Develop Reference

Android: Pass text from Textview when clicking an Image button inside recycler view

So I have a recycler view with 2 texts and 1 image button. I want to click the image button and then open a new activity and transfering the text from the textViewADV1 to the next activity
My items .xml in my recyclerview consist of the following
<ImageButton
android:id="#+id/imageButton1"
android:clickable="true"
android:onClick="openActivity2"/>
<TextView
android:id="#+id/textViewADV1"
android:text="Line 1"/>
<TextView
android:id="#+id/textViewADV2"
android:text="Line 2"/>
My openActivity2() from Main Activity
public void openActivity2(View view)
{
Intent intentLoadNewActivity = new Intent(AdvancedResults.this,OpenSelectedAdvanced.class);
startActivity(intentLoadNewActivity);
}
I tried doing textViewADV1.getText().toString() but it only reads the text from the first item in the recycler view
My recycler adapter
public class AdvancedAdapter extends RecyclerView.Adapter<AdvancedAdapter.AdvancedViewHolder> {
private ArrayList<AdvancedItem> mAdvancedList;
public String mImage;
public static class AdvancedViewHolder extends RecyclerView.ViewHolder {
public ImageButton mImagebtn;
public TextView mTextView1;
public TextView mTextView2;
public AdvancedViewHolder(View itemView) {
super(itemView);
mImagebtn = itemView.findViewById(R.id.imageButtonADV);
mTextView1 = itemView.findViewById(R.id.textViewADV1);
mTextView2 = itemView.findViewById(R.id.textViewADV2);
}
}
public AdvancedAdapter(ArrayList<AdvancedItem> advancedList) {
mAdvancedList = advancedList;
}
#Override
public AdvancedViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.advanced_item, parent, false);
AdvancedViewHolder evh = new AdvancedViewHolder(v);
return evh;
}
#Override
public void onBindViewHolder(AdvancedViewHolder holder, int position) {
AdvancedItem currentItem = mAdvancedList.get(position);
holder.mTextView1.setText(currentItem.getText1());
holder.mTextView2.setText(currentItem.getText2());
mImage = "www.testImageURL.com";
Picasso.get().load(mImage).into(holder.mImagebtn);
}
#Override
public int getItemCount() {
return mAdvancedList.size();
}
}

First of all pass a context to your adapter when you initialize it:
//in the main activity that you initialize the adapter in
AdvancedAdapter adapter = new AdvancedAdapter(your_list , MainActivity.this);
Now change the constructor of AdvancedAdapter to accept context
public class AdvancedAdapter extends RecyclerView.Adapter<AdvancedAdapter.AdvancedViewHolder> {
private ArrayList<AdvancedItem> mAdvancedList;
private Context context;
.............
//constructor
public AdvancedAdapter(ArrayList<AdvancedItem> advancedList,Context context) {
mAdvancedList = advancedList;
this.context = context;
}
Now in onBindViewHolder in the AdvancedAdapter
#Override
public void onBindViewHolder(AdvancedViewHolder holder, int position) {
AdvancedItem currentItem = mAdvancedList.get(position);
holder.mTextView1.setText(currentItem.getText1());
holder.mTextView2.setText(currentItem.getText2());
mImage = "www.testImageURL.com";
Picasso.get().load(mImage).into(holder.mImagebtn);
//on click image button
hodler.mImagebtn.setOnclickListener(new View.OnClickListener(){
#Override
public void onClick(View view){
Intent intent = new Intent(context , OpenSelectedAdvanced.class);
intent.putExtra("data" , currentItem.getText1());
context.startActivity(intent);
}
});
}
To get the data from OpenSelectedAdvanced activity:
//in oncreate method:
Intent intent = getIntent();
//this is your text view text that came from the clicked image button
String transferedText = intent.getStringExtra("data");

If you have declared your onBindViewHolder() in your adapter class so why are you starting activity from MainActivity. You should add setOnclicklistenr() in onBindViewHolder() to achieve the desired result that you want that is in following way :
public class AdvancedAdapter extends RecyclerView.Adapter<AdvancedAdapter.AdvancedViewHolder> {
private ArrayList<AdvancedItem> mAdvancedList;
//one more thing you have to create Context field so that you can
//you can start the activity from any context (From Any activity)
private Context mContext;
public String mImage;
public static class AdvancedViewHolder extends RecyclerView.ViewHolder {
public ImageButton mImagebtn;
public TextView mTextView1;
public TextView mTextView2;
public AdvancedViewHolder(View itemView) {
super(itemView);
mImagebtn = itemView.findViewById(R.id.imageButtonADV);
mTextView1 = itemView.findViewById(R.id.textViewADV1);
mTextView2 = itemView.findViewById(R.id.textViewADV2);
}
}
public AdvancedAdapter(ArrayList<AdvancedItem> advancedList, Context mContext) {
mAdvancedList = advancedList;
this.mContext = mContext;
}
#Override
public AdvancedViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.advanced_item, parent, false);
AdvancedViewHolder evh = new AdvancedViewHolder(v);
return evh;
}
#Override
public void onBindViewHolder(AdvancedViewHolder holder, int position) {
AdvancedItem currentItem = mAdvancedList.get(position);
holder.mTextView1.setText(currentItem.getText1());
holder.mTextView2.setText(currentItem.getText2());
mImage = "www.testImageURL.com";
holder.mImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// Here You start your activity
Intent intent = new Intent(mContext, Activity2.class);
//you can putExtras here
mContext.startActivity(intent);
});
Picasso.get().load(mImage).into(holder.mImagebtn);
}
#Override
public int getItemCount() {
return mAdvancedList.size();
}
}
Now initialize this adapter in your activity where you implemented recyclerView And Send that arraylist into the parameters of that constructor of your adapter :) if did not understand yet you can try the tutorial on the link given below : https://www.youtube.com/watch?v=bIppSKk9afI

