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How to flow Data from One RecyclerView to Another RecyclerView when an item in first RecyclerView is clicked?

Hi, I faced an issue here.. I was creating a chatbot in which user can type a text to send it and also can select a text out of the recommended texts
so I created two RecycleViews
My goal is - when the user selects one of the recommended text, then that text should appear in the Chatting RecycleView
here is my main Activity Class
public class Charts extends AppCompatActivity {
private static final String USER_KEY = "user";
private static final String BOT_KEY = "bot";
RecyclerView chart_recycle,auto_texts;
EditText message_text;
ImageView send_btn,mic_button;
ImageView setting_button;
ChartsAdapter chartsAdapter;
RecyclerView.LayoutManager linearLayout;
ArrayList<ChartModeClass> modeClassesArrayList = new ArrayList<>();
AutoAdapter autoAdapter;
RecyclerView.LayoutManager horizontal;
List<Texts> list = new ArrayList();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chatting_hole);
message_text = findViewById(R.id.message_text);
send_btn = findViewById(R.id.send_btn);
mic_button = findViewById(R.id.mic_btn);
setting_button = findViewById(R.id.setting_button);
chart_recycle = findViewById(R.id.chart_recycle);
chart_recycle.setHasFixedSize(true);
auto_texts = findViewById(R.id.auto_texts);
auto_texts.setHasFixedSize(true);
linearLayout = new LinearLayoutManager(getApplicationContext(), RecyclerView.VERTICAL, false);
chart_recycle.setLayoutManager(linearLayout);
//Auto text
horizontal = new LinearLayoutManager(getApplicationContext(),RecyclerView.HORIZONTAL, false);
auto_texts.setLayoutManager(horizontal);
chartsAdapter = new ChartsAdapter(modeClassesArrayList, Charts.this);
chart_recycle.setAdapter(chartsAdapter);
//Auto texts
autoAdapter = new AutoAdapter(getApplicationContext(),list);
auto_texts.setAdapter(autoAdapter);
addInputs();
BottomSheetDialog bottomSheetDialog = new BottomSheetDialog(Charts.this);
mic_button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
bottomSheetDialog.setContentView(R.layout.record);
bottomSheetDialog.show();
}
});
message_text.addTextChangedListener(new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
if (charSequence.toString().trim().length()==0){
mic_button.setVisibility(View.VISIBLE);
send_btn.setVisibility(View.GONE);
}else {
send_btn.setVisibility(View.VISIBLE);
mic_button.setVisibility(View.GONE);
}
}
#Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
if (charSequence.toString().trim().isEmpty()){
// Toast.makeText(getApplicationContext(),"Enter text",Toast.LENGTH_LONG).show();
mic_button.setVisibility(View.VISIBLE);
send_btn.setVisibility(View.GONE);
}else {
send_btn.setVisibility(View.VISIBLE);
mic_button.setVisibility(View.GONE);
}
}
#Override
public void afterTextChanged(Editable editable) {
if (editable.toString().length()==0){
mic_button.setVisibility(View.VISIBLE);
send_btn.setVisibility(View.GONE);
}
}
});
send_btn.setOnClickListener(view -> {
if (message_text.getText().toString().isEmpty()) {
Toast.makeText(Charts.this, "Please enter text..", Toast.LENGTH_SHORT).show();
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
returnResponse(message_text.getText().toString());
}
message_text.setText("");
});
}
#SuppressLint("NotifyDataSetChanged")
private void returnResponse(String message) {
modeClassesArrayList.add(new ChartModeClass(message, USER_KEY));
chartsAdapter.notifyDataSetChanged();
chart_recycle.scrollToPosition(modeClassesArrayList.size()-1);
String url = "http://xxxxxxxxxxxxxxxx"+message;
String BASE_URL = "https://xxxxxxxxx";
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
RetrofitApi retrofitApi = retrofit.create(RetrofitApi.class);
Call<MessageModeClass> call = retrofitApi.getMessage(url);
call.enqueue(new Callback<MessageModeClass>() {
#Override
public void onResponse(#NonNull Call<MessageModeClass> call, #NonNull Response<MessageModeClass> response) {
if (response.isSuccessful()) {
MessageModeClass messageModeClass = response.body();
if (messageModeClass != null) {
modeClassesArrayList.add(new ChartModeClass(messageModeClass.getCnt(), BOT_KEY));
}
chartsAdapter.notifyDataSetChanged();
chart_recycle.scrollToPosition(modeClassesArrayList.size() - 1);
} else {
Toast.makeText(Charts.this, "response is null", Toast.LENGTH_SHORT).show();
}
}
#Override
public void onFailure(#NonNull Call<MessageModeClass> call, #NonNull Throwable t) {
modeClassesArrayList.add(new ChartModeClass("No response check your network connection!", BOT_KEY));
chartsAdapter.notifyDataSetChanged();
chart_recycle.scrollToPosition(modeClassesArrayList.size() - 1);
}
});
}
#SuppressLint("NotifyDataSetChanged")
#Override
protected void onStart() {
super.onStart();
String lang = getIntent().getExtras().getString("lang");
if (lang.equals("english")){
modeClassesArrayList.add(new ChartModeClass("Hey welcome back am fema bot", BOT_KEY));
chartsAdapter.notifyDataSetChanged();
chart_recycle.scrollToPosition(modeClassesArrayList.size() - 1);
}else if (lang.equals("swahili")){
modeClassesArrayList.add(new ChartModeClass("Habari karibu miminni bot niliyetengenezw", BOT_KEY));
chartsAdapter.notifyDataSetChanged();
chart_recycle.scrollToPosition(modeClassesArrayList.size() - 1);
}else {
modeClassesArrayList.add(new ChartModeClass("Hey welcome back am fema bot", BOT_KEY));
chartsAdapter.notifyDataSetChanged();
chart_recycle.scrollToPosition(modeClassesArrayList.size() - 1);
}
}
private void addInputs() {
Texts text1 = new Texts("gender?");
Texts text2 = new Texts("gender equality");
Texts text3 = new Texts("what is good about females");
Texts text4 = new Texts("un goals");
Texts text5 = new Texts("about men");
list.addAll(Arrays.asList(new Texts[]{text1,text2,text3,text4,text5}));
}
}
here is my Adapter class class codes
public class AutoAdapter extends RecyclerView.Adapter<AutoAdapter.ViewHolderClass> {
Context context;
List<Texts> list;
public AutoAdapter(Context context, List<Texts> list) {
this.context = context;
this.list = list;
}
#NonNull
#Override
public ViewHolderClass onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.text_list,parent,false);
ViewHolderClass viewHolderClass = new ViewHolderClass(view);
return viewHolderClass;
}
#Override
public void onBindViewHolder(#NonNull ViewHolderClass holder, #SuppressLint("RecyclerView") int position) {
holder.input_text.setText(list.get(position).getText());
holder.input_text.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// my stack
}
});
}
#Override
public int getItemCount() {
return list.size();
}
public class ViewHolderClass extends RecyclerView.ViewHolder {
TextView input_text;
public ViewHolderClass(#NonNull View itemView) {
super(itemView);
input_text = itemView.findViewById(R.id.input_text);
}
}
}

