I have a RecyclerView with a custom listener that I want to implement in my main activity so that it gets notified when the RecyclerView item gets clicked.
However, I'm not sure where to put setMyAdapterListener in the adapter. Where would I put it?
public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private Context context;
private List<Data> data;
private MyAdapterListener myAdapterListener;
public MyAdapter(Context context, List<Object> data) {
this.context = context;
this.data = data;
}
public interface MyAdapterListener {
void onContainerClick();
}
public void setMyAdapterListener(MyAdapterListener myAdapterListener) {
this.myAdapterListener = myAdapterListener;
}
public class ViewHolderItem extends RecyclerView.ViewHolder implements View.OnClickListener {
public LinearLayout container;
public ImageView poster;
public ViewHolderItem(View v) {
super(v);
container = (LinearLayout) v.findViewById(R.id.container);
poster = (ImageView) v.findViewById(R.id.poster);
}
#Override
public void onClick(View v) {
int id = v.getId();
if (id == R.id.container) {
if (myAdapterListener != null) {
myAdapterListener.onContainerClick();
}
}
}
}
#Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
RecyclerView.ViewHolder viewHolder = null;
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View v2 = inflater.inflate(R.layout.item_layout, parent, false);
viewHolder = new ViewHolderItem(v2);
return viewHolder;
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
Data item = (Data) data.get(position);
holder.poster.setImageDrawable(someDrawable);
}
#Override
public int getItemCount() {
return data.size();
}
}
Remove the setMyAdapter() just pass the arguments you currently have in your setMyAdapterListener as part of your recyclerview's adapter contructor, see below:
public MyAdapter(Context context, List<Object> data, MyAdapterListener myAdapterListener) {
this.context = context;
this.data = data;
this.myAdapterListener = myAdapterListener;
}
//On your activity you have to implement the methods of your interface.
As #ScottS Said you dont need setMyAdapter() method, just pass the onclick listener Interface class as a argument to your adapter constructor then implement the interface methods in activity Class .. code is shown below.
public MyAdapter(Context context, List<Object> data) {
this.context = context;
this.data = data;
this.myAdapterListener = myAdapterListener;
}
public interface MyAdapterListener {
void onContainerClick(); // please provide 2 parameter that will help you more for manipulation like shown below
/// void onContainerClick(View view, int position);
}
}
public class ViewHolderItem extends RecyclerView.ViewHolder implements View.OnClickListener {
public LinearLayout container;
public ImageView poster;
public ViewHolderItem(View v) {
super(v);
container = (LinearLayout) v.findViewById(R.id.container);
poster = (ImageView) v.findViewById(R.id.poster);
container =setOnClickListener(this); /// this line must include
}
#Override
public void onClick(View v) {
int id = v.getId();
if (id == R.id.container) {
if (myAdapterListener != null) {
myAdapterListener.onContainerClick();
// myAdapterListener.onContainerClick(v,getAdapterPosition());
}
}
}
}
Then you can handle the events in your Activity or wherever your RecyclerView is being used:
mAdapter = new MyAdapter(getApplicationContext() , data, new MyAdapter.MyAdapterListener() {
#Override
public void onContainerClick(View v, int position) {
Log.d(TAG, "iconTextViewOnClick at position "+position);
}
});
mRecycler.setAdapter(mAdapter);
Related
I'm creating an app with firebase as a backend. I'm using same adapter for different activity, now it is working good but positions were mismatched for example: The output of position 0 shows in position 1 and for position 1 shows in position 2 and so on.. How to solve this problem, The problem with the positions of the output.
Adapter:
public class FrontlistAdapter extends FirebaseRecyclerAdapter<Gamedata, FrontlistAdapter.ViewHolder> {
private static final String TAG = "GameAdapter";
Context mContext;
int positions;
public FrontlistAdapter(#NonNull FirebaseRecyclerOptions<Gamedata> options, Context context) {
super(options);
mContext = context;
}
#Override
protected void onBindViewHolder(#NonNull ViewHolder holder, int position, #NonNull Gamedata model) {
holder.name.setText(model.getName());
holder.address.setText(model.getAddress());
//Picasso.get().load(model.getFrontcover()).into(holder.Frontcover);
Glide.with(mContext).load(model.getFrontcover()).into(holder.Frontcover);
positions = position; //<-- here I'm having positions but output shows different for each positions
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
View v = layoutInflater.inflate(R.layout.gamerow,parent,false);
ViewHolder viewHolder = new ViewHolder(v);
return viewHolder;
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
ImageView Frontcover;
TextView name;
TextView address;
View v;
public ViewHolder(#NonNull View itemView) {
super(itemView);
Frontcover = (ImageView)itemView.findViewById(R.id.frontcover);
name = (TextView)itemView.findViewById(R.id.frontname);
address=(TextView)itemView.findViewById(R.id.frontaddress);
v = itemView;
itemView.setClickable(true);
itemView.setOnClickListener((View.OnClickListener) this);
}
#Override
public void onClick(View v) {
String className = mContext.getClass().getSimpleName();
Intent intent = null;
switch (className) {
case "GameActivity":
intent = new Intent(mContext, Center_details.class);
intent.putExtra("User", getRef(positions).getKey());
break;
case "KidsActivity":
intent = new Intent(mContext,AllCenterDetails.class);
intent.putExtra("Kids",getRef(positions).getKey());
break;
}
mContext.startActivity(intent);
}
}
}
first what you have to do is create the interface like this
public interface ClickListner {
void onClick(View view, int position);
}
then in your activity create object of the interface like this and pass to the adapter along with your other data
ClickListner listener = ClickListner();
FrontlistAdapter customAdapter = new
FrontlistAdapter(AcceptedOrdersActivity.this,listener);
riderView.setAdapter(customAdapter);
copy this outside onCreate and intent in this
private ClickListner ClickListner() {
ClickListner listener = new ClickListner() {
#Override
public void onClick(View view, int position) {
int tag = (int) view.getTag();
if(tag == 0)
{
//Intent here
}
}
};
return listener;
}
now your adapter should be this one
public class FrontlistAdapter extends
RecyclerView.Adapter<FrontlistAdapter .DataObjectHolder>{
ClickListner listenr;
Context context;
public FrontlistAdapter (Context context,ClickListner listenr) {
this.context = context;
this.listenr = listenr;
}
public static class DataObjectHolder extends RecyclerView.ViewHolder {
Context context;
public DataObjectHolder(View itemView,ClickListner listenr) {
super(itemView);
this.listenr = listenr;
Frontcover = (ImageView)itemView.findViewById(R.id.frontcover);
name = (TextView)itemView.findViewById(R.id.frontname);
address=(TextView)itemView.findViewById(R.id.frontaddress);
v = itemView;
setOnClickListeners();
}
private void setOnClickListeners() {
`v.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
v.setTag(0);
listenr.onClick(v, getAdapterPosition());
}
});
}
}
#NonNull
#Override
public FrontlistAdapter.DataObjectHolder onCreateViewHolder(#NonNull ViewGroup parent,
int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.cell_orderdetail_list, parent, false);
FrontlistAdapter.DataObjectHolder dataObjectHolder = new
FrontlistAdapter.DataObjectHolder(view,listenr);
return dataObjectHolder;
}
#Override
public void onBindViewHolder(#NonNull FrontlistAdapter.DataObjectHolder holder, int
position) {
}
#Override
public int getItemCount() {
return options.size;
}
}
positions = position;
This is your problem. You're setting one global position for everything in the adapter.
Everywhere you are currently using position, you should instead be calling getBindingAdapterPosition() on the ViewHolder.
i have recycler adapter like this
public class ShopUsersAdapter extends RecyclerView.Adapter<ShopUsersAdapter.MyViewHolder> implements View.OnClickListener {
private List<ShopUsersRecyclerModel> user_list;
private Context context;
private AdminCheckLocActivity activity;
private AdapterCallback mAdapterCallback;
public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView user;
public TextView type;
private ImageButton btn_loc;
public MyViewHolder(View view) {
super(view);
user = (TextView) view.findViewById(R.id.txt_text);
type =(TextView)view.findViewById(R.id.txt_count);
btn_loc=(ImageButton)view.findViewById(R.id.btn_loc);
}
}
#Override
public ShopUsersAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.map_pop_up_item, parent, false);
context=parent.getContext();
itemView.setOnClickListener(this);
return new ShopUsersAdapter.MyViewHolder(itemView);
}
#Override
public void onClick(View v) {
}
public ShopUsersAdapter(List<ShopUsersRecyclerModel> user_list, AdminCheckLocActivity activity) {
this.user_list = user_list;
this.activity=activity;
this.mAdapterCallback = ((AdapterCallback) context);
}
#Override
public void onBindViewHolder(final ShopUsersAdapter.MyViewHolder holder, int position) {
final ShopUsersRecyclerModel user = user_list.get(position);
holder.user.setText(user.getUser_info());
if (user.getUser_type()==3){holder.type.setText("TV Pro.");}
if (user.getUser_type()==4){holder.type.setText("B. Esya Pro.");}
holder.btn_loc.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mAdapterCallback.onMethodCallback(user.getUser_info());
}
});
}
#Override
public int getItemCount() {
return user_list.size();
}
public interface AdapterCallback {
void onMethodCallback(String userName);
}
}
but i get error
NullPointer at
mAdapterCallback.onMethodCallback(user.getUser_info());
my activity code;
#Override
public void onMethodCallback(final String userName) {
Toast.makeText(this,userName,Toast.LENGTH_LONG).show();
}
and i implement this like ;
implements ShopUsersAdapter.AdapterCallback
userInfo data is not null, i check this. but i need this callback all of my recyclers please help me.
I suggest changing your adapter's constructor to directly receive a callback:
public ShopUsersAdapter(List<ShopUsersRecyclerModel> user_list, AdminCheckLocActivity activity, AdapterCallback callback) {
this.user_list = user_list;
this.activity=activity;
this.mAdapterCallback = callback;
}
You can also make sure your callback isn't null when you're utilizing it:
holder.btn_loc.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// This should be optional for your case
// but it can be useful if you're ever in a situation
// where the callback isn't always available
if(mAdapterCallback != null){
mAdapterCallback.onMethodCallback(user.getUser_info());
}
}
});
And within your Activity, make sure to pass in the callback as an argument when you create your Adapter instance:
// Use 'this' since your Activity implements the callback
ShopUsersAdapter adapter = new ShopUsersAdapter(myList, myActivity, this);
I'm creating an Android app, the data that i'm sending through intent is being retrieved every time i click on the item.
I'm sending the retrieved data(which it's a subcollection that is being retrieved every time i click on item) through the intent,and all data receives in an arraylist, so the listener don't know if the same data existed in the arraylist,because the data are in the other activity.
when i click for the first time the data displayed normally in ItemMarkerActivity but when i go back and click again on the same item i see the data load again in the recycler view,and added to the previous same data, i'm using the technique of removing the data onStop but it didn't work perfectly,because i need to close all activities to see that the data removed, i tried to send the CollectionReference through intent but i couldn't do. so I need a way of removing the data immediately after closing the activity, and if anyone has another approach for solving this problem it would better.
Thanks in advance
adapter.setOnItemClickListener(new MarketAdapterRecyclerView.OnItemClickListener() {
#Override
public void onItemClick(DocumentSnapshot documentSnapshot, int position) {
CollectionReference path = documentSnapshot.getReference().collection("ShoppingItems");
listener = path.addSnapshotListener(new EventListener<QuerySnapshot>() {
#Override
public void onEvent(#Nullable QuerySnapshot queryDocumentSnapshots, #Nullable FirebaseFirestoreException e) {
if (e != null) {
return;
}
for (DocumentChange dc : queryDocumentSnapshots.getDocumentChanges()) {
if (dc.getType() == DocumentChange.Type.ADDED) {
item = dc.getDocument().toObject(Item.class);
itemList.add(item);
}
}
Intent intent = new Intent (shoppingActivity.this, ItemMarkerActivity.class);
Log.v(TAG,"###################################" + itemList.toString());
intent.putExtra("keyName", itemList);
startActivity(intent);
}
});
}
}
The Activity That Receives The data
The Manifest
public class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.ViewHolder> implements Parcelable{
public ArrayList<Item> ItemList;
public Context mContext;
private onMallListener mOnMallListener;
private static final int NO_POSITION = -1;
public ItemAdapter(ArrayList<Item> ItemList, Context mContext, onMallListener mOnMallListener) {
this.ItemList = ItemList;
this.mContext = mContext;
this.mOnMallListener = mOnMallListener;
}
protected ItemAdapter(Parcel in) {
ItemList = in.createTypedArrayList(Item.CREATOR);
}
public static final Creator<ItemAdapter> CREATOR = new Creator<ItemAdapter>() {
#Override
public ItemAdapter createFromParcel(Parcel in) {
return new ItemAdapter(in);
}
#Override
public ItemAdapter[] newArray(int size) {
return new ItemAdapter[size];
}
};
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.activity_card_view_item, viewGroup, false);
ViewHolder viewHolder = new ViewHolder(view, mOnMallListener);
return viewHolder;
}
#Override
public void onBindViewHolder(#NonNull ViewHolder viewHolder, int i) {
Item item = ItemList.get(i);
viewHolder.itemType.setText(ItemList.get(i).getItemType());
Picasso.with(mContext)
.load(item.getImageUrl())
.fit()
.centerCrop().into(viewHolder.imageUrl);
}
#Override
public int getItemCount() {
return ItemList.size();
}
#Override
public int describeContents() {
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeTypedList(ItemList);
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
View mView;
public TextView price;
public TextView description;
public TextView itemType;
public ImageView imageUrl;
onMallListener onMallListener;
public ViewHolder(#NonNull View itemView, onMallListener mOnMallListener) {
super(itemView);
mView = itemView;
itemType = (TextView) mView.findViewById(R.id.card_view_image_title);
imageUrl = (ImageView) mView.findViewById(R.id.card_view_image);
this.onMallListener = mOnMallListener;
mView.setOnClickListener(this);
}
#Override
public void onClick(View v) {
if(mOnMallListener != null){
int position = getAdapterPosition();
if (position != RecyclerView.NO_POSITION){
mOnMallListener.onMallClick(position);
}
}
}
}
public interface onMallListener{
void onMallClick(int position);
}
}
Save data using Room database in first activity and retrieve it in second.
In any place of your code (and in any activity's callback) you can clean db and all lists/recyclers which listen this data.
https://developer.android.com/training/data-storage/room
Hope it'll help
I made an Adapter for my recyclerView. This adapter works when I use on any xxxActivity.java but when I try to use is on a Fragment Its hows error. Doesn't let me Pass the onClickHandler() that I created in Adapter.
