Which is the code to obtain a Horizontal RecyclerView of images? I already have the code for horizontal RecyclerView of Strings. I need to have the same but of Images.
I have to create a RecyclerView of 10 horizontal scrollable imageView.
This is my actual code of 10 horizontal TextViews:
public class HorizontalAdapter extends RecyclerView.Adapter<HorizontalAdapter.HorizontalViewHolder> {
private String[] items;
public HorizontalAdapter(String[] items) {
this.items = items;
}
#Override
public HorizontalViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View view = inflater.inflate(R.layout.item_layout_recycler_view_top_10, parent, false);
return new HorizontalViewHolder(view);
}
#Override
public void onBindViewHolder(HorizontalViewHolder holder, int position) {
holder.text.setText(items[position]);
}
#Override
public int getItemCount() {
return items.length;
}
public class HorizontalViewHolder extends RecyclerView.ViewHolder {
TextView text;
public HorizontalViewHolder(View itemView) {
super(itemView);
text = itemView.findViewById(R.id.text_view_top_10_ricette_titolo_ricetta);
} }
}
and I manage it on a Fragment in this way:
RecyclerView list = (RecyclerView) view.findViewById(R.id.recycler_view_ricette_categorie_primi_top_10);
list.setLayoutManager(new LinearLayoutManager(getActivity(),LinearLayoutManager.HORIZONTAL,false));
list.setAdapter(new HorizontalAdapter(new String[]{"Android","Programming","Java","RecyclerView","Layout"}));
How I have to modify this?
Try this make below changes in your HorizontalAdapter
public class HorizontalAdapter extends RecyclerView.Adapter<HorizontalAdapter.HorizontalViewHolder> {
private int[] items;
public HorizontalAdapter(String[] int) {
this.items = items;
}
#Override
public HorizontalViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View view = inflater.inflate(R.layout.item_layout_recycler_view_top_10, parent, false);
return new HorizontalViewHolder(view);
}
#Override
public void onBindViewHolder(HorizontalViewHolder holder, int position) {
holder.image.setImageResource(items[position]);
}
#Override
public int getItemCount() {
return items.length;
}
public class HorizontalViewHolder extends RecyclerView.ViewHolder {
ImageView image;
public HorizontalViewHolder(View itemView) {
super(itemView);
image = itemView.findViewById(R.id.imageviewid);
} }
}
code for RecyclerView
RecyclerView list = (RecyclerView) view.findViewById(R.id.recycler_view_ricette_categorie_primi_top_10);
list.setLayoutManager(new LinearLayoutManager(getActivity(),LinearLayoutManager.HORIZONTAL,false));
list.setAdapter(new HorizontalAdapter(new int[]{R.mipmap.ic_launcher,R.mipmap.ic_launcher,R.mipmap.ic_launcher,R.mipmap.ic_launcher,R.mipmap.ic_launcher}));
NOTE : Your layout (item_layout_recycler_view_top_10) needs to contain a ImageView instead of a TextView
Instead of a recyclerView full of textViews (R.layout.item_layout_recycler_view_top_10) you want images?
Just create another layout which contains an ImageView instead of a TextView in it and use it accordingly to your current solution.
String array change to image url array or drawable image array create and send to adapter and set into imageview.
Related
I'm trying to get a View position through his view hierarchy.
When I have a RecyclerView, for get the current view position I do:
if(view.getParent() instanceof RecyclerView){
RecyclerView rv = (RecyclerView)view.getParent();
if(rv.getLayoutManager()!=null) {
position = rv.getLayoutManager().getPosition(view);
}
}
But when a ListView or GridView appears, I'm not able to get a Layout Manager to get the position of the view. The idea is to make it in a generic way, without knowing the Custom Adapter the view has.
I have tried to get the position through the ListView and GridView adapter but I dont see any method that do that.
Someone can help me?
Thank you a lot!
Create interface for get position for outside adapter class
here is adapter code:
public class ReportMediaAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private ArrayList<File> reportMediaList = new ArrayList<>();
private Context context;
private int selectedPos = -1;
private OnRemoveImage onRemoveImage;
public ReportMediaAdapter(Context context, ArrayList<File> reportMediaList, OnRemoveImage onRemoveImage) {
this.reportMediaList = reportMediaList;
this.onRemoveImage = onRemoveImage;
this.context = context;
}
**public interface OnRemoveImage {
void onRemove(int pos);
}**
public class MyViewHolder extends RecyclerView.ViewHolder {
private ImageView iv_image, iv_remove;
public MyViewHolder(View itemView) {
super(itemView);
iv_image = itemView.findViewById(R.id.iv_image);
iv_remove = itemView.findViewById(R.id.iv_remove);
}
}
#Override
public int getItemCount() {
return reportMediaList.size()-1;
}
#NonNull
#Override
public RecyclerView.ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.adapter_media, parent, false);
return new MyViewHolder(itemView);
}
#Override
public void onBindViewHolder(#NonNull RecyclerView.ViewHolder holder, int position) {
try {
MyViewHolder menuItemHolder = (MyViewHolder) holder;
CommonMethods.loadImage(context, reportMediaList.get(position), menuItemHolder.iv_image);
menuItemHolder.iv_remove.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
**onRemoveImage.onRemove(position);**
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
}
Here is activity code:
#Override
public void onRemove(int pos) {
// use adapter position
}
I have found a solution:
if(view.getParent() instanceof ViewGroup) {
position = ((ViewGroup)view.getParent()).indexOfChild(view);
}
RecyclerView items not visible
I am using a string array name item test and pass it to String array list, I used the same idea before and was working correctly
listItemsTest = new ArrayList<>(Arrays.asList(itemsTest));
recyclerView = findViewById(R.id.RecycleViewTest);
recycleViewAdapterTest = new RecycleViewAdapterTest(this,listItemsTest);
recyclerView.setAdapter(recycleViewAdapterTest);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
My Adapter
public class RecycleViewAdapterTest extends
RecyclerView.Adapter<RecycleViewAdapterTest.MyViewHolder> {
private ArrayList<String> ListTest;
Context context;
public RecycleViewAdapterTest(Context context, ArrayList<String> listTest) {
this.ListTest = listTest;
this.context = context;
}
#NonNull
#Override
public RecycleViewAdapterTest.MyViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.test_list,parent,false);
MyViewHolder holder = new MyViewHolder(view);
return holder;
}
#Override
public void onBindViewHolder(#NonNull RecycleViewAdapterTest.MyViewHolder holder, int position) {
}
#Override
public int getItemCount() {
return ListTest.size();
}
public static class MyViewHolder extends RecyclerView.ViewHolder {
LinearLayout linearLayout;
TextView textView;
public MyViewHolder(#NonNull View itemView) {
super(itemView);
linearLayout = itemView.findViewById(R.id.LLTest);
textView = itemView.findViewById(R.id.textViewTest);
}
}
#Override
public void onBindViewHolder(#NonNull RecycleViewAdapterTest.MyViewHolder holder, int position) {
String value = this.ListTest.get(position);
holder.textView.setText(value);// Try to make the textView public
}
because you need to set list value to viewholder's textview in OnBindViewHolder. :(
I have a recyclerview in ShoppingCartActivity and a button in ProductDetailActivity. I want to send some data to ShoppingCartActivity when a button clicked in ProductDetailActivity and display them in recyclerview item that creates dynamically in ShoppingCartActivity.
I added addData method to recyclerview Adapter but it doesn't work and app crashes.
shop_btn = findViewById(R.id.add_to_shopping_cart);
shop_btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent addToCart = new Intent(ProductDetailActivity.this, ShoppingCartActivity.class);
startActivity(addToCart);
}
});
//HERE IS MY RECYCLERVIEW ADAPTER
public class RecyclerViewAdapter_ShoppingCart extends RecyclerView.Adapter<RecyclerViewAdapter_ShoppingCart.MyViewHolder> {
private Context context;
List<CartItems> cartItemsList;
public RecyclerViewAdapter_ShoppingCart(Context context, List<CartItems> cartItemsList) {
this.context = context;
this.cartItemsList = cartItemsList;
}
#NonNull
#Override
public MyViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view;
LayoutInflater layoutInflater = LayoutInflater.from(context);
view = layoutInflater.inflate(R.layout.card_cart, parent, false);
return new MyViewHolder(view);
}
#NonNull
#Override
public void onBindViewHolder(#NonNull final MyViewHolder holder, final int position) {
holder.cart_title.setText(cartItemsList.get(position).getTitle());
holder.cart_price.setText(cartItemsList.get(position).getPrice());
Picasso.get().load(cartItemsList.get(position).getImageUrl()).into(holder.cart_img);
}
#Override
public int getItemCount() {
return cartItemsList.size();
}
public static class MyViewHolder extends RecyclerView.ViewHolder {
TextView cart_title, cart_price;
ImageView cart_img;
public MyViewHolder(View itemView) {
super(itemView);
cart_title = itemView.findViewById(R.id.cart_title);
cart_price = itemView.findViewById(R.id.cart_price);
//cart_delete = itemView.findViewById(R.id.cart_delete);
cart_img = itemView.findViewById(R.id.cart_image);
}
}
public void addItem(List<CartItems> cartItems) {
CartItems newValue = new CartItems();
newValue.setTitle("123");
newValue.setPrice("123");
newValue.setImageUrl("");
cartItems.add(newValue);
notifyDataSetChanged();
}
}
My goal is adding recyclerview items dynamically to ShoppingCartActivity when a button clicked in ProductDetailActivity but app crashes.
I've implementend a RecyclerView as follow
The Adapter with the Holder
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyHolder> {
#NonNull
#Override
public MyHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.indovinelloelement,parent,false);
MyHolder holder = new MyHolder(view);
return holder;
}
#Override
public void onBindViewHolder(#NonNull MyHolder holder, int position) {
holder.category.setText(data.get(position).getCategory());
holder.difficulty.setText(""+data.get(position).getDifficulty());
holder.title.setText(data.get(position).getTitle());
holder.score.setText(""+data.get(position).getScore());
if(data.get(position).isLocked())
holder.setLocked();
else
holder.setUnlocked();
}
public DataGestour.Indovinello getIndovinello(int pos){
return data.get(pos);
}
#Override
public int getItemCount() {
return data.size();
}
public class MyHolder extends RecyclerView.ViewHolder {
public TextView category,score,difficulty,title;
private ImageView lock_state;
public MyHolder(View itemView) {
super(itemView);
category = (TextView)itemView.findViewById(R.id.categoria);
score = (TextView)itemView.findViewById(R.id.punteggio);
difficulty = (TextView) itemView.findViewById(R.id.difficolta);
title = (TextView)itemView.findViewById(R.id.titolo);
lock_state = (ImageView) itemView.findViewById(R.id.lock_state);
}
public void setLocked(){
lock_state.setImageResource(R.drawable.ic_lock_outline_black_24dp);
}
public void setUnlocked(){
lock_state.setImageResource(R.drawable.ic_lock_open_black_24dp);
}
}
ArrayList<DataGestour.Indovinello> data;
Context context;
public MyAdapter(Context context, ArrayList<DataGestour.Indovinello> list){
this.context = context;
this.data = list;
}
}
and the RecyclerView:
rc = (RecyclerView)root_view.findViewById(R.id.lista_domande);
rc.setHasFixedSize(true);
LinearLayoutManager ly = new LinearLayoutManager(getContext());
ly.setOrientation(LinearLayoutManager.VERTICAL);
rc.setLayoutManager(ly);
try{
gestour = new DataGestour(getContext());
}catch (IllegalStateException e){
Log.e("DataManager",e.getMessage());
};
adapter = new MyAdapter(getContext(),gestour.getAllDatas());
rc.setAdapter(adapter);
adapter.notifyDataSetChanged();
where DataGestoure is a class that manipulates some data from a
database and store them in a ArrayList (DataGestour.getAllDatas is the method to return the data under a ArrayList)
The problem start only if the ArrayList contains more then 3 items becouse the RecyclerView doen't show them despite the fact that the adapter holds all the data in ArrayList< DataGestour.Indovinello > data
Well, you need a little more order in your code, since it is not properly structured, by default the RecyclerView has its Scrolleable view unless in the XML this attribute is removed, well I recommend that you use this code in your adapter and use a model to save the information you get from your BD, that is the correct way to work to keep everything in order and it is easier to work it, once this is done you can use this code perfectly that I am sure will work, remember to only pass information to my Model that in my case calls it "Model" and with this the error of your data load will be solved. It is also advisable to use a List <> for these cases since the Arrays <> tend to have errors when you manipulate the data and more if you do it the way you present the code.
private List<Model> mDataList;
public MyAdapter(Context context){
this.context = context;
this.mDataList = new ArrayList<>();
}
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyHolder> {
#NonNull
#Override
public MyHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.indovinelloelement,parent,false);
return new MyHolder(view);
}
#Override
public void onBindViewHolder(#NonNull MyHolder holder, int position) {
MyHolder holder = (MyHolder) MyHolder;
hoder.bind(mDataList.getPosition(position));
}
#Override
public int getItemCount() {
return mDataList.size();
}
public void setData(List<Model> list) {
mDataList.clear();
mDataList.addAll(list);
notifyDataSetChanged();
}
public class MyHolder extends RecyclerView.ViewHolder {
TextView category;
category = (TextView)itemView.findViewById(R.id.categoria);
TextView score;
score = (TextView)itemView.findViewById(R.id.punteggio);
TextView difficulty;
difficulty = (TextView) itemView.findViewById(R.id.difficolta);
TextView title;
title = (TextView)itemView.findViewById(R.id.titolo);
ImageView lock_state;
lock_state = (ImageView) itemView.findViewById(R.id.lock_state);
public MyHolder(View itemView) {
super(itemView);
}
protected void bind(Model model){
category.setText(model.getCategory());
score.setText(model.getScore());
difficulty.setText(model.getDifficulty());
title.setText(model.getTitle());
if(model.isLocked()){
lock_state.setImageResource(R.drawable.ic_lock_outline_black_24dp);
} else {
lock_state.setImageResource(R.drawable.ic_lock_open_black_24dp);
}
}
}
}
And for your class that contains the RecyclerView use the code as follows.
RecyclerView mRecyclerView;
mRecyclerView = (RecyclerView)root_view.findViewById(R.id.lista_domande);
private MyAdapter mAdapter;
private List<Model> mDataList;
private DataGestour gestour;
private void setupRecyclerView(){
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext());
linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
mRecyclerView.setHasFixedSize(true);
mRecyclerView.setLayoutManager(linearLayoutManager);
mAdapter = new MyAdapter(getContext());
mRecyclerView.setAdapter(mAdapter);
mRecyclerView.setData(mDataList);
}
private void getDataDB(){
mDataList.add(gestour.getAllDatas);
}
hi i have a problem friends i am passing the text and the images from the Json using volley library and recycler view with horizontal orientation everything working fine but i am getting more gap in between the images because of that navigation drawer also effecting this the image of the home screen
Here is navigation drawer
This adapter featured products
public class FeaturedAdapter extends RecyclerView.Adapter<ViewHolder> {
ImageLoader imageLoader = AppController.getInstance().getImageLoader();
private Context context;
private List<Data> fpdata;
public FeaturedAdapter(Context context, List<Data> fpdata) {
this.context = context;
this.fpdata = fpdata;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View fpds = LayoutInflater.from(parent.getContext()).inflate(R.layout.singlefeatured, parent,false);
ViewHolder viewHolder = new ViewHolder(fpds);
return viewHolder;
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
Data feature=fpdata.get(position);
holder.netfp.setImageUrl(feature.getFpimage(),imageLoader);
holder.title.setText(feature.getTitle());
holder.price.setText(feature.getPrice());
}
#Override
public int getItemCount() {
return fpdata.size();
}
}