Clicked item updates other items in the recyclerview? - java

I have a recycler view which contains a checkbox on click of the check
box I update the value for quantity.The problem is if I select the
first checkbox in my recycler view for some instances even the 5th
check box gets auto checked.
Following is my code for onActivityResult where I call updateBooks which is responsible for handling the click event.
#Override
protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
super.onActivityResult(requestCode, resultCode, data);
mAdapter.notifyDataSetChanged();
search_info.clear();
book_type.clear();
if (requestCode == 1) {
if (resultCode == RESULT_OK) {
getBookData(data);
if (books_list.size() > 0) {
books_list.clear();
mAdapter.swap(prepareData());
mAdapter.notifyDataSetChanged();
}
updateBooks(recyclerView);
mAdapter.notifyDataSetChanged();
}
}
}
Following is the code for updateBooks.
private void updateBooks(RecyclerView recyclerView) {
mAdapter = new DataAdapter(getApplicationContext(), prepareData(), recyclerView, qty, new DataAdapter.OnItemCheckListener() {
#Override
public void onItemCheck(BooksInfo item, DataAdapter.ViewHolder viewHolder) {
if (qty.equals("") || qty.equals(null)) {
viewHolder.tv_qty.setText("0");
} else {
viewHolder.tv_qty.setText(qty);
}
}
#Override
public void onItemUncheck(BooksInfo item, DataAdapter.ViewHolder viewHolder) {
viewHolder.tv_qty.setText("0");
}
});
recyclerView.setAdapter(mAdapter);
}
And this is my Adapter code.
public class DataAdapter extends RecyclerView.Adapter<DataAdapter.ViewHolder> {
private ArrayList<BooksInfo> books;
private Context ctx;
private String qty;
private RecyclerView recyclerView;
public DataAdapter()
{
}
#NonNull
public OnItemCheckListener onItemCheckListener;
public DataAdapter(Context context, ArrayList<BooksInfo> books, RecyclerView recyclerView,String qty, OnItemCheckListener onItemCheckListener) {
this.books = books;
this.ctx = context;
this.qty = qty;
this.onItemCheckListener =onItemCheckListener;
this.recyclerView = recyclerView;
}
public interface OnItemCheckListener {
void onItemCheck(BooksInfo item,ViewHolder viewHolder);
void onItemUncheck(BooksInfo item,ViewHolder viewHolder);
}
public void swap(ArrayList<BooksInfo> datas){
datas = new ArrayList<>();
recyclerView.removeAllViews();
books.clear();
books.addAll(datas);
notifyDataSetChanged();
}
#Override
public DataAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.card_row, viewGroup, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(final DataAdapter.ViewHolder viewHolder, int i) {
final BooksInfo booksInfo = (BooksInfo) books.get(i);
viewHolder.tv_title.setText(booksInfo.getTitle());
viewHolder.tv_price.setText(booksInfo.getPrice());
viewHolder.tv_vol_no.setText(booksInfo.getVol_no());
viewHolder.tv_status.setText(booksInfo.getStatus());
viewHolder.tv_isbn.setText(booksInfo.getISBN());
viewHolder.tv_book_id.setText(booksInfo.getBook_id());
viewHolder.tv_brand.setText(booksInfo.getBrand());
viewHolder.tv_sku.setText(booksInfo.getSku());
viewHolder.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
viewHolder.cb_selection.setChecked(!(viewHolder.cb_selection.isChecked()));
if (viewHolder.cb_selection.isChecked()){
onItemCheckListener.onItemCheck(booksInfo,viewHolder);
// viewHolder.tv_qty.setText(qty);
}else{
onItemCheckListener.onItemUncheck(booksInfo,viewHolder);
// viewHolder.tv_qty.setText("0");
}
}
});
}
public void updateNotes(ArrayList notesList) {
books = notesList;
}
public void updateQty(String q)
{
qty =q;
}
#Override
public int getItemCount() {
return books.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
public TextView tv_title,tv_price,tv_vol_no,tv_status,tv_isbn,tv_book_id,tv_brand,tv_sku,tv_qty;
public CheckBox cb_selection;
View itemView;
public ViewHolder(View itemView) {
super(itemView);
this.itemView = itemView;
tv_title = (TextView)itemView.findViewById(R.id.tv_title);
tv_price = (TextView) itemView.findViewById(R.id.tv_price);
tv_vol_no = (TextView) itemView.findViewById(R.id.tv_volno);
tv_status = (TextView) itemView.findViewById(R.id.tv_status);
tv_isbn = (TextView) itemView.findViewById(R.id.tv_isbn);
tv_book_id = (TextView) itemView.findViewById(R.id.tv_bookid);
tv_brand = (TextView) itemView.findViewById(R.id.tv_brand);
cb_selection = (CheckBox) itemView.findViewById(R.id.cb_selection);
cb_selection.setClickable(false);
tv_sku = (TextView) itemView.findViewById(R.id.tv_sku);
tv_qty = (TextView) itemView.findViewById(R.id.tv_qty);
}
public void setOnClickListener(View.OnClickListener onClickListener) {
itemView.setOnClickListener(onClickListener);
}
}
}


Views in RecyclerView are reusable and you must store checked state outside the view. Add boolean field to your BookInfo class like public boolean isCkecked. And change some code inside onBindViewHolder:
viewHolder.cb_selection.setChecked(booksInfo.isChecked);
viewHolder.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
booksInfo.isChecked = !booksInfo.isChecked;
viewHolder.cb_selection.setChecked(booksInfo.isChecked);
if (booksInfo.isChecked){
onItemCheckListener.onItemCheck(booksInfo,viewHolder);
// viewHolder.tv_qty.setText(qty);
}else{
onItemCheckListener.onItemUncheck(booksInfo,viewHolder);
// viewHolder.tv_qty.setText("0");
}
}
});

Related

On Clicking one button, it Triggers another button in recycle view

I'm currently working on a attandance management Android app. In my recyclerview there are list of student detail being populated dynamically from database. When i click the first button in the list, it also change the button colour of the 11th button of the list Like wise to 2nd button click changes the colour of 12th View button
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {
Context context;`enter code here`
List<StudentDetails> MainImageUploadInfoList;
public RecyclerViewAdapter(Context context, List<StudentDetails> TempList) {
this.MainImageUploadInfoList = TempList;
this.context = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.recyclerview_items, parent, false);
ViewHolder viewHolder = new ViewHolder(view);
return viewHolder;
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
StudentDetails studentDetails = MainImageUploadInfoList.get(position);
holder.StudentNameTextView.setText(studentDetails.getName());
holder.StudentNumberTextView.setText(studentDetails.getPhoneNumber());
holder.st.setText(studentDetails.getRollno());
holder.cardView.setCardBackgroundColor(getcolor(position));
}
private int getcolor(int position) {
return Color.parseColor("#" + Integer.toHexString(ContextCompat.getColor(context, R.color.normal)));
}
#Override
public int getItemCount() {
return MainImageUploadInfoList.size();
}
class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public TextView StudentNameTextView;
public TextView StudentNumberTextView;
public TextView st;
DatabaseReference databaseReference;
String se,wh,su,d;
Button b;
CardView cardView;
public ViewHolder(View itemView) {
super(itemView);
itemView.setOnClickListener(this);
StudentNameTextView = (TextView) itemView.findViewById(R.id.ShowStudentNameTextView);
StudentNumberTextView = (TextView) itemView.findViewById(R.id.ShowStudentNumberTextView);
st = (TextView) itemView.findViewById(R.id.studentrollno);
cardView=itemView.findViewById(R.id.cardview1);
se=Teacher.getInstance().getSe();
wh=Teacher.getInstance().getWh();
su=Teacher.getInstance().getSu();
d=Teacher.getInstance().getD();
b=itemView.findViewById(R.id.button3);
itemView.findViewById(R.id.button3).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(final View view ) {
int position=getAdapterPosition();
String message = String.valueOf(position) ;
databaseReference= FirebaseDatabase.getInstance().getReference("attandance").child(wh).child(se).child(su).child(d).child(message);
databaseReference.setValue("p");
itemView.findViewById(R.id.button3).setBackgroundColor(Color.GREEN);
itemView.findViewById(R.id.button4).setEnabled(false);
itemView.findViewById(R.id.button3).setEnabled(false);
Toast.makeText( context,"position is "+String.valueOf(position), Toast.LENGTH_SHORT).show();
}
});
itemView.findViewById(R.id.button4).setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(final View view ) {
int position=getAdapterPosition();
String message = String.valueOf(position) ;
databaseReference= FirebaseDatabase.getInstance().getReference("attandance").child(wh).child(se).child(su).child(d).child(message);
databaseReference.setValue("A");
itemView.findViewById(R.id.button4).setBackgroundColor(Color.RED);
itemView.findViewById(R.id.button3).setEnabled(false);
itemView.findViewById(R.id.button4).setEnabled(false);
}
});
}
#Override
public void onClick(View view) {
// int position=this.getAdapterPosition();
// Intent intent=new Intent(context,mark.class);
// String message = String.valueOf(position);
// intent.putExtra("attan",message);
// context.startActivity(intent);
// Intent intent = new Intent(context,mark.class);
//String message = String.valueOf(position) ;
//intent.putExtra("attan",message);
//context.startActivity(intent);
// Toast.makeText( context,"position is "+String.valueOf(position), Toast.LENGTH_SHORT).show();
}
}
}
}

RecyclerView: different ViewType by different button

I have a recycler view to show an activity timeline and three floating buttons that click to add activity. How can I code three buttons to a different view? How can I pass the condition to the Adapter?
Now I can show only one viewType.
thx a lot.
Adapter.java
public class TripAdapter extends RecyclerView.Adapter<TripAdapter.TripHolder> {
private List<Trip> trips = new ArrayList<>();
private OnItemClickListener listener;
#NonNull
#Override
public TripHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.trip_item, parent, false);
return new TripHolder(itemView);
}
#Override
public void onBindViewHolder(#NonNull TripHolder holder, int position) {
Trip currentTrip = trips.get(position);
holder.textViewLodgingTitle.setText(currentTrip.getLodgingTitle());
holder.textTextViewLodgingCheckInDateTime.setText(currentTrip.getLodgingCheckInDateTime());
holder.textTextViewLodgingCheckOutDateTime.setText(currentTrip.getLodgingCheckOutDateTime());
holder.textViewLodgingAddress.setText(currentTrip.getLodgingAddress());
}
#Override
public int getItemCount() {
return trips.size();
}
public void setTrips(List<Trip> trips) {
this.trips = trips;
notifyDataSetChanged();
}
public Trip getTripAt(int position) {
return trips.get(position);
}
class TripHolder extends RecyclerView.ViewHolder {
//lodging
private TextView textViewLodgingTitle;
private TextView textTextViewLodgingCheckInDateTime;
private TextView textTextViewLodgingCheckOutDateTime;
private TextView textViewLodgingAddress;
private TextView textViewLodgingPhone;
private TextView textViewLodgingWebsite;
private TextView textViewLodgingEmail;
public TripHolder(#NonNull View itemView) {
super(itemView);
context = itemView.getContext();
textViewLodgingTitle = itemView.findViewById(R.id.text_view_title);
textTextViewLodgingCheckInDateTime = itemView.findViewById(R.id.text_view_start_date_time);
textTextViewLodgingCheckOutDateTime = itemView.findViewById(R.id.text_view_end_date_time);
textViewLodgingAddress = itemView.findViewById(R.id.text_view_description);
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
int position = getAdapterPosition();
if (listener != null && position != RecyclerView.NO_POSITION) {
listener.onItemClick(trips.get(position));
}
}
});
}
}
public interface OnItemClickListener {
void onItemClick(Trip trip);
}
public void setOnItemClickListener(OnItemClickListener listener) {
this.listener = listener;
}
}
MainActivity.java
//adapter
RecyclerView recyclerView = findViewById(R.id.recycler_view);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setHasFixedSize(true);
final TripAdapter adapter = new TripAdapter();
recyclerView.setAdapter(adapter );
tripViewModel = new ViewModelProvider(this, ViewModelProvider.AndroidViewModelFactory.getInstance(this.getApplication())).get(TripViewModel.class);
tripViewModel.getAllTrips().observe(this, new Observer<List<Trip>>() {
#Override
public void onChanged(#Nullable List<Trip> trips) {
adapter.setTrips(trips);
}
});
//this on onActivityResult()
else if (requestCode == ADD_LODGING && resultCode == Activity.RESULT_OK) {
//get data from lodging activity
String lodgingTitle = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_TITLE);
String lodgingCheckInDateTime = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_CHECK_IN_DATE_TIME);
String lodgingCheckOutDateTime = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_CHECK_OUT_DATE_TIME);
String lodgingDescription = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_DESCRIPTION);
String lodgingAddress = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_ADDRESS);
String lodgingPhone = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_PHONE);
String lodgingWebsite = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_WEBSITE);
String lodgingEmail = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_EMAIL);
String lodgingImagePath = "test";
Trip lodging = new Trip(lodgingTitle, lodgingCheckInDateTime, lodgingCheckOutDateTime,lodgingDescription, lodgingAddress, lodgingPhone, lodgingWebsite, lodgingEmail,lodgingImagePath);
tripViewModel.insert(lodging);
Toast.makeText(this, "lodging save", Toast.LENGTH_SHORT).show();
}
My application I adapt from codinginflow channel.
https://codinginflow.com/tutorials/android/room-viewmodel-livedata-recyclerview-mvvm/part-1-introduction

Recyclerview multi view items with button

I want to create a multi-view on Recylcerview by clicking the button(different view for each button). how to write code in Adapter Class or Condition to view it differently.
this is my code.
Adapter Class
public class TripAdapter extends RecyclerView.Adapter<TripAdapter.TripHolderOne> {
private List trips = new ArrayList<>();
#NonNull
#Override
public TripHolderOne onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.trip_item, parent, false);
return new TripHolderOne(itemView);
}
#Override
public int getItemViewType(int position) {
return super.getItemViewType(position);
}
#Override
public void onBindViewHolder(#NonNull TripHolderOne holder, int position) {
Trip currentTrip = trips.get(position);
holder.textViewTripTitle.setText(currentTrip.getTripTitle());
holder.textViewDescription.setText(currentTrip.getDescription());
holder.textViewPriority.setText(String.valueOf(currentTrip.getPriority()));
holder.textViewStartDateTime.setText(currentTrip.getStartDateTime());
}
#Override
public int getItemCount() {
return trips.size();
}
public void setTrips(List<Trip> trips) {
this.trips = trips;
notifyDataSetChanged();
}
public Trip getTripAt(int position) {
return trips.get(position);
}
class TripHolderOne extends RecyclerView.ViewHolder {
private TextView textViewTripTitle;
private TextView textViewDescription;
private TextView textViewPriority;
private TextView textViewStartDateTime;
public TripHolderOne(#NonNull View itemView) {
super(itemView);
textViewTripTitle = itemView.findViewById(R.id.text_view_title);
textViewDescription = itemView.findViewById(R.id.text_view_description);
textViewPriority = itemView.findViewById(R.id.text_view_priority);
textViewStartDateTime = itemView.findViewById(R.id.text_view_start_date_time);
}
}
MainActivity Class
RecyclerView recyclerView = findViewById(R.id.recycler_view);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setHasFixedSize(true);
final TripAdapter adapter = new TripAdapter();
recyclerView.setAdapter(adapter);
tripViewModel = new ViewModelProvider(this, ViewModelProvider.AndroidViewModelFactory.getInstance(this.getApplication())).get(TripViewModel.class);
tripViewModel.getAllTrips().observe(this, new Observer<List<Trip>>() {
#Override
public void onChanged(#Nullable List<Trip> trips) {
adapter.setTrips(trips);
}
});
And inside MainActivity also have function onActivityResult.
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == ADD_TRANSPORTATION && resultCode == Activity.RESULT_OK){
String title = data.getStringExtra(AddTripActivity.EXTRA_TITLE);
String description = data.getStringExtra(AddTripActivity.EXTRA_DESCRIPTION);
int priority = data.getIntExtra(AddTripActivity.EXTRA_PRIORITY, 1);
String startDate = data.getStringExtra(AddTripActivity.EXTRA_START_DATE);
String startTime = data.getStringExtra(AddTripActivity.EXTRA_START_TIME);
String startDateTime = data.getStringExtra(AddTripActivity.EXTRA_START_DATE_TIME);
Log.d("TAG", "Text from MainActivity2" + data.getStringExtra("text"));
Trip trip = new Trip(title, description, priority, startDate,startTime,startDateTime);
tripViewModel.insert(trip);
Toast.makeText(this, "trip saved", Toast.LENGTH_SHORT).show();
}

Twice data in RecyclerView

How can i fix twice data error.
After scrolling inside the RecyclerView, I am having a issue which is twice data.
Here is my Activity:
apiInterface = ApiClient.getApiClient().create(ApiInterface.class);
Call<List<Contacts>> call = apiInterface.chat(getUserLogin,friendId);
call.enqueue(new Callback<List<Contacts>>() {
#Override
public void onResponse(Call<List<Contacts>> call, Response<List<Contacts>> response) {
contacts = response.body();
CustomAdapterOfChat adapter = new CustomAdapterOfChat(contacts, ChatActivity.this);
recyclerView.setAdapter(adapter);
size = String.valueOf(contacts.size());
}
#Override
public void onFailure(Call<List<Contacts>> call, Throwable t) {
Toast.makeText(getApplicationContext(), "Error\n"+t.toString(), Toast.LENGTH_LONG).show();
}
});
My customAdapter ViewHolder
public class CustomAdapterOfChat extends RecyclerView.Adapter<CustomAdapterOfChat.MyViewHolder> {
private List<Contacts> contacts;
private Context context;
String getUserLogin;
public CustomAdapterOfChat(List<Contacts> contacts, Context context) {
this.contacts = contacts;
this.context = context;
}
#Override
public CustomAdapterOfChat.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.items_of_chat, parent, false);
return new CustomAdapterOfChat.MyViewHolder(view);
}
#Override
public void onBindViewHolder(CustomAdapterOfChat.MyViewHolder holder, final int position) {
//Fetching id from shared preferences
SharedPreferences sharedPreferences;
sharedPreferences =context.getSharedPreferences(Constant.SHARED_PREF_NAME, Context.MODE_PRIVATE);
getUserLogin = sharedPreferences.getString(Constant.ID_SHARED_PREF, "");
Log.d("USER_ID",getUserLogin);
Log.d("FRIEND_ID",contacts.get(position).getFriendId());
holder.time.setText(contacts.get(position).getDateAndTime());
if(getUserLogin.equals(contacts.get(position).getFriendId())) {
holder.msg_of_me.setVisibility(View.INVISIBLE);
holder.msg_of_them.setText(contacts.get(position).getMessage());
holder.img.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(context, UserProfileActivity.class);
intent.putExtra("id",contacts.get(position).getFriendId());
context.startActivity(intent);
}
});
Glide.with(context)
.load(Constant.BASE_URL+"y_chat/sign_up/"+contacts.get(position).getFriendName()+"/profile.png")
.error(R.drawable.error)
.into(holder.img);
}else{
holder.img.setVisibility(View.INVISIBLE);
holder.msg_of_them.setVisibility(View.INVISIBLE);
holder.msg_of_me.setText(contacts.get(position).getMessage());
}
}
#Override
public int getItemCount() {
return contacts.size();
}
public static class MyViewHolder extends RecyclerView.ViewHolder{
TextView msg_of_me,msg_of_them,time;
ImageView img;
public MyViewHolder(View itemView) {
super(itemView);
msg_of_me = itemView.findViewById(R.id.message_text1);
msg_of_them = itemView.findViewById(R.id.message_text);
img = itemView.findViewById(R.id.img_of_them);
time = itemView.findViewById(R.id.message_time);
}
}
}

You are getting data from SharedPreferences which is time consuming task however you can edit your code this way and check the output.
public class CustomAdapterOfChat extends RecyclerView.Adapter {
private List<Contacts> contacts;
private Context context;
String getUserLogin;
public CustomAdapterOfChat(List<Contacts> contacts, Context context) {
this.contacts = contacts;
this.context = context;
//get user Id here.
SharedPreferences sharedPreferences;
sharedPreferences =context.getSharedPreferences(Constant.SHARED_PREF_NAME,
Context.MODE_PRIVATE);
getUserLogin = sharedPreferences.getString(Constant.ID_SHARED_PREF, "");
}
#Override
public CustomAdapterOfChat.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.items_of_chat, parent, false);
return new CustomAdapterOfChat.MyViewHolder(view);
}
#Override
public void onBindViewHolder(CustomAdapterOfChat.MyViewHolder holder, final int position) {
Log.d("USER_ID",getUserLogin);
Log.d("FRIEND_ID",contacts.get(position).getFriendId());
holder.time.setText(contacts.get(position).getDateAndTime());
if(getUserLogin.equals(contacts.get(position).getFriendId())) {
holder.msg_of_me.setVisibility(View.INVISIBLE);
holder.msg_of_them.setText(contacts.get(position).getMessage());
holder.img.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(context, UserProfileActivity.class);
intent.putExtra("id",contacts.get(position).getFriendId());
context.startActivity(intent);
}
});
Glide.with(context)
.load(Constant.BASE_URL+"y_chat/sign_up/"+contacts.get(position).getFriendName()+"/profile.png")
.error(R.drawable.error)
.into(holder.img);
}else{
holder.img.setVisibility(View.INVISIBLE);
holder.msg_of_them.setVisibility(View.INVISIBLE);
holder.msg_of_me.setText(contacts.get(position).getMessage());
}
}
#Override
public int getItemCount() {
return contacts.size();
}
public static class MyViewHolder extends RecyclerView.ViewHolder{
TextView msg_of_me,msg_of_them,time;
ImageView img;
public MyViewHolder(View itemView) {
super(itemView);
msg_of_me = itemView.findViewById(R.id.message_text1);
msg_of_them = itemView.findViewById(R.id.message_text);
img = itemView.findViewById(R.id.img_of_them);
time = itemView.findViewById(R.id.message_time);
}
}

onClickListener in RecyclerView.ViewHolder

I've got a RecyclerView.ViewHolder and RecyclerView.Adapter, I need after click on item and then send information about this item to another Activity.
PlacesAdapter.java
public class PlacesAdapter extends RecyclerView.Adapter<PlacesViewHolder> {
private PlacesActivity placesActivity;
Context context;
private int position;
List<Places> places;
public PlacesAdapter(List<Places> places) {
this.places = places;}
#Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
}
#Override
public PlacesViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.places_view, viewGroup, false);
PlacesViewHolder pvh = new PlacesViewHolder(v);
return pvh;
}
#Override
public void onBindViewHolder(PlacesViewHolder personViewHolder, int i) {
personViewHolder.name.setText(places.get(i).name);
personViewHolder.address.setText(places.get(i).address);
Picasso.with(personViewHolder.itemView.getContext())
.load(places.get(i).photo)
.into(personViewHolder.getPhoto());
}
#Override
public int getItemCount() {
return places.size();
}
}
PlacesViewHolder.java
In this line "intent.putExtra(PlacesDetail.PLACES_NAME,);" How can I send name?
public class PlacesViewHolder extends RecyclerView.ViewHolder {
CardView cv;
public TextView name;
public TextView address;
public ImageView photo;
public PlacesViewHolder(final View itemView) {
super(itemView);
cv = (CardView)itemView.findViewById(R.id.cv);
name = (TextView)itemView.findViewById(R.id.person_name);
address = (TextView)itemView.findViewById(R.id.person_age);
photo = (ImageView)itemView.findViewById(R.id.person_photo);
itemView.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
Context context = v.getContext();
Intent intent = new Intent(context, PlacesDetail.class);
intent.putExtra(PlacesDetail.PLACES_NAME,);
context.startActivity(intent);
}
});
}
public TextView getAddress() {
return address;
}
public TextView getName() {
return name;
}
public ImageView getPhoto() {
return photo;
}
}

This is the complete example of custom Adapter where i'm able to get the details of particular items. In MainActivity you need to set the adapter :
adapter = new MyAdapter(getApplicationContext(), account_no, title, aFN1, aLN1,aFN2, aLN2,aFN3, aLN3,isavilable,waitlist,flag);
adapter.notifyDataSetChanged();
mRecyclerView.setAdapter(adapter);
Now see the code for the custom Adapter :
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
String TAG = "MyAdapter";
Context context;
private String[] accountNo;
private String[] title;
private String[] afn1;
private String[] aln1;
private String[] afn2;
private String[] aln2;
private String[] afn3;
private String[] aln3;
private String[] isAvailable;
private String[] waitlist;
private int flag;
public static class ViewHolder extends RecyclerView.ViewHolder {
public TextView account_no,title,afn1,afn2,aln1,aln2,color,is_available;
private ImageView img_android;
CardView cardView;
public ViewHolder(CardView v) {
super(v);
account_no = (TextView)v.findViewById(R.id.acctno);
title = (TextView)v.findViewById(R.id.title);
afn1 = (TextView) v.findViewById(R.id.afn1);
cardView = v;
}
}
// Provide a suitable constructor (depends on the kind of dataset)
public MyAdapter(Context context, String[] accountNo,String[] title,String[] afn1,String[] aln1,String[] afn2,String[] aln2,String[] afn3,String[] aln3,String[] isAvailable, String[] waitlist,int flag) {
this.context = context;
this.accountNo = accountNo;
this.title = title;
this.afn1 = afn1;
this.aln1 = aln1;
this.afn2 = afn2;
this.aln2 = aln2;
this.afn3 = afn3;
this.aln3 = aln3;
this.isAvailable = isAvailable;
this.waitlist = waitlist;
this.flag = flag;
Log.d(TAG,afn1.toString() +aln1+afn2+aln2+afn3+aln3.toString()+waitlist);
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent,int viewType) {
CardView cv = (CardView) LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item, parent, false);
return new ViewHolder(cv);
}
#Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
final CardView cardView = holder.cardView;
final TextView accountno = (TextView)cardView.findViewById(R.id.acctno);
accountno.setText(accountNo[position]);
final TextView titletxt = (TextView)cardView.findViewById(R.id.title);
titletxt.setText(title[position]);
final TextView afn1txt = (TextView) cardView.findViewById(R.id.afn1);
afn1txt.setText(afn1[position]+" "+aln1[position]);
Log.d(TAG,waitlist[position]);
cardView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int id = getItemViewType(position);
SharedPreferences sharedPreferences = context.getSharedPreferences(Constant.MYPREFERENCE,Context.MODE_PRIVATE);
SharedPreferences.Editor edit = sharedPreferences.edit();
edit.putString(Constant.ACCOUNT,accountNo[position]);
edit.putString(Constant.TITLE,title[position]);
edit.putString(Constant.AFN1,afn1[position]);
edit.putString(Constant.ALN1,aln1[position]);
edit.putString(Constant.AFN2,afn2[position]);
edit.putString(Constant.ALN2,aln2[position]);
edit.putString(Constant.AFN3,afn3[position]);
edit.putString(Constant.ALN3,aln3[position]);
edit.putBoolean(Constant.IS_AVAILABLE, Boolean.parseBoolean(isAvailable[position].toUpperCase()));
edit.putString(Constant.WAITLIST,waitlist[position]);
Log.d("WaitingNo2 :",""+String.valueOf(waitlist[position]));
edit.commit();
Intent intent = new Intent(v.getContext(), DetailsActivity.class);
v.getContext().startActivity(intent);
}
});
}
// Return the size of your dataset (invoked by the layout manager)
#Override
public int getItemCount() {
return accountNo.length;
}
}
After All that get the value from sharedPreferences in the Activity which is called on Card Click:
preferences = getSharedPreferences("myshared", Context.MODE_PRIVATE);
AccountNo = sharedPreferences.getString(Constant.ACCOUNT,null).toUpperCase();
title = sharedPreferences.getString(Constant.TITLE,null).toUpperCase();
afn1 = sharedPreferences.getString(Constant.AFN1,null).toUpperCase();
aln1 = sharedPreferences.getString(Constant.ALN1,null).toUpperCase();
afn2 = sharedPreferences.getString(Constant.AFN2,null).toUpperCase();
aln2 = sharedPreferences.getString(Constant.ALN2,null).toUpperCase();
afn3 = sharedPreferences.getString(Constant.AFN3,null).toUpperCase();
aln3 = sharedPreferences.getString(Constant.ALN3,null).toUpperCase();
isAvailable = sharedPreferences.getBoolean(Constant.IS_AVAILABLE,isAvailable);
waitlist = sharedPreferences.getString(Constant.WAITLIST,waitlist);
Now do whatever you want and enjoy the code.