accessing an adapter's data via another adapter

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

Android RecyclerView onClick in different Activity

Everything works well and my onClick in my recyclerView is working in getting the positions of my items, but what my design calls for is to be able to click an item of the recyclerView and open up a new activity (as a popover or pop up). I can achieve this but my problems comes with the information I need to display on the popover. The information comes like this inside the activity (inside a Firebase value call)
attributeList.removeAll(attributeList);
for (DataSnapshot child : dataSnapshot.child("Attribute").getChildren()){
Attribute attribute = child.getValue(Attribute.class);
attribute_list newAttributeList = new attribute_list( attribute.Name + ": " + attribute.Value);
attributeList.add(newAttributeList);
}
attributeAdapter = new attribute_list_adapter(attributeList, getContext());
recyclerAttribute.setAdapter(attributeAdapter);
This works perfectly for displaying the information, but there's more then just a "value" and a "name" associated with the click.
Basically when I select an item, I need to get the position of the item clicked (which I have) and compare it to the position inside attributeList so I can call a Firebase call (or pass the data somehow) to the popover to display values from the "Attribute" class (such as Name, Value, Description, and another list (recyclerView).
My recyclerView:
public class attribute_list_adapter extends RecyclerView.Adapter<attribute_list_adapter.ViewHolder> {
private List<attribute_list> listItems;
private Context context;
public attribute_list_adapter(List<attribute_list> listItems, Context context) {
this.listItems = listItems;
this.context = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.attribute_list, parent, false);
return new ViewHolder(v);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
attribute_list listItem = listItems.get(position);
holder.txtTitle.setText(listItem.getTxtTitle());
}
#Override
public int getItemCount() {
return listItems.size();
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public TextView txtTitle;
public ViewHolder(View itemView) {
super(itemView);
itemView.setOnClickListener(this);
txtTitle = (TextView) itemView.findViewById(R.id.txtTitle);
}
#Override
public void onClick(View v) {
}
}
}

This is example:
public class attribute_list_adapter extends RecyclerView.Adapter<attribute_list_adapter.ViewHolder> {
private List<attribute_list> listItems;
private Context context;
public attribute_list_adapter(List<attribute_list> listItems, Context context) {
this.listItems = listItems;
this.context = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.attribute_list, parent, false);
return new ViewHolder(v);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.itemView.setOnClickListener(new View.onClickListener() {
#Override
public void onClick(View v) {
onItemClickListener.onItemClick(position);
}
});
}
#Override
public int getItemCount() {
return listItems.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
TextView txtberita;
ImageView imgberita;
TextView txtnama;
public ViewHolder(View itemView) {
super(itemView);
txtnama = (TextView) itemView.findViewById(R.id.txtnama);
txtberita = (TextView) itemView.findViewById(R.id.txtberita);
imgberita = (ImageView) itemView.findViewById(R.id.imgberita);
}
}
public void setOnItemClickListener(OnItemClickListener onItemClickListener){
this.onItemClickListener = onItemClickListener;
}
OnItemClickListener onItemClickListener;
public interface OnItemClickListener{
void onItemClick(int position);
}
}
your Activity. in Oncreate()
public class TestActivity extends AppCompatActivity implements attribute_list_adapter.OnItemClickListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
attribute_list_adapter adapter = new attribute_list_adapter(listItems, this);
adapter.setOnItemClickListener(this);
}
#Override
public void onItemClick(int position) {
// code here
}
}

Create an interface something like
public interface OnSingleItemClickListener{
void onSingleItemClick(int position);
}
Then implement it on your ViewHolder like this
public class ViewHolder extends RecyclerView.ViewHolder implements OnSingleItemClickListener {
public ViewHolder(View itemView) {
super(itemView);
}
#Override
void onSingleItemClick(int position){
if(listItems.get(position) == listItems.get(getAdapterPosition)){
// TODO do something here
}
}
now on your OnBindViewHolder inside your adapter you must do this.
holder.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view) {
holder.onSingleItemClick(position);
}
}):

How can I pass the data from view to another activity?

I have used CardView inside a RecyclerView in horizontal manner. Now what I want to do is, when user click on a card then the data which I have putted into the intent with the help of putExtra function should be passed to the next activity.
Here is the code
public class SectionListDataAdapter extends RecyclerView.Adapter<SectionListDataAdapter.SingleItemRowHolder> {
private List<Section> itemsList;
private Context mContext;
public SectionListDataAdapter(Context context, List<Section> itemsList) {
this.itemsList = itemsList;
this.mContext = context;
}
#Override
public SingleItemRowHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_single_card, null);
SingleItemRowHolder mh = new SingleItemRowHolder(v);
return mh;
}
#Override
public void onBindViewHolder(SingleItemRowHolder holder, int i) {
Section singleItem = itemsList.get(i);
holder.tvTitle.setText(singleItem.getName());
holder.tvAuthor.setText(singleItem.getAuthorname());
holder.tvPremium.setText(singleItem.getPremium());
Glide.with(mContext)
.load(singleItem.getImage()
.into(holder.itemImage);
}
#Override
public int getItemCount() {
return (null != itemsList ? itemsList.size() : 0);
}
public class SingleItemRowHolder extends RecyclerView.ViewHolder {
protected TextView tvTitle, tvAuthor, tvPