I've got a RecyclerView which is loading the content of my String arrays which works fine, however I want to open a new activity depending on which view they have pressed.
What I have done is created an array called classes like so:
<array name="classes">
<item>ClassOne</item>
<item>ClassTwo</item>
<item>ClassThree</item>
<item>ClassFour</item>
</array>
These are stored in an array, and passed to my MainActivityList adapter below:
String[] classes = resource.getStringArray(R.array.classes);
MainActivityList adapter = new MainActivityList(titles,content, images, classes);
recyclerView.setAdapter(adapter);
I've managed to add the OnClickListener to the ViewHolder and output what class is assigned to each view to the log, however I cannot figure out or get working, how to launch another activity.
The class name would be something like ClassOne.class for example
public class MainActivityList extends RecyclerView.Adapter<MainActivityList.ViewHolder> {
private String[] mTitles;
private String[] mContent;
private String[] mClasses;
private TypedArray mImages;
private Context context;
public MainActivityList(String[] titles, String[] content, TypedArray images, String[] classes) {
this.mTitles = titles;
this.mContent = content;
this.mImages = images;
this.mClasses = classes;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup,int i) {
final View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.activity_main_card, viewGroup, false);
ViewHolder vh = new ViewHolder(v);
v.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
ViewHolder vh = (ViewHolder)v.getTag();
Log.v("DEBUG", "Clicked" + vh.classes);
}
});
return vh;
}
public void onBindViewHolder(ViewHolder holder, int position) {
holder.titleView.setText(mTitles[position]);
holder.contentView.setText(mContent[position]);
holder.imageView.setImageDrawable(mImages.getDrawable(position));
holder.classes = mClasses[position];
}
public class ViewHolder extends RecyclerView.ViewHolder {
public TextView titleView;
public TextView contentView;
public ImageView imageView;
public String classes;
public ViewHolder(View v) {
super(v);
titleView = (TextView) v.findViewById(R.id.card_title);
contentView = (TextView) v.findViewById(R.id.card_content);
imageView = (ImageView)v.findViewById(R.id.card_image);
v.setTag(this);
}
}
#Override
public int getItemCount() {
return mTitles.length;
}
}
Intent intent = new Intent(viewObject.getContext(),ActivityName.class);
viewObject.getContext().startActivity(intent);
I was also looking for a solution, and I found this post:
http://venomvendor.blogspot.sg/2014/07/setting-onitemclicklistener-for-recycler-view.html
By using the OnItemClickListener interface, you should be able to call startActivity in your activity.
adapter.SetOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(View v , int position) {
// This is in an Activity so should be able to start new activity, etc.
}
});
Update: I have tested, the method mentioned in the blog worked for me.
Related
As I'm new to android, I'm struggling to highlight Recyclerview clicked or current item. I have tried some workarounds but nothing helps. Basically I want to highlight selected item even after it is coming back from respective Fragment. Please check my code and help me to get done. Thanks.
public class ContentaAdapter extends RecyclerView.Adapter<ContentaAdapter.MyViewHolder> {
Context context;
ArrayList<String> ItemTitle;
ArrayList<String> ItemSource;
public ContentaAdapter(Context context, ArrayList<String> ItemTitle, ArrayList<String> ItemSource) {
this.context = context;
this.ItemTitle = ItemTitle;
this.ItemSource = ItemSource;
}
#Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.home_items_layout, parent, false);
MyViewHolder vh = new MyViewHolder(v);
return vh;
}
#Override
public void onBindViewHolder(final MyViewHolder holder, final int position) {
holder.ItemTitle.setText(ItemTitle.get(position));
holder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Fragment contentdisplay = new ViewContentFragment();
Bundle bundle=new Bundle();
bundle.putStringArrayList("ItemTitle",ItemTitle);
bundle.putStringArrayList("ItemSource",ItemSource);
bundle.putInt("position",position);
bundle.putInt("ItemCounts",ItemTitle.size());
contentdisplay.setArguments(bundle);
((MainActivity)context).replaceFragment(contentdisplay);
}
});
}
#Override
public int getItemCount() {
return ItemTitle.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder {
TextView ItemTitle;
public MyViewHolder(View itemView) {
super(itemView);
ItemTitle = (TextView) itemView.findViewById(R.id.item_title);
}
}
}
you need to to add isSelected state in to your list item data model and change it onClick.
And when you know state you can change background in ViewHolder
if (isSelected) {
// set selected background here
} else {
// set not selected background here
}
And instead of keeping two lists in adapter you should create one with model ArrayList<DataModel> similar to this:
class DataModel {
String ItemTitle;
String ItemSource;
Boolean isSelected;
}
also you shouldn't pass both list to other fragment, instead take only what you need, for example yourList.get(position);
I am trying to run some code I got from some online tutorial of writing a fragment with a recyclerview in it but I am experiencing some difficulty in opening an activity from the onclick event. My adapter is below
public class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.MyViewHolder> {
private final ArrayList<ItemModel> mArrayList;
private Context mcontext;
ItemAdapter(ArrayList<ItemModel> mArrayList) {
this.mArrayList = mArrayList;
}
#NonNull
#Override
public MyViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
mcontext = parent.getContext();
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.listing_item, parent, false);
return new MyViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull MyViewHolder holder, int position) {
//Glide.with(mcontext).load(mArrayList.get(position).getImage()).into(holder.item_image);
holder.item_name.setText(mArrayList.get(position).getTitle());
holder.item_description.setText(mArrayList.get(position).getDescription());
holder.item_tags.setText(mArrayList.get(position).getTags());
Log.d("MyAdapter", "position: " + position);
}
#Override
public int getItemCount() {
return mArrayList.size();
}
class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private final ImageView item_image;
private final TextView item_name;
private final TextView item_description;
private final TextView item_tags;
private final LinearLayout cardViewLayout;
MyViewHolder(View view) {
super(view);
item_image = view.findViewById(R.id.item_image);
item_name = view.findViewById(R.id.item_name);
item_description = view.findViewById(R.id.item_description);
item_tags = view.findViewById(R.id.item_tags);
cardViewLayout = view.findViewById(R.id.cardViewLayout);
cardViewLayout.setOnClickListener(this);
}
#Override
public void onClick(View view) {
Intent intent = new Intent(mcontext, ItemView.class);
mcontext.startActivity(intent);
}
}
}
When I run the code nothing happens when i click on a item and neither do I see any error in the logcat
Instead, try like this,
ItemAdapter(Context context, ArrayList<ItemModel> mArrayList) {
this.mArrayList = mArrayList;
this.mContext = context;
}
#NonNull
#Override
public MyViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.listing_item, parent, false);
return new MyViewHolder(view);
}
In your fragment, while setting adapter
ItemAdapter itemAdapter=new ItemAdapter(getActivity(),itemList);
You can have a listener sent from the fragment to adapter. Instead of trying to start an activity from the adapter, you can send it back to the fragment to open the activity.
1. Define an interface
public interface MyAdapterListener {
void openActivity(/*any values to be sent*/);
}
2. The fragment should implement MyAdapterListener
3. send the listener object to an adapter in a constructor
ItemAdapter(ArrayList<ItemModel> mArrayList, MyAdapterListener listener) {..
mListener = listener;
}
4. On Adapter - View Holder: in onClick() return to fragment
public void onClick(View view) {
mListener.openActivity(/*any values to be sent*/);
}
I was of the idea that on your application of the adapter in some activity you simply call the activity on the setOnItemClickListener of the adapter
private void loadItemsData() {
RecyclerView itemsRecyclerView = view.findViewById(R.id.posts_recycler_view);
itemsRecyclerView.setHasFixedSize(true);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, false);
itemsRecyclerView.setLayoutManager(layoutManager);
ItemAdapter myadapter = new ItemAdapter(new ArrayList<MyItem>(), getContext());
myadapter.setOnItemClickListener(new ItemAdapter.OnItemClickListener() {
#Override
public void onItemClick(View view, PostItems items) {
ViewItem.passingIntent(getActivity(), items.postid);
}
});
itemsRecyclerView.setAdapter(ListAdapter );
}
then once done that you come to the receiver activity and make way to get the variables being passed on to it
public static void passingIntent(Activity activity, Integer postid){
Intent intent = new Intent(activity, ViewItem.class);
intent.putExtra(MY_ITEM, postid);
activity.startActivity(intent);
}
I have used this approach in one of my apps lately
Try setting your click listener in onBindViewHolder like below
#Override
public void onBindViewHolder(#NonNull MyViewHolder holder, int position) {
//Glide.with(mcontext).load(mArrayList.get(position).getImage()).into(holder.item_image);
holder.item_name.setText(mArrayList.get(position).getTitle());
holder.item_description.setText(mArrayList.get(position).getDescription());
holder.item_tags.setText(mArrayList.get(position).getTags());
holder.setOnClickListener(this) // put this line
Log.d("MyAdapter", "position: " + position);
}
Then of course you will override onClick in adapter rather than viewholder
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'm stuck with this problem: the AdapterPosition never changes, when I click on an item from my recyclerview it's always -1.
public class RecyclerMapAdapter extends RecyclerView.Adapter<RecyclerMapAdapter.ViewHolder> {
Context context;
ArrayList<Features> features;
ImageLoader imageLoader;
public static String TAG = MapsActivity.class.getSimpleName();
public RecyclerMapAdapter(Context context, ArrayList<Features> features) {
this.context = context;
this.features = features;
}
#Override
public RecyclerMapAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.map_row, parent, false);
final RecyclerMapAdapter.ViewHolder viewHolder = new RecyclerMapAdapter.ViewHolder(v);
v.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
ListMapActivity mapsActivity = (ListMapActivity) context;
Intent intent = new Intent(mapsActivity, DescriptionMapActivity.class);
Features feature = features.get(viewHolder.getAdapterPosition());
MyProperties myProperties = feature.getProperties();
intent.putExtra("data", myProperties);
mapsActivity.startActivity(intent);
}
});
return new ViewHolder(v);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
Features feature = features.get(position);
MyProperties myProperties = feature.getProperties();
holder.title_map.setText(myProperties.getName());
imageLoader = ServerImageAdapter.getInstance(context).getImageLoader();
imageLoader.get(myProperties.getImage_url(),
ImageLoader.getImageListener(
holder.iv_map,//Server Image
R.mipmap.ic_launcher,//Before loading server image the default showing image.
android.R.drawable.ic_dialog_alert //Error image if requested image dose not found on server.
)
);
holder.iv_map.setImageUrl(myProperties.getImage_url(), imageLoader);
}
#Override
public int getItemCount() {
return features.size();
}
static class ViewHolder extends RecyclerView.ViewHolder{
public TextView title_map;
public TextView dist;
public NetworkImageView iv_map;
public ViewHolder(View itemView) {
super(itemView);
title_map = (TextView) itemView.findViewById(R.id.tv_map_list);
dist = (TextView) itemView.findViewById(R.id.dist_map);
iv_map = (NetworkImageView) itemView.findViewById(R.id.map_row_image);
}
}
}
To help you understand the context here's how my stuff works:
I'm on a map with markers, I can open new activity by clicking the InfoWindow for each marker, and I also have a menu item which open the recyclerview with all the markers and when I click on an item from the list it should open the same activity as when I clicked on infoWindow.
I have everything except when I click on an item from the list because getAdapterPosition() return -1.
I already use this kind of implementation of recyclerview for something else and it works fine the only difference is one is fragment (which works) and the other is activity(which doesn't).
you were creating a viewHolder, performing operations on it. but at the end, you were sending completely new instance of view holder to RecyclerView
#Override
public RecyclerMapAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.map_row, parent, false);
final RecyclerMapAdapter.ViewHolder viewHolder = new RecyclerMapAdapter.ViewHolder(v);
v.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
ListMapActivity mapsActivity = (ListMapActivity) context;
Intent intent = new Intent(mapsActivity, DescriptionMapActivity.class);
Features feature = features.get(viewHolder.getAdapterPosition());
MyProperties myProperties = feature.getProperties();
intent.putExtra("data", myProperties);
mapsActivity.startActivity(intent);
}
});
return viewHolder;
}
I'm trying to display my recyclerView on MainActivity, but can't seem to do it.
This is my code: (which compiles with no errors)
private RecyclerView recyclerView;
private MyAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = (RecyclerView) this.findViewById(R.id.recycler_view_example);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
adapter = new MyAdapter(this, getData());
recyclerView.setAdapter(adapter);
// Add Code to display recyclerView on Main...
}
// This is not my actual data, just testing it out
public static List<Block> getData() {
List<Block> data = new ArrayList<>();
String[] ids = {"310", "313", "320"};
String[] names = {"name of three ten", "name of three thirteen", "name of three twenty"};
for (int i=0; i<ids.length; i++) {
data.add(new Block(ids[i], names[i]));
}
return data;
}
And myActivity Class:
private final LayoutInflater inflater;
// Data: (information)
List<Block> data = new ArrayList<>();
public MyAdapter(Context context, List<Block> data) {
inflater = LayoutInflater.from(context);
this.data = data;
}
#Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.block, parent, false);
MyViewHolder holder = new MyViewHolder(view);
return holder;
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder h, int position) {
MyViewHolder holder = new MyViewHolder(h.itemView);
Block current = data.get(position);
holder.id.setText(current.getId());
holder.name.setText(current.getName());
}
#Override
public int getItemCount() {
return 0;
}
class MyViewHolder extends RecyclerView.ViewHolder {
TextView id;
TextView name;
Button button;
// Constructor
public MyViewHolder(View itemView) {
super(itemView);
id = (TextView) itemView.findViewById(R.id.the_course_id);
name = (TextView) itemView.findViewById(R.id.course_name);
button = (Button) itemView.findViewById(R.id.click);
}
}
}
All I'm trying to do now is that when I run the emulator, I will see the contents of the recyclerView. But, I've been stuck on this for a while as nothing seems to work.
Mind you I'm a beginner with Android, so forgive me if this is very trivial.
You should return the number of items in your list, within getItemCount as in:
#Override
public int getItemCount() {
return data.size();
}
Ok here you need to change the following: update -
recyclerView.setLayoutManager(new LinearLayoutManager(this));
to
recyclerView.setLayoutManager(new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false));
and in adapter class change:
#Override
public int getItemCount() {
return data.size();
}
thats it. Happy coding :)
Change onBindViewHolder to:
#Override
public void onBindViewHolder(RecyclerView.ViewHolder h, int position) {
Block current = data.get(position);
h.id.setText(current.getId());
h.name.setText(current.getName());
}
also add #SelçukCihan solution to this
EDIT
Also if you want to use your MyViewHolder you have to change the following:
First change class signature:
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder>
and also change the signature for onBindViewHolder:
public void onBindViewHolder(MyViewHolder h, int position)
and finally change the signature of your MyViewHolder class:
static class MyViewHolder extends RecyclerView.ViewHolder