You can add a list of your recommendations in another RecyclerView
Then in the ViewHolder of each item of the RecyclerView add Callback to listen on click events when a user clicks one of the item like the following
public class ViewHolderClass extends RecyclerView.ViewHolder {
private TextView input_text;
private final Callback callback; // custom callback
public ViewHolderClass(#NonNull View itemView, Callback callback) {
super(itemView);
this.callback = callback;
input_text = itemView.findViewById(R.id.input_text);
// now add onClickListener of the itemView to fire custom callback
itemView.setOnClickListener(view -> {
this.callback.onItemClick(getAdapterPosition());
});
}
// this is my custom callback for return click event
public interface Callback {
void onItemClick(int position);
}
}
Now inside your adapter add the callback from viewholder
public class AutoAdapter extends RecyclerView.Adapter<AutoAdapter.ViewHolderClass> {
private Context context;
private List<Texts> list;
private AutoAdapterCallback callback;
public AutoAdapter(Context context, List<Texts> list) {
this.context = context;
this.list = list;
}
public setCallback(AutoAdapterCallback callback) {
this.callback = callback;
}
#NonNull
#Override
public ViewHolderClass onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.text_list,parent,false);
ViewHolderClass viewHolderClass = new ViewHolderClass(view, new ViewHolderClass.Callback() {
#Override
public void onItemClick(int position) {
// forward callback to adapter callback
if (callback != null) {
// get actual item from its position
final Texts texts = getItemByPosition(position);
// send to adapter callback
callback.onItemClick(texts);
}
});
return viewHolderClass;
}
#Override
public void onBindViewHolder(#NonNull ViewHolderClass holder, #SuppressLint("RecyclerView") int position) {
holder.input_text.setText(list.get(position).getText());
// I haven't used this inteady I added callback on viewholder side
// holder.input_text.setOnClickListener(new View.OnClickListener() {
// #Override
// public void onClick(View view) {
// // my stack
// }
// });
}
#Override
public int getItemCount() {
return list.size();
}
// return Texts object by given position
public Texts getItemByPosition(int position) {
return this.list.get(position);
}
// add adapter callback to be called by viewholder
public interface AdapterCallback {
void onItemClick(Texts texts);
}
}
After that, now on your Activity you can easily listen on any item when a user clicks and get its corresponding Texts object from list as following:
//code ...
// here
//Auto texts
autoAdapter = new AutoAdapter(getApplicationContext(),list);
//set callback to listen for click events
autoAdapter.setCallback(new AutoAdapter.AutoAdapterCallback() {
#Override
public void onItemClick(Texts texts) {
// you can get your clicked item here
// now you can put texts object to another RecyclerView :)
}
});
auto_texts.setAdapter(autoAdapter);
//code ...

