter(mediaAdapter);
tvTest.setText(category + ", No of Media : " + listMedia.size());
}
int THUMBNAIL_SIZE = 200;
/**
* #param position
* #return MediaType object from specified position
*/
private MediaType getMedia(int position, MediaAdapter mediaAdapter)
{
return (MediaType) mediaAdapter.getItem(position);
}
}
Fragment fragment_media_content.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/blue"
android:gravity="center"
android:orientation="vertical" >
<TextView
android:id="#+id/fragment_media_content_tv_test"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="#color/white" />
<GridView
android:id="#+id/fragment_media_content_grid_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:horizontalSpacing="5dip"
android:numColumns="3"
android:verticalSpacing="5dip" />
</LinearLayout>
On page swipe (or it could be any other event) I hit an API which gives me some data that I have to update in the corresponding Fragment.
Whenever I get the data from server I call the prepareMediaList method which calls the updateData method of Fragment. I can see in logs that there is data in list but that data is not shown in the Fragment's GridView (not even in TextView).
I am really not getting what is wrong in this.
Now it has become very frustrating, looks so simple but still couldn't find any solution.
Edit
I just tried with one Fragment only & it is working properly. So there is something which has to do with multiples.
Edit 2
I couldn't find the solution for this so I had to switch to alternate way. I removed the Fragments from ViewPager instead I added static views to it. In my case I added four GridViews to ViewPager. This was simple & bit complex but most important thing is, it is working the way I wanted.
But still I am looking for the answer.

After checking your code more in details i see you do not require to re-initliaze your MediaAdapter inside updateData method.
You simply require to update your updateData as
listMedia.clear();
this.listMedia.addAll(listMedia);
mediaAdapter.notifyDatasetChanged();
This will reload your data in gridview. Change i suggested will refresh the data in your arraylist which is being used for rendering gridview and then you notify your mediaAdapter to reload the list.