I ran into situation where the RecyclerView with GridLayoutManager is not working on onClick(). Like ListView, when I tap/click on a picture in a GridView, the onClick is not returning the single item details. When I click on a poster of a movie, it should only display the details about the particular movie, but instead it is displaying multiple movies details in a scroll view.
Look at the code below:
public class MoviesGridAdapter extends RecyclerView.Adapter<MoviesGridAdapter.PosterViewHolder> {
private Context context;
private List<Movies> movieItems = new ArrayList<>();
CustomItemClickListener listener;
public MoviesGridAdapter(Context context, List<Movies> movieItems) {
this.context = context;
this.movieItems = movieItems;
}
#Override
public PosterViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.movies_grid_view_item, parent, false);
final MoviesGridAdapter.PosterViewHolder vh = new MoviesGridAdapter.PosterViewHolder(view);
view.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
final Context zContext = context;
Intent intent = new Intent(zContext, MoviesDetailActivity.class);
Movies movies = movieItems.get(vh.getAdapterPosition());
intent.putExtra("Items Selection", movies.getPosterPath());
intent.putExtra("Items Selection 1", movies.getTitle());
intent.putExtra("Items Selection 2", movies.getReleaseDate());
intent.putExtra("Items Selection 3", movies.getVoteAverage());
intent.putExtra("Items Selection 4", movies.getOverview());
zContext.startActivity(intent);
}
});
return vh;
}
public void setMoviesData(List<Movies> moviesData) {
movieItems = moviesData;
notifyDataSetChanged();
}
#Override
public void onBindViewHolder(PosterViewHolder holder, final int position) {
Context mcontext = context;
Movies movies = movieItems.get(position);
String posterUrlPath = movies.getPosterPath();
Picasso.with(mcontext)
.load(Constants.MOVIES_POSTER_URL + posterUrlPath)
.into(holder.poster);
}
#Override
public int getItemCount() {
return movieItems.size();
}
public class PosterViewHolder extends RecyclerView.ViewHolder {
ImageView poster;
public PosterViewHolder(final View itemView) {
super(itemView);
poster = (ImageView) itemView.findViewById(R.id.movies_image_view_retrofit);
}
}
}
And following is the Fragment:
public class MoviesFragment extends Fragment {
private static final int COLUMN_COUNT = 2;
private List<Movies> movieItems = new ArrayList<>();
private RecyclerView recyclerView;
private MoviesGridAdapter adapter;
private Subscription subscription;
public MoviesFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.movies_fragment_content, container, false);
GridLayoutManager layoutManager = new GridLayoutManager(getContext(), COLUMN_COUNT);
recyclerView = (RecyclerView) view.findViewById(R.id.movies_recycler_view);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(layoutManager);
adapter = new MoviesGridAdapter(getActivity(), movieItems);
recyclerView.setAdapter(adapter);
return view;
}
#Override
public void onStart() {
super.onStart();
if (movieItems != null) {
adapter.setMoviesData(movieItems);
}
loadDate();
}
private void loadDate() {
MoviesAPI api = RetrofitManager.getMoviesClient().create(MoviesAPI.class);
subscription = api.getPopularMovies(APIKeys.MOVIES_DB_API_KEY)
.observeOn(AndroidSchedulers.mainThread())
.subscribeOn(Schedulers.io())
.subscribe(
new Action1<MoviesResponse>() {
#Override
public void call(MoviesResponse response) {
movieItems = response.getMovies();
adapter.setMoviesData(response.getMovies());
}
}, new Action1<Throwable>() {
#Override
public void call(Throwable throwable) {
}
}
);
}
}
Thank you guys for the attention. The solution I am looking is: when I click a picture from the grid view, I need the details about the particular movie like title, overview, releaseDate etc.
Make your model parcelable or send your model fields one by one but using a different keyword. You're adding same keyword with different values in here:
intent.putExtra("Items Selection", movies.getPosterPath());
intent.putExtra("Items Selection", movies.getTitle());
intent.putExtra("Items Selection", movies.getReleaseDate());
intent.putExtra("Items Selection", movies.getVoteAverage());
intent.putExtra("Items Selection", movies.getOverview());
Here's a tutorial link how you can make your model parcelable. And after that you can update your adapter as following:
public class MoviesGridAdapter extends RecyclerView.Adapter<MoviesGridAdapter.PosterViewHolder> {
private Context context;
private List<Movies> movieItems = new ArrayList<>();
CustomItemClickListener listener;
public MoviesGridAdapter(Context context, List<Movies> movieItems) {
this.context = context;
this.movieItems = movieItems;
}
#Override
public PosterViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.movies_grid_view_item, parent, false);
return new PosterViewHolder(view);
}
public void setMoviesData(List<Movies> moviesData) {
movieItems = moviesData;
notifyDataSetChanged();
}
#Override
public void onBindViewHolder(PosterViewHolder holder, final int position) {
Movies movie = movieItems.get(position);
String posterUrlPath = movie.getPosterPath();
Picasso.with(mcontext)
.load(Constants.MOVIES_POSTER_URL + posterUrlPath)
.into(holder.poster);
holder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(context, MoviesDetailActivity.class);
intent.putExtra("movie", movie)
context.startActivity(intent);
}
});
}
#Override
public int getItemCount() {
return movieItems.size();
}
public class PosterViewHolder extends RecyclerView.ViewHolder {
ImageView poster;
public PosterViewHolder(View itemView) {
super(itemView);
poster = (ImageView) itemView.findViewById(R.id.movies_image_view_retrofit);
}
}
}
Don't set your click listener in onCreateViewHolder. Instead set your listener in onBindViewHolder method
Related
Is it all possible to access an adapter's data via another adapter?
I want to start an activity and pass data from an adapter to a fragment which is used in TabLayout as one of three fragments, I have two adapters and a button which is clicked to start an activity, its Java code is in my first adapter and I need to pass second adapter's data via second adapter itself
here is my codes:
my first adapter:
public class RecyclerViewDataAdapter extends RecyclerView.Adapter<RecyclerViewDataAdapter.ItemRowHolder>{
private ArrayList<SectionDataModel> dataList;
private Context mContext;
private RecyclerView.RecycledViewPool recycledViewPool;
private SnapHelper snapHelper;
public RecyclerViewDataAdapter(ArrayList<SectionDataModel> dataList, Context mContext) {
this.dataList = dataList;
this.mContext = mContext;
recycledViewPool = new RecyclerView.RecycledViewPool();
}
#Override
public ItemRowHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item, null);
ItemRowHolder rowHolder = new ItemRowHolder(v);
snapHelper = new GravitySnapHelper(Gravity.START);
return rowHolder;
}
#Override
public void onBindViewHolder(ItemRowHolder holder, int position) {
ArrayList singleSectionItems = dataList.get(position).getAllItemInSection();
final String sectionName = dataList.get(position).getHeaderTitle();
holder.itemTitle.setText(sectionName);
SectionDataAdapter adapter = new SectionDataAdapter(singleSectionItems, mContext);
holder.recyclerView.setHasFixedSize(true);
holder.recyclerView.setLayoutManager(new LinearLayoutManager(mContext, LinearLayoutManager.HORIZONTAL, false));
holder.recyclerView.setAdapter(adapter);
holder.recyclerView.setRecycledViewPool(recycledViewPool);
snapHelper.attachToRecyclerView(holder.recyclerView);
holder.btnMore.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//here i can start the activity but..(second adapter)
Toast.makeText(view.getContext(), sectionName, Toast.LENGTH_SHORT).show();
}
});
}
#Override
public int getItemCount() {
return (null != dataList ? dataList.size() : 0);
}
public class ItemRowHolder extends RecyclerView.ViewHolder {
protected ImageView mitemImage;
protected TextView mitemtext;
protected TextView itemTitle;
protected RecyclerView recyclerView;
protected Button btnMore;
public ItemRowHolder(View itemView) {
super(itemView);
this.mitemImage = itemView.findViewById(R.id.itemImage);
this.mitemtext = itemView.findViewById(R.id.tvTitle);
this.itemTitle = itemView.findViewById(R.id.itemTitle);
this.recyclerView = itemView.findViewById(R.id.recycler_view_list);
this.btnMore = itemView.findViewById(R.id.btnMore);
}
}
} '
and my second adapter:
import java.net.PortUnreachableException;
import java.util.ArrayList;
public class SectionDataAdapter extends RecyclerView.Adapter<SectionDataAdapter.SssingleItemRowHolder>{
private ArrayList<SingleItemModel> itemModels;
private Context mContext;
public SectionDataAdapter(ArrayList<SingleItemModel> itemModels, Context mContext) {
this.itemModels = itemModels;
this.mContext = mContext;
}
#Override
public SingleItemRowHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_single_card, null);
SingleItemRowHolder singleItemRowHolder = new SingleItemRowHolder(v);
return singleItemRowHolder;
}
#Override
public void onBindViewHolder(SingleItemRowHolder holder, int position) {
SingleItemModel itemModel = itemModels.get(position);
holder.tvTitle.setText(itemModel.getName());
holder.mitemImage.setImageResource(itemModel.getImage());
}
#Override
public int getItemCount() {
return (null != itemModels ? itemModels.size() : 0);
}
public class SingleItemRowHolder extends RecyclerView.ViewHolder {
protected TextView tvTitle;
protected ImageView mitemImage;
public SingleItemRowHolder(View itemView) {
super(itemView);
final Intent intent = new Intent(mContext,MainActivity.class);
this.mitemImage = itemView.findViewById(R.id.itemImage);
this.tvTitle = itemView.findViewById(R.id.tvTitle);
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//... need to start the activity from here
Toast.makeText(view.getContext(), tvTitle.getText(), Toast.LENGTH_SHORT).show();
}
});
}
}
Like #MilaDroid said you simply need a getter that returns the another Adapter's ArrayList<SingleItemModel> but the problem you will face is that you need to have the same instance of the Adapter from the Activity in order to get the populated ArrayList<SingleItemModel>.
A good workaround is to used Bill Pugh's Singleton in the Adapter
public class Adapter {
private ArrayList<SingleItemModel> list;
private Adapter() {}
public static Adapter getInstance() {
return InstInit.INSTANCE;
}
// Don't forget to set the list (or NPE)
// because we can't argue with a Singleton
public void setList(ArrayList<SingleItemModel> list) {
this.list = list;
}
// You can now get the ArrayList
public ArrayList<SingleItemModel> getList() {
return list;
}
private static class InstInit {
private static final Adapter INSTANCE = new Adapter();
}
// Overrided RecyclerView.Adapter Methods
.................
}
Retrieving the ArrayList assuming that the following Adapters are Singleton
AdapterOne a1 = AdapterOne.getInstance();
AdapterTwo a2 = AdapterTwo.getInstance();
ArrayList<SingleItemModel> a1RetrievedList = a1.getList();
// You don't need to create a new instance
// creating a new instance doesn't make sense
// because you need to repopulate the list
// for the new instance.
ArrayList<SingleItemModel> a2RetrievedList = a2.getList();
// You can also retrieve from AdapterTwo
I am trying use retrofit and recyclerview to display from a web app. I have the following models:
Main Activities
public class ProfileActivity extends AppCompatActivity {
private SalesAdapter mAdapter;
private RecyclerView mRecyclerView;
private SaleService mService;
#Override
protected void onCreate (Bundle savedInstanceState) {
super.onCreate( savedInstanceState );
setContentView(R.layout.activity_profile );
mService = ApiUtils.getSaleService();
mRecyclerView = (RecyclerView) findViewById(R.id.rvItems);
mAdapter = new SalesAdapter(this, new ArrayList<Sale>(0), new SalesAdapter.ItemListener() {
#Override
public void onPostClick(long id) {
}
});
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(layoutManager);
mRecyclerView.setAdapter(mAdapter);
mRecyclerView.setHasFixedSize(true);
RecyclerView.ItemDecoration itemDecoration = new DividerItemDecoration(this, DividerItemDecoration.VERTICAL);
mRecyclerView.addItemDecoration(itemDecoration);
loadAnswers();
}
public void loadAnswers() {
mService.getSales().enqueue(new Callback<List<Sale>>() {
#Override
public void onResponse(Call<List<Sale>> call, Response<List<Sale>> response) {
if(response.isSuccessful()) {
mAdapter.UpdateSales(response.body());
} else {
int statuscode = response.code();
}
}
#Override
public void onFailure(Call<List<Sale>> call, Throwable t) {
}
});
}
}
Recyclerview Adapter
public class SalesAdapter extends RecyclerView.Adapter<SalesAdapter.ViewHolder>{
private Context mContext;
private List<Sale> mSales;
private ItemListener mItemListener;
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
public TextView tvLocaleName;
ItemListener mItemListener;
public ViewHolder(View itemView, ItemListener itemListener) {
super(itemView);
tvLocaleName = (TextView) itemView.findViewById(android.R.id.text1);
this.mItemListener = itemListener;
itemView.setOnClickListener(this);
}
#Override
public void onClick(View view) {
Sale sale = getSales(getAdapterPosition());
this.mItemListener.onPostClick(sale.getId());
notifyDataSetChanged();
}
}
public SalesAdapter(Context mContext, List<Sale> mSales, ItemListener mItemListener) {
this.mContext = mContext;
this.mSales = mSales;
this.mItemListener = mItemListener;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
Context context = parent.getContext();
LayoutInflater inflater = LayoutInflater.from(context);
View view = inflater.inflate(android.R.layout.simple_list_item_1, parent, false);
return new ViewHolder(view, this.mItemListener);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
Sale sale = mSales.get(position);
TextView textView = holder.tvLocaleName;
textView.setText(sale.getLocaleName());
}
#Override
public int getItemCount() {
return mSales.size();
}
public void UpdateSales(List<Sale> sales) {
mSales = sales;
}
private Sale getSales(int position) {
return mSales.get(position);
}
public interface ItemListener {
void onPostClick(long id);
}
}
from the image you can see that i am able to get back the data, but how do I display in it the recyclerview? where am i going wrong with code?
Add a notifyDataSetChanged() call to your adapter after you refresh the list.
Your method should look like:
public void UpdateSales(List<Sale> sales) {
mSales = sales;
notifyDataSetChanged();
}
Check out this link to learn more about this method.
I tried to set the adapter on fragment, but nothing shows up.
The object retrieves the data from API but doesn't show on the screen.
I have already put the break point on rvItem.setAdapter(mainAdapter); but nothings happen, the debug passes straight through.
public class ItemFragment extends Fragment {
private MainAdapter mainAdapter;
private ItemPresenter itemPresenter;
private GridLayoutManager mLayoutManager;
private List<ObjectAdapter> list = new ArrayList<>();
private String region = "br";
#Bind(R.id.rvItem)
RecyclerView rvItem;
public ItemFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_item, container, false);
ButterKnife.bind(this, view);
itemPresenter = new ItemPresenter();
mLayoutManager = new GridLayoutManager(getActivity(), 4);
rvItem.setLayoutManager(mLayoutManager);
getList();
return view;
}
private void getList() {
itemPresenter.loadItemList(region, "all", AppConfigs.api_key, new ItemListListener() {
#Override
public void onRequestStarted() {
}
#Override
public void onRequestFinished() {
}
#Override
public void onError(Throwable error) {
}
#Override
public void onItemListLoad(List<ItemDto> itemList) {
displayItemList(ObjectAdapter.convertItemToObjetct(itemList));
}
});
}
public void displayItemList(List<ObjectAdapter> itemList) {
list = itemList;
mainAdapter = new MainAdapter(getActivity(), list, new MainAdapter.OnObjectClickListener() {
#Override
public void OnObjectClickListener(ObjectAdapter objectAdapter) {
Toast.makeText(getActivity(), "Object Adapter" + objectAdapter.Id, Toast.LENGTH_SHORT).show();
}
});
rvItem.setAdapter(mainAdapter);
mainAdapter.notifyDataSetChanged();
}
}
Adapter:
public class MainAdapter extends
RecyclerView.Adapter<MainAdapter.MainAdapterViewHolder> {
public List<ObjectAdapter> mObjecterList;
private final OnObjectClickListener listener;
private Context mContext;
public interface OnObjectClickListener {
void OnObjectClickListener(ObjectAdapter objectAdapter);
}
public MainAdapter(Context context, List<ObjectAdapter> objectAdapterList, OnObjectClickListener listener) {
this.mObjecterList = objectAdapterList;
this.listener = listener;
this.mContext = context;
}
#Override
public MainAdapter.MainAdapterViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.activity_main_adapter, parent, false);
return new MainAdapterViewHolder(view);
}
#Override
public void onBindViewHolder(MainAdapter.MainAdapterViewHolder holder, int position) {
ObjectAdapter ob = mObjecterList.get(position);
holder.tvNameText.setText(ob.Name);
holder.bind(mObjecterList.get(position), listener);
String url = "";
switch (ob.Type){
case CHAMPION: url = String.format(AppConfigs.portraitChampion, ob.Portrait);
break;
case SPELL: url = String.format(AppConfigs.portraitSpell, ob.Portrait);
break;
case ITEM: url = String.format(AppConfigs.portraitItem, ob.Portrait);
break;
}
Picasso.with(mContext).load(url).into(holder.ivRetrato);
}
#Override
public int getItemCount() {
return this.mObjecterList.size();
}
public static class MainAdapterViewHolder extends RecyclerView.ViewHolder {
public TextView tvNameText;
public ImageView ivRetrato;
public MainAdapterViewHolder(View itemView) {
super(itemView);
this.tvNameText = (TextView) itemView.findViewById(R.id.tvNameText);
this.ivRetrato = (ImageView) itemView.findViewById(R.id.ivImagePortrait);
}
public void bind(final ObjectAdapter objectAdapterListItem, final OnObjectClickListener listener) {
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
listener.OnObjectClickListener(objectAdapterListItem);
}
});
}
}
}
You need to set adapter directly at onCreateView method and call notifyDataSetChanged() of adapter when data loaded
So I have a CardView in a RecyclerView which has some data inside it. I would like to click on a specific card and launch a new fragment that displays specific data from the data in the CardView (more details about the data in the CardView). Here is the relevant code.
I don't have the most experience in programming and Android in general, any help would be appreciated!
DetailsFragment: `
public class DetailsFragment extends Fragment {
private CardView cardView;
private RecyclerView rv;
private List<Detail> detailList = new ArrayList<>();
public DetailsFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_details, container, false);
Context context = getActivity();
cardView = (CardView) rootView.findViewById(R.id.cv);
rv = (RecyclerView) rootView.findViewById(R.id.rv);
final LinearLayoutManager llm = new LinearLayoutManager(context);
rv.setLayoutManager(llm);
RVDetailAdapter adapter = new RVDetailAdapter(detailList);
rv.setAdapter(adapter);
initializeData();
initializeAdapter();
return rootView;
}
private void initializeData() {
detailList = new ArrayList<>();
// not sure here
detailList.add(new Detail(" "));
}
private void initializeAdapter(){
RVDetailAdapter adapter = new RVDetailAdapter(detailList);
rv.setAdapter(adapter);
}
}
RVNewsAdapater:
public class RVNewsAdapter extends RecyclerView.Adapter<RVNewsAdapter.NewsViewHolder> {
public static final String KEY_LINK ="link";
public static class NewsViewHolder extends RecyclerView.ViewHolder
implements View.OnClickListener {
private static final String TAG = "Hello";
CardView cv;
TextView date;
TextView link;
TextView title;
TextView today;
public NewsViewHolder(View itemView) {
super(itemView);
cv = (CardView) itemView.findViewById(R.id.cv);
date = (TextView) itemView.findViewById(R.id.date);
link = (TextView) itemView.findViewById(R.id.link);
title = (TextView) itemView.findViewById(R.id.heading);
today = (TextView) itemView.findViewById(R.id.today);
itemView.setOnClickListener(this);
}
#Override
public void onClick(View view) {
Context context = view.getContext();
Intent intent = null;
for(int postion = 0; postion<42; postion++) {
intent = new Intent(context, Details.class);
}
context.startActivity(intent);
}
}
List<News> news;
RVNewsAdapter(List<News> news) {
this.news = news;
}
#Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
}
#Override
public RVNewsAdapter.NewsViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.itemnewsfeed, viewGroup, false);
NewsViewHolder nvh = new NewsViewHolder(v);
return nvh;
}
#Override
public void onBindViewHolder(NewsViewHolder newsViewHolder, int i) {
newsViewHolder.date.setText(news.get(i).date);
newsViewHolder.link.setText(news.get(i).link);
newsViewHolder.title.setText(news.get(i).title);
newsViewHolder.today.setText(news.get(i).today);
}
#Override
public int getItemCount() {
if (news != null) {
return news.size();
}
return 0;
}
}
RVDetailAdapter:
public class RVDetailAdapter extends RecyclerView.Adapter<RVDetailAdapter.DetailViewHolder> {
public static class DetailViewHolder extends RecyclerView.ViewHolder {
TextView link;
public DetailViewHolder(View itemView) {
super(itemView);
link = (TextView) itemView.findViewById(R.id.link);
}
}
List<Detail> detail;
RVDetailAdapter(List<Detail> detail) {
this.detail = detail;
}
#Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
}
#Override
public RVDetailAdapter.DetailViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.itemnewsfeed, viewGroup, false);
DetailViewHolder dvh = new DetailViewHolder(v);
return dvh;
}
#Override
public void onBindViewHolder(DetailViewHolder detailViewHolder, int i) {
detailViewHolder.link.setText(detail.get(i).link);
}
#Override
public int getItemCount() {
if (detail != null) {
return detail.size();
}
return 0;
}
}
Not sure if you're still looking for an answer, but I just saw the post and thought I'd give you one option.
When I'm using a RecyclerView (doesn't matter if it's using the CardView or not, it's the same for any list item), I create a a click listener for the view item in the Adapter. When the user clicks the item/cardview, I dispatch an item click event. It's your choice on how you respond - you can use a standard callback interface (and pass in your listener when you create the adapter) or use something like EventBus.
Here's an example of the code you would add to your adapter class:
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(itemLayout, parent, false);
view.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
itemClick(view);
}
});
return new ViewHolder(view);
}
private void itemClick(View view) {
//Handle item event here
//EventBus.getDefault().post(new ItemSelectedEvent(/*send apprpopriate data*/));
}
I'm trying to send values from a RecyclerView Item with X position, to other activity which displays those values, for example, in my RecyclerView my X item, has an Image, a Title and a Subtitle; and I want onClick to be displayed in other activity that Image, Title and Subtitle. By that way for the rest of my items.
I think it should be done with putExtra but I can´t get it.
Here is my Adapter with ViewHolder:
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.myViewHolder> {
private LayoutInflater inflater;
private List<Data> info = Collections.emptyList();
private Context context;
public MyAdapter (Context context, List<Data> info){
this.context=context;
inflater = LayoutInflater.from(context);
this.info = info;
}
#Override
public myViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.recycler_item, parent, false);
myViewHolder holder = new myViewHolder(view);
return holder;
}
#Override
public void onBindViewHolder(myViewHolder holder, int position) {
Data current = info.get(position);
holder.title.setText(current.title);;
holder.subtitle.setText(current.subtitle);
holder.image.setImageResource(current.imagenId);
}
#Override
public int getItemCount() {
return info.size();
}
class myViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
ImageView image;
TextView title;
TextView subtitle;
public myViewHolder(View itemView) {
super(itemView);
image = (ImageView) itemView.findViewById(R.id.Image1);
title = (TextView) itemView.findViewById(R.id.TextTitle);
subtitle = (TextView) itemView.findViewById(R.id.TextSubTitle);
itemView.setOnClickListener(this);
}
#Override
public void onClick(View view) {
Intent intent = new Intent(context,ItemSelection.class);
context.startActivity(intent);
}
}
}
Here is the activity of my fragment where the RecyclerView is shown:
public class ltfg0 extends Fragment {
private RecyclerView recyclerView;
private MyAdapter adapter;
public ltfg0() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_ltfg0, container, false);
recyclerView = (RecyclerView) view.findViewById(R.id.ltfg0);
adapter = new MyAdapter(getActivity(),getInfo());
recyclerView.setAdapter(adapter);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
return view;
}
public static List<Data> getInfo(){
List<Data> info = new ArrayList<>();
int[] srcs = {R.mipmap.img1, R.mipmap.img2, R.mipmap.img3, R.mipmap.img4};
String[] titles = {"Title 1", "Title 2", "Title 3", "Title 4"};
String[] subtitles = {"Description 1", "Description 2", "Description 3", "Description 4"};
for (int i=0; i<srcs.length && i<titles.length && i<subtitles.length;i++){
Data current = new Data();
current.imagenId = srcs[i];
current.title = titles[i];
current.subtitle = subtitles[i];
info.add(current);
}
return info;
}
}
And my Data class:
public class Data {
public int imagenId;
public String title;
public String subtitle;
}
You can do it like this inside your ViewHolder:
#Override
public void onClick(View view) {
Intent intent = new Intent(context,ItemSelection.class);
Bundle bundle = new Bundle();
bundle.putSerializable("DATA",info.get(getAdapterPosition()));
intent.putExtras(bundle);
context.startActivity(intent);
}
Then retrieve your instance in your Activity#onCreate() via getIntent():
Data data = (Data)getIntent().getExtras().getSerializable("DATA");
//if you have a TextView, for example...
yourTextView.setText(data.getTitle());
Off course, your Data class must implement Serializable:
public class Data implements Serializale { ...