I am Setting Adapter Like this -
events_recyclerview.setAdapter(new FixedPlaceListAdapter(getContext(), placelist, mClickHandler)); //ClickListener doesn't work :'(
Another try was like --
events_recyclerview.setAdapter(new FixedPlaceListAdapter(getContext(), placelist, getmClickHandler()));
Here, I implemented getClickHandler() in the Fragment--
public FixedPlaceListAdapter.FixedPlaceListAdapterOnclickHandler getmClickHandler() {
return mClickHandler;
} //Still doesn't work :'(
and the Adapter Part--
Constructor like this-
public FixedPlaceListAdapter(Context mContext, List<PlaceBean>
placeBeanList, FixedPlaceListAdapterOnclickHandler mClickHandler) {
this.mContext = mContext;
this.placeBeanList = placeBeanList;
this.mClickHandler = mClickHandler;
}
I tried to do this ... but still doesn't work--
events_recyclerview.setAdapter(new FixedPlaceListAdapter(getContext(), placelist, FixedPlaceListAdapter.FixedPlaceListAdapterOnclickHandler.mClickhandler));
here is my full adapter code-
public class FixedPlaceListAdapter extends RecyclerView.Adapter<FixedPlaceListAdapter.FixedPlaceListAdapterViewHolder> {
private final FixedPlaceListAdapterOnclickHandler mClickHandler;
Context mContext;
List<PlaceBean> placeBeanList;
public FixedPlaceListAdapter(Context mContext, List<PlaceBean> placeBeanList, FixedPlaceListAdapterOnclickHandler mClickHandler) {
this.mContext = mContext;
this.placeBeanList = placeBeanList;
this.mClickHandler = mClickHandler;
}
public void setData(List<PlaceBean> placeBeanList) {
this.placeBeanList = placeBeanList;
notifyDataSetChanged();
}
#Override
public FixedPlaceListAdapterViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(mContext);
View view = inflater.inflate(R.layout.top_list_single, parent, false);
return new FixedPlaceListAdapterViewHolder(view);
}
#Override
public void onBindViewHolder(FixedPlaceListAdapterViewHolder holder, int position) {
PlaceBean pb = placeBeanList.get(position);
holder.nameTextView.setText(pb.getName());
holder.addressTextView.setText(pb.getVicinity());
holder.rating.setRating(pb.getRating());
if (pb.getPhotoref() != null) {
String imageUrl = UrlsUtil.getSinglePhotoUrlString(mContext, pb.getPhotoref(), "350", "300");
Picasso.with(mContext)
.load(imageUrl)
.into(holder.thumbnailImage);
}
}
#Override
public int getItemCount() {
return placeBeanList.size();
}
public interface FixedPlaceListAdapterOnclickHandler {
void onClick(String id);
}
public class FixedPlaceListAdapterViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView nameTextView;
TextView addressTextView;
RatingBar rating;
ImageView thumbnailImage;
public FixedPlaceListAdapterViewHolder(View itemView) {
super(itemView);
nameTextView = (TextView) itemView.findViewById(R.id.place_name_now_in_list);
addressTextView = (TextView) itemView.findViewById(R.id.address_in_list);
rating = (RatingBar) itemView.findViewById(R.id.rating_single_place_in_list);
thumbnailImage = (ImageView) itemView.findViewById(R.id.place_image_thumb);
itemView.setOnClickListener(this);
}
#Override
public void onClick(View v) {
String placeID = placeBeanList.get(getAdapterPosition()).getPlaceref();
mClickHandler.onClick(placeID);
}
}
}
Need Help!
public class CategoryNewsListAdapter extends RecyclerView.Adapter<CategoryNewsListAdapter.ViewHolder> {
private List<CategoryNews> actors = new ArrayList<>();
private Context mContext;
private Queue<List<CategoryNews>> pendingUpdates =
new ArrayDeque<>();
**public interface NewsItemClickListener {
void onNewsItemClick(int pos, CategoryNews categoryNews, ImageView shareImageView);
}**
**NewsItemClickListener newsItemClickListener;**
public CategoryNewsListAdapter(List<CategoryNews> personList, Context mContext, NewsItemClickListener newsItemClickListener) {
this.actors.addAll(personList);
this.mContext = mContext;
this.newsItemClickListener = newsItemClickListener;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
final LayoutInflater inflater = LayoutInflater.from(parent.getContext());
final View view = inflater.inflate(R.layout.particular_cat_news_list_row, parent, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
Log.d("BusinessSubCategoryListAdapter", "Bindviewholder without payload");
final CategoryNews newsCategory = actors.get(position);
holder.news_title.setText(newsCategory.getPostTitle());
holder.news_date.setText(newsCategory.getPostDate());