Cannot cast onItem clicklistener inside Fragment Class form Adapter Class

I have an Fragment with recycleview where I populate it with json items from internet.
It load fine and Next step I want to is open new Activity when any row is clicked. It works in activity, thus I modified the same code for fragment but for fragment it throws exception in line
mExampleAdapter.setOnItemClickListener(getActivity());
with errror setOnItemClickListener of refrence adatper cannot be applied to Fragment activty and thus when I change line to
(ExampleAdapter.OnItemClickListener)
and when i build and run . Then app crashes with error that Mainactivity which holds framgnet cannot be cast in to .ExampleAdapter$OnItemClickListener
Here is my whole Fragment class
public class Mynotes extends Fragment implements ExampleAdapter.OnItemClickListener{
public static final String YTD_LINK = "link";
private RecyclerView mRecyclerView;
private ExampleAdapter mExampleAdapter;
private ArrayList<ExampleItem> mExampleList;
private RequestQueue mRequestQueue;
String url="https://api.myjson.com/bins/16mecx";
public Mynotes() {
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.activity_jsonfeed, container, false);
mRecyclerView = view.findViewById(R.id.recycler_view);
mRecyclerView.setHasFixedSize(true);
mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
mRecyclerView.addItemDecoration(new MyDividerItemDecoration(getActivity(), DividerItemDecoration.VERTICAL, 36));
mExampleList = new ArrayList<>();
mExampleAdapter = new ExampleAdapter(getActivity(), mExampleList);
mRecyclerView.setAdapter(mExampleAdapter);
mExampleAdapter.setOnItemClickListener((ExampleAdapter.OnItemClickListener) getActivity());
parseJSON();
return view;
}
private void parseJSON() {
JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, null,
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
myProgressBar.setVisibility(View.GONE);
try {
JSONArray jsonArray = response.getJSONArray("hits");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject hit = jsonArray.getJSONObject(i);
String videoTitle = hit.getString("title");
String link = hit.getString("link");
mExampleList.add(new ExampleItem(videoTitle, link));
mExampleAdapter.notifyDataSetChanged();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
}
});
mRequestQueue.add(request);
}
#Override
public void onItemClick(int position) {
Intent intent = new Intent(getActivity(), NewActiviyt.class);
ExampleItem clickedItem = mExampleList.get(position);
intent.putExtra(YTD_LINK, clickedItem.getmLink());
startActivity(intent);
}
#Override
public void onRefresh() {
}
}
and my Adapter Class is
public class ExampleAdapter extends RecyclerView.Adapter<ExampleAdapter.ExampleViewHolder> {
private Context mContext;
private ArrayList<ExampleItem> mExampleList;
private OnItemClickListener mListener;
public interface OnItemClickListener {
void onItemClick(int position);
}
public void setOnItemClickListener(OnItemClickListener listener) {
mListener = listener;
}
public ExampleAdapter(Context context, ArrayList<ExampleItem> exampleList) {
mContext = context;
mExampleList = exampleList;
}
#Override
public ExampleViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(mContext).inflate(R.layout.example_item, parent, false);
return new ExampleViewHolder(v);
}
#Override
public void onBindViewHolder(ExampleViewHolder holder, int position) {
ExampleItem currentItem = mExampleList.get(position);
String title = currentItem.getTitle();
// int likeCount = currentItem.getLikeCount();
// String imageUrl = currentItem.getImageUrl();
holder.mTextViewCreator.setText(title);
// holder.mTextViewLikes.setText("Likes: " + likeCount);
// Glide.with(mContext).load(imageUrl).apply(RequestOptions.circleCropTransform()).into(holder.mImageView);
}
#Override
public int getItemCount() {
return mExampleList.size();
}
public class ExampleViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
public TextView mTextViewCreator;
// public TextView mTextViewLikes;
// public ImageView mImageView;
public ExampleViewHolder(View itemView) {
super(itemView);
// mTextViewLikes = itemView.findViewById(R.id.text_view_likes);
// mImageView = itemView.findViewById(R.id.image_view);
mTextViewCreator = itemView.findViewById(R.id.text_title);
}
#Override
public void onClick(View view) {
if (mListener != null) {
int position = getAdapterPosition();
if (position != RecyclerView.NO_POSITION) {
mListener.onItemClick(position);
}
}
}
}
}
Thanks in advance.

replace getActivity with getContext when you work in fragment,
You can read more here
What is different between getContext and getActivity from Fragment in support library?

Your activity should implement ExampleAdapter.OnItemClickListener

Passing data from RecyclerView.Adapter to fragment onClick

I'm trying to figure out how to get data from a clicked item in a RecyclerView to a listview in a Fragment. I can't seem to figure out how to do this, as I can't get my bundle to work.
I've tried various solutions offered here on Stackoverflow, but none of them have worked. I have managed to get the info from the recyclerview, but I am stuck trying to figure out how I can pass it to the fragment. Can someone please help me?
The Adapter class:
public class FoodAdapter extends RecyclerView.Adapter<FoodAdapter.ViewHolder> {
private Context context;
ArrayList<FoodActivity> list;
public FoodAdapter(ArrayList<FoodActivity> list){
this.list = list;
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.listview_item_food, parent, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull final ViewHolder holder, final int position) {
holder.foods.setText(list.get(position).getName());
holder.carbo.setText(list.get(position).getCarbohydrates());
holder.protein.setText(list.get(position).getProtein());
holder.fats.setText(list.get(position).getFats());
//Get items from recyclerview when user clicks them. Then send them to FoodFragment
holder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String foods = list.get(position).getName();
String carbo = list.get(position).getCarbohydrates();
String protein = list.get(position).getProtein();
String fats = list.get(position).getFats();
Toast.makeText(v.getContext(), "test: " + foods, Toast.LENGTH_SHORT).show();
}
});
}
#Override
public int getItemCount() {
return list.size();
}
class ViewHolder extends RecyclerView.ViewHolder {
TextView foods, carbo, fats, protein;
public ViewHolder(View itemView) {
super(itemView);
carbo = itemView.findViewById(R.id.carbo);
protein = itemView.findViewById(R.id.protein);
fats = itemView.findViewById(R.id.fats);
foods = itemView.findViewById(R.id.food);
}
}
}
The Fragment where the data comes from:
public class TrackingFragment extends Fragment {
DatabaseReference databaseReference;
ArrayList<FoodActivity> list;
RecyclerView recyclerView;
SearchView searchView;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_tracking, container, false);
databaseReference = FirebaseDatabase.getInstance().getReference().child("foods");
recyclerView = view.findViewById(R.id.rv);
searchView = view.findViewById(R.id.searchFood);
return view;
}
#Override
public void onStart() {
super.onStart();
if(databaseReference != null){
databaseReference.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
if(dataSnapshot.exists()){
list = new ArrayList<>();
for(DataSnapshot ds : dataSnapshot.getChildren()){
list.add(ds.getValue(FoodActivity.class));
}
FoodAdapter adapter = new FoodAdapter(list);
recyclerView.setAdapter(adapter);
}
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
Toast.makeText(getActivity(), databaseError.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
if(searchView != null){
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return false;
}
#Override
public boolean onQueryTextChange(String newText) {
search(newText);
return true;
}
});
}
}
private void search(String str){
ArrayList<FoodActivity> searchList = new ArrayList<>();
for(FoodActivity object : list){
if(object.getName().toLowerCase().contains(str.toLowerCase())){
searchList.add(object);
}
}
FoodAdapter foodAdapter = new FoodAdapter(searchList);
recyclerView.setAdapter(foodAdapter);
}
}
And the class where it needs to go:
public class FoodFragment extends Fragment {
ImageButton addFood;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_food, container, false);
addFood = view.findViewById(R.id.addFood);
addFood.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
FragmentTransaction fr = getFragmentManager().beginTransaction();
fr.replace(R.id.fragment_container, new TrackingFragment());
fr.addToBackStack(null).commit();
}
});
return view;
}
}

The most simple is to add variables you need to your activity, set their values with onClick() and then retrieve data in other fragment:
in activity:
String foods;
public String getFoods() {
return foods;
}
public void setFoods(String foods) {
this.foods = foods;
}
in adapter:
holder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
((YourActivity)getActivity()).setFoods("Any value");
}
});
in destination fragment:
String foods = ((YourActivity)getActivity()).getFoods();

Add an interface to your adapter as follow
public class FoodAdapter extends RecyclerView.Adapter<FoodAdapter.ViewHolder> {
interface OnClickListener {
void onClick(FoodActivity clickedItem);
}
private OnClickListener mCallback;
private ArrayList<FoodActivity> list;
public FoodAdapter(ArrayList<FoodActivity> list){
this.list = list;
}
public void setOnClickListener(OnClickListener callback) {
mCallback = callback;
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.listview_item_food, parent, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull final ViewHolder holder, final int position) {
holder.foods.setText(list.get(position).getName());
holder.carbo.setText(list.get(position).getCarbohydrates());
holder.protein.setText(list.get(position).getProtein());
holder.fats.setText(list.get(position).getFats());
//Get items from recyclerview when user clicks them. Then send them to FoodFragment
holder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (mCallback != null)
mCallback.onClick(list.get(position));
}
});
}
#Override
public int getItemCount() {
return list.size();
}
class ViewHolder extends RecyclerView.ViewHolder {
TextView foods, carbo, fats, protein;
public ViewHolder(View itemView) {
super(itemView);
carbo = itemView.findViewById(R.id.carbo);
protein = itemView.findViewById(R.id.protein);
fats = itemView.findViewById(R.id.fats);
foods = itemView.findViewById(R.id.food);
}
}
}

Android sometimes is a little complicated, when it involves the full stack:
01 RecyclerView Adapter
/** 01. Some Adapter */
public class SomeAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private WeakReference<Context> mContext;
/** Constructor */
public SomeAdapter(#NonNull Context context) {
this.mContext = new WeakReference<>(context);
}
#NonNull
protected Context getContext() {
return this.mContext.get();
}
/** Call to Activity from within the adapter. */
private void someMethod() {
SomeActivity activity = (SomeActivity) getContext();
synchronized(activity) {activity.showLoginDialog();}
}
}
02 AppCompatActivity
/** 02. Some Activity */
public class SomeActivity extends AppCompatActivity {
#Nullable
private BaseFragment currentFragment = null;
/** Constructor */
public SomeActivity() {}
public void setCurrentFragment(Fragment fragment) {
this.currentFragment = fragment;
}
/** Call to the current Fragment. */
public void someMethod() {
if (currentFragment != null) {
currentFragment.someMethod();
}
}
}
03 Fragment
/** Some Fragment */
public class SomeFragment extends Fragment {
/** Constructor */
public SomeFragment() {}
#Override
public void onAttach(#NonNull Context context) {
super.onAttach(context);
((BaseActivity) context).setCurrentFragment(this);
}
#Override
public void onDetach() {
super.onDetach();
((BaseActivity) getActivity()).setCurrentFragment(this);
}
}

To get your data from FoodAdapter to TrackingFragment, you can add TrackingFragment (or an interface it implements, ideally) as a parameter to the FoodAdapter constructor, then use that instance to forward your ViewHolder clicks to TrackingFragment for handling.
To get your data from TrackingFragment to FoodFragment, use the setTargetFragment/onActivityResult pattern for fragment <-> fragment communication. This answer has an example: https://stackoverflow.com/a/13733914/3238938

RecyclerVIew onItemClickListener Not working

I am working on RecyclerView and try to using on click listener for each item of recyclcerview using Interface
Here is my Activity class:
public class LegacyHomeActivity extends ActivityBaseDrawer {
private List<LegacyVideo> legacyVideoList = null;
private List<Video> videoList = new ArrayList<>();
private RecyclerView mRecyclerView;
private LegacyModeHomeAdapter adapter;
#Override
public void onNetworkStateChanged(boolean connected) {
}
#Override
protected void onCreate(Bundle savedInstanceState) {
isLegacyMode = true;
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_legacy_home);
if (getSupportActionBar() != null) {
setTitle(getString(R.string.footy_legacy_home));
}
ImageView legacy_live_score_imageView = (ImageView) findViewById(R.id.legacy_live_score_imageView);
legacy_live_score_imageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startActivity(new Intent(LegacyHomeActivity.this, LegacyLiveScoreActivity.class));
}
});
ImageView legacy_highlight_imageView = (ImageView) findViewById(R.id.legacy_highlight_imageView);
legacy_highlight_imageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startActivity(new Intent(LegacyHomeActivity.this, LegacyHighlightsActivity.class));
}
});
ImageView legacy_news_imageView = (ImageView) findViewById(R.id.legacy_news_imageView);
legacy_news_imageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startActivity(new Intent(LegacyHomeActivity.this, LegacyNewsActivity.class));
}
});
mRecyclerView = (RecyclerView) findViewById(R.id.legacy_mood_recyclerview);
final LinearLayoutManager layoutManager = new LinearLayoutManager(getApplicationContext(), LinearLayoutManager.VERTICAL, false);
mRecyclerView.setLayoutManager(layoutManager);
adapter = new LegacyModeHomeAdapter(getApplicationContext(), itemClickListener);
mRecyclerView.setAdapter(adapter);
mRecyclerView.setHasFixedSize(true);
swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayout);
swipeRefreshLayout.setColorSchemeResources(R.color.ThemeColor,
R.color.ThemeColor, R.color.ThemeColor);
swipeRefreshLayout
.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
getLegacyVideoList();
}
});
circularProgressView = (CircularProgressView) findViewById(R.id.circularProgressView);
showLoadingProgress();
getLegacyVideoList();
}
LegacyVideoClickListener itemClickListener = new LegacyVideoClickListener() {
#Override
public void onItemClickListener(int position) {
Video video = videoList.get(position);
VideoPlayerUtil.initVideoPLayer(video, LegacyHomeActivity.this);
}
};
private void getLegacyVideoList() {
FootyLightAPI api = new FootyLightAPI(getApplicationContext(), mResponseListener);
api.getLegacyHomeVideoList();
}
private final FootyLightAPI.ResponseListener mResponseListener = new FootyLightAPI.ResponseListener() {
#Override
public void getResponse(int apiId, final String response) {
switch (apiId) {
case R.integer.ApiLegacyVideoList:
Log.e("Legacy ............", "Response:................" + response);
try {
final ObjectMapper mapper = new ObjectMapper();
legacyVideoList = mapper.readValue(response, new TypeReference<List<LegacyVideo>>() {
});
if (legacyVideoList != null && legacyVideoList.size() > 0) {
videoList.clear();
for (LegacyVideo video : legacyVideoList) {
Log.e("Legacy video", "" + video.getTitle());
Video videoItem = new Video();
if (video.getItemType().equalsIgnoreCase("video")) {
videoItem.setTitle(video.getTitle());
videoItem.setLink(video.getLink());
videoItem.setThumb(video.getThumb());
videoItem.setContentType(video.getContentType());
videoItem.setContentUrl(video.getContentUrl());
videoItem.setDmcaLabel(video.getDmcaLabel());
videoItem.setDmcaContent(video.getDmcaContent());
videoItem.setDmcaDisclaimer(video.getDmcaDisclaimer());
videoItem.setDisplayType(video.getDisplayType());
videoList.add(videoItem);
}
}
}
Log.e("VideoList", "........." + videoList.size());
runOnUiThread(new Runnable() {
#Override
public void run() {
showVideoAdapter();
hideLoadingProgress();
}
});
} catch (Exception e) {
}
break;
default:
break;
}
}
#Override
public void getError(int apiId, int errorCode) {
}
#Override
public void getResponse(String trackingStr, int apiId, String response) {
}
#Override
public void getError(String trackingStr, int apiId, int errorCode) {
}
};
public void showVideoAdapter() {
if (adapter != null) {
adapter.setVideos(videoList);
}
}
}
And here is my Adapter Class
public class LegacyModeHomeAdapter extends RecyclerView.Adapter<LegacyModeHomeAdapter.ItemViewHolder> {
private List<Video> videoList;
private Context mContext;
private LegacyVideoClickListener onVideosRVItemClickListener;
private LayoutInflater getLayoutInflater() {
return LayoutInflater.from(mContext);
}
public LegacyModeHomeAdapter(Context mContext, LegacyVideoClickListener onVideosRVItemClickListener) {
this.mContext = mContext;
this.onVideosRVItemClickListener = onVideosRVItemClickListener;
}
public void setVideos(List<Video> videosList) {
this.videoList = videosList;
notifyDataSetChanged();
}
#Override
public ItemViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = getLayoutInflater().inflate(R.layout.layout_legacy_mode_home_video_item, parent, false);
return new ItemViewHolder(view);
}
#Override
public void onBindViewHolder(ItemViewHolder holder, final int position) {
Video video = videoList.get(position);
Picasso.with(mContext).load(video.getThumb()).into(holder.categoryImage);
holder.categoryName.setText(video.getTitle());
holder.title_image_btn.setText(video.getDisplayType());
holder.VideosItemClickListener(position, onVideosRVItemClickListener);
}
#Override
public int getItemCount() {
if (videoList != null) {
return videoList.size();
}
return 0;
}
public class ItemViewHolder extends RecyclerView.ViewHolder {
private TextView categoryName;
private ImageView categoryImage;
private Button title_image_btn;
public ItemViewHolder(View itemView) {
super(itemView);
categoryName = (TextView) itemView.findViewById(R.id.categoryName);
categoryImage = (ImageView) itemView.findViewById(R.id.categoryImage);
title_image_btn = (Button) itemView.findViewById(R.id.title_image_btn);
}
public void VideosItemClickListener(final int position, final LegacyVideoClickListener videosRVItemClickListener) {
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
videosRVItemClickListener.onItemClickListener(position);
}
});
}
}
}
And finally i am using this interface for listener :
public interface LegacyVideoClickListener {
public void onItemClickListener(int position);
}
This procedure working fine all of my other portion of app but not working this case. I don't know where is the problem . Please help me .

You this approach:
#Override
public void onBindViewHolder(final ViewHolder holder, int position) {
final String element = mDataset[position];
holder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//your code
}
});
}

Pass onVideosRVItemClickListener in your ItemViewHolder constructor.
#Override
public ItemViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = getLayoutInflater().inflate(R.layout.layout_legacy_mode_home_video_item, parent, false);
return new ItemViewHolder(view, onVideosRVItemClickListener);
}
#Override
public void onBindViewHolder(ItemViewHolder holder, final int position) {
Video video = videoList.get(position);
Picasso.with(mContext).load(video.getThumb()).into(holder.categoryImage);
holder.categoryName.setText(video.getTitle());
holder.title_image_btn.setText(video.getDisplayType());
}
public class ItemViewHolder extends RecyclerView.ViewHolder {
private TextView categoryName;
private ImageView categoryImage;
private Button title_image_btn;
public ItemViewHolder(View itemView, final LegacyVideoClickListener videosRVItemClickListener) {
super(itemView);
categoryName = (TextView) itemView.findViewById(R.id.categoryName);
categoryImage = (ImageView) itemView.findViewById(R.id.categoryImage);
title_image_btn = (Button) itemView.findViewById(R.id.title_image_btn);
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
videosRVItemClickListener.onItemClickListener(getAdapterPosition());
}
});
}
}

Check this sample
OnCLick can be achived using Custom Interface
interface Listener {
void performOperation(int Position);
}
in Your Adapter
private Listener mListener;
In your Adapter initialize your listner in constructor like this
mListener = (Listener) context;
In your bindViewHolder method
holder.yourView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mListener.performOperation(position);
}
});
Now in your Activity implement that interface like this
public class LegacyHomeActivity extends ActivityBaseDrawer implements listner {
#Override
public void performOperation(int Position) {
//Do whatever you want to do with this position
}
}

Your interface adapter class should be like this
public class LegacyModeHomeAdapter extends RecyclerView.Adapter<LegacyModeHomeAdapter.ItemViewHolder> {
private List<Video> videoList;
private Context mContext;
public static LegacyVideoClickListener onVideosRVItemClickListener;
private LayoutInflater getLayoutInflater() {
return LayoutInflater.from(mContext);
}
public LegacyModeHomeAdapter(Context mContext, LegacyVideoClickListener onVideosRVItemClickListener) {
this.mContext = mContext;
this.onVideosRVItemClickListener = onVideosRVItemClickListener;
}
public void setVideos(List<Video> videosList) {
this.videoList = videosList;
notifyDataSetChanged();
}
#Override
public ItemViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = getLayoutInflater().inflate(R.layout.layout_legacy_mode_home_video_item, parent, false);
return new ItemViewHolder(view);
}
#Override
public void onBindViewHolder(ItemViewHolder holder, final int position) {
Video video = videoList.get(position);
Picasso.with(mContext).load(video.getThumb()).into(holder.categoryImage);
holder.categoryName.setText(video.getTitle());
holder.title_image_btn.setText(video.getDisplayType());
holder.VideosItemClickListener(position, onVideosRVItemClickListener);
}
#Override
public int getItemCount() {
if (videoList != null) {
return videoList.size();
}
return 0;
}
public class ItemViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private TextView categoryName;
private ImageView categoryImage;
private Button title_image_btn;
public ItemViewHolder(View itemView) {
super(itemView);
categoryName = (TextView) itemView.findViewById(R.id.categoryName);
categoryImage = (ImageView) itemView.findViewById(R.id.categoryImage);
title_image_btn = (Button) itemView.findViewById(R.id.title_image_btn);
itemView.setOnClickListener(this);
}
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
onVideosRVItemClickListener.onItemClickListener(getPosition(), v);
}
}
public void setOnItemClickListener(LegacyVideoClickListener clickListener) {
LegacyModeHomeAdapter.onVideosRVItemClickListener = clickListener;
}
public interface LegacyVideoClickListener {
public void onItemClickListener(int position, View v);
}
}
And your adapter usage class should be like this
adapter.setOnItemClickListener(new LegacyModeHomeAdapter.LegacyVideoClickListener() {
#Override
public void onItemClick(int position, View v) {
//Your code
}
});
Using this way of interface settings you can achieve the onclick listener function exactly.
Please let me know if you are having trouble still.

class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public Button btMyButton;
public ViewHolder(View itemView) {
super(itemView);
itemView.setOnClickListener(this);
}
#Override
public void onClick(View v) {
// your implementation. In order to get position you can use `getAdapterPosition()` method
}
}

#Override
public void onBindViewHolder(RecyclerViewAdapter.ItemViewHolder holder, int position) {
holder.name.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
}
});
}
Try like this

Android Recyclerview Update (Example = Gmail Read Change font )

Android recyclerview item click event after update Recyclerview
Image description here
Mail 1 READ
Mail 2 Dont Read
In the item the click event I want to do this to me
How can you help make
public class Mesajlar_Adapter extends RecyclerView.Adapter<Mesajlar_Adapter.ViewHolder>{
private List<Mesajlar> resultModels;
private Context context;
public Mesajlar_Adapter(List<Mesajlar> resultModels, Context context) {
this.resultModels = resultModels;
this.context = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.mesajlar_listview_desing, parent, false);
ViewHolder view_holder = new ViewHolder(v);
return view_holder;
}
public void resetList() {
int size = this.resultModels.size();
if (size > 0) {
for (int i = 0; i < size; i++) {
resultModels.remove(0);
}
this.notifyItemRangeRemoved(0, size);
}
}
public void addItem(Mesajlar item){
this.resultModels.add(item);
this.notifyDataSetChanged();
}
#Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
holder.mesaj_id.setText(resultModels.get(position).getMESAJ_ID());
holder.kullanici_id.setText(resultModels.get(position).getKULLANICI());
holder.gelen_detay.setText(resultModels.get(position).getDETAY());
holder.kategori.setText(resultModels.get(position).getKATEGORI());
holder.konu.setText(resultModels.get(position).getKONU());
holder.tarih.setText(resultModels.get(position).getKAYIT_TARIHI());
String a = resultModels.get(position).getOKUNDU();
holder.okunma.setText(a);
if (a.equals("Hayir")){
holder.kategori.setTextColor(Color.BLACK);
holder.kategori.setTextSize(19);
holder.konu.setTextColor(Color.BLACK);
holder.konu.setTextSize(19);
holder.tarih.setTextColor(Color.BLACK);
}
}
#Override
public int getItemCount() {
return resultModels.size();
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
protected TextView mesaj_id;
protected TextView kullanici_id;
protected TextView gelen_detay;
protected TextView konu;
protected TextView kategori;
protected TextView tarih;
protected CheckBox secim;
protected TextView okunma;
public ViewHolder(View view) {
super(view);
this.okunma =(TextView) view.findViewById(R.id.okunma);
this.mesaj_id = (TextView) view.findViewById(R.id.mesaj_id);
this.kullanici_id = (TextView) view.findViewById(R.id.kullanici_id);
this.gelen_detay = (TextView) view.findViewById(R.id.gelen_detay);
this.konu = (TextView) view.findViewById(R.id.Konu);
this.kategori = (TextView) view.findViewById(R.id.Kategori);
this.tarih = (TextView) view.findViewById(R.id.Tarih);
// this.secim = (CheckBox) view.findViewById(R.id.secim);
view.setOnClickListener(this);
}
#Override
public void onClick(View view) {
Intent i=new Intent(context, Mesaj_Detay_Activity.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
String detay = gelen_detay.getText().toString();
String mesajid = mesaj_id.getText().toString();
String kullaniciid = kullanici_id.getText().toString();
i.putExtra("detay", detay);
i.putExtra("mesaj_id",mesajid);
i.putExtra("kullanici_id",kullaniciid);
context.startActivity(i);
}
}
}

First of all, add this interface for click event
public interface OnRecyclerItemViewClickListener {
void onClicked(int position, Mesajlar jar);
}
Model
public class Mesajlar {
...
boolean isClicked;
public boolean isClicked() {
return icClicked;
}
public void setClicked(boolean isClicked) {
this.isClicked = isClicked;
}
...
}
Adapter
private OnRecyclerItemViewClickListener listener;
public Mesajlar_Adapter(List<Mesajlar> resultModels, Context context, OnRecyclerItemViewClickListener listener) {
...
this.listener = listener;
}
...
#Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
if (resultModels.get(position).isClicked()) {
// change pressed background color here!
} else {
// change default background color here!
}
holder.itemView.setOnClickListener(v -> {
listener.onClicked(position, resultModels.get(position));
});
...
}
Activity
When you create RecyclerView Adapter, add OnRecyclerItemViewClickListener to constructor of adapter in Activity
Mesajlar_Adapter adapter = new Mesajlar_Adapter(list, context, new OnRecyclerItemViewClickListener {
#Override
public void onClicked(int position, Mesajlar jar) {
jar.setClicked(true);
adapter.notifyItemChanged(position);
Intent i = new Intent(YourActivity.this, Mesaj_Detay_Activity.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.putExtra("detay", jar.getDETAY());
i.putExtra("mesaj_id",jar.getMESAJ_ID());
i.putExtra("kullanici_id", jar.getKULLANICI());
startActivity(i);
}
});

Instead of handling click event in adapter level you can use interface and do it in activity level. Pass the adapter position to the activity, from activity you can do the actual process
see the sample http://wiki.workassis.com/android-recyclerview-example/