You can achieve this by creating an interface inside your adapter for an itemclicklistener and then you can set onItemClickListener from your PlacesActivity.
Somewhere inside your PlacesAdapter you would need the following:
private onRecyclerViewItemClickListener mItemClickListener;
public void setOnItemClickListener(onRecyclerViewItemClickListener mItemClickListener) {
this.mItemClickListener = mItemClickListener;
}
public interface onRecyclerViewItemClickListener {
void onItemClickListener(View view, int position, String places_name);
}
Then inside your ViewHolder (which I've added as an inner class inside my adapter), you would apply the listener to the components you'd like the user to click, like so:
class PlacesViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
PlacesViewHolder(View view) {
super(view);
view.setOnClickListener(this);
}
#Override
public void onClick(View v) {
if (mItemClickListener != null) {
mItemClickListener.onItemClickListener(v, getAdapterPosition(), PlacesDetail.PLACES_NAME);
}
}
}
This example shows an onClickListener being applied to the view inside PlacesViewHolder.
recyclerView.setAdapter(adapter);// set adapter on recyclerview
adapter.notifyDataSetChanged();// Notify the adapter
adapter.setOnItemClickListener(new PlacesAdapter.onRecyclerViewItemClickListener() {
#Override
public void onItemClickListener(View view, int position, String places_name) {
//perform click logic here (places_name is passed)
}
});
To implement this code, you would setOnItemClickListener to your adapter inside PlacesActivity as shown above.

try this , it's work with me correctly
Create a new class and this code
public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener {
private OnItemClickListener mListener;
public interface OnItemClickListener {
public void onItemClick(View view, int position);
public void onLongItemClick(View view, int position);
}
GestureDetector mGestureDetector;
public RecyclerItemClickListener(Context context, final RecyclerView recyclerView, OnItemClickListener listener) {
mListener = listener;
mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
#Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && mListener != null) {
mListener.onLongItemClick(child, recyclerView.getChildAdapterPosition(child));
}
}
});
}
#Override public boolean onInterceptTouchEvent(RecyclerView view, MotionEvent e) {
View childView = view.findChildViewUnder(e.getX(), e.getY());
if (childView != null && mListener != null && mGestureDetector.onTouchEvent(e)) {
mListener.onItemClick(childView, view.getChildAdapterPosition(childView));
return true;
}
return false;
}
#Override public void onTouchEvent(RecyclerView view, MotionEvent motionEvent) { }
#Override
public void onRequestDisallowInterceptTouchEvent (boolean disallowIntercept){}
}
And in your Activity add this to your adapter implementation
mRecyclerView.addOnItemTouchListener(
new RecyclerItemClickListener(getActivity(), mRecyclerView, new RecyclerItemClickListener.OnItemClickListener() {
#Override
public void onItemClick(View view, int position) {
// do something
}
}
}
#Override
public void onLongItemClick(View view, int position) {
// do whatever
}
})
);

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