holder.news_category.setText(newsCategory.getCategoryName());
holder.news_description.setText(newsCategory.getPostContent());
// GlideApp
// .with(mContext).load(newsCategory.getPostImage())
// .placeholder(R.mipmap.ic_launcher) // can also be a drawable
// .error(R.drawable.placeholder_image) // will be displayed if the image cannot be loaded
// .crossFade()
// .into(holder.news_image);
Picasso.with(mContext).load(newsCategory.getPostImage()).placeholder(R.drawable.placeholder_image).error(R.drawable.placeholder_image).into(holder.news_image);
**holder.itemView.setOnClickListener(v -> {
newsItemClickListener.onNewsItemClick(position, newsCategory, holder.news_image);
});**
}
#Override
public void onBindViewHolder(ViewHolder holder, int position, List<Object> payloads) {
if (payloads.isEmpty()) {
// if empty, do full binding;
onBindViewHolder(holder, position);
return;
}
Bundle bundle = (Bundle) payloads.get(0);
String newTitle = bundle.getString("NAME_CHANGE");
if (newTitle != null) {
// add some animation if you want
final CategoryNews actor = actors.get(position);
holder.news_title.setText(actor.getPostTitle());
holder.news_date.setText(actor.getPostDate());
holder.news_category.setText(actor.getCategoryName());
holder.news_description.setText(actor.getPostContent());
}
}
public void addItems(List<CategoryNews> newItems) {
// record this value before making any changes to the existing list
int curSize = getItemCount();
// update the existing list
actors.addAll(newItems);
// curSize should represent the first element that got added
// newItems.size() represents the itemCount
notifyItemRangeInserted(curSize, newItems.size());
}
public void updtateItems(List<CategoryNews> newItems) {
// record this value before making any changes to the existing list
int curSize = getItemCount();
// update the existing list
actors.addAll(newItems);
// curSize should represent the first element that got added
// newItems.size() represents the itemCount
notifyItemRangeInserted(0,newItems.size()- getItemCount()-1);
}
#Override
public int getItemCount() {
return actors.size();
}
public static class ViewHolder extends RecyclerView.ViewHolder {
private TextView news_title, news_date, news_category, news_description;
private ImageView news_image;
public ViewHolder(View itemView) {
super(itemView);
news_title = (TextView) itemView.findViewById(R.id.news_title);
news_date = (TextView) itemView.findViewById(R.id.news_date);
news_category = (TextView) itemView.findViewById(R.id.news_category);
news_description = (TextView) itemView.findViewById(R.id.news_description);
news_image = (ImageView) itemView.findViewById(R.id.news_image);
}
}
}
And In your activity
implements NewsItemClickListener
create object NewsItemClickListener newsItemClickListner;
inside oncreate newsItemClickListner=this; (you mush have implemented 1)
pass that object to recyclerview.
In adapter it is received by this
public CategoryNewsListAdapter(List personList, Context mContext, NewsItemClickListener newsItemClickListener) {
this.actors.addAll(personList);
this.mContext = mContext;
this.newsItemClickListener = newsItemClickListener;
}
In your activity
CategoryNewsListAdapter categoryNewsListAdapter= new CategoryNewsListAdapter(list,this,newsItemClickListner)
After doing all this your overriden method will be called when you click in item of recycler view where you have set onclick listner
Okay .. The Problem is Fixed now ...
I was passing the wrong value or maybe the method of passing the ClickHandler was wrong.
The Solution of the Problem :
I Created another Class for ClickHandler-
public class PlaceCardClickHandler implements
FixedPlaceListAdapter.FixedPlaceListAdapterOnclickHandler,
PlaceListAdapter.PlaceListAdapterOnclickHandler {
Context mContext;
public PlaceCardClickHandler(Context mContext) {
this.mContext = mContext;
}
#Override
public void onClick(String id) {
Intent intentToStartDetail = new Intent(mContext, PlaceDetailActivity.class);
intentToStartDetail.putExtra("id", id);
mContext.startActivity(intentToStartDetail);
}
}
and the change in the Fragment was like this- (Just passed a object from the ClickHandler class)
events_recyclerview.setAdapter(new FixedPlaceListAdapter(getContext(), placelist, new PlaceCardClickHandler(getContext())));
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
}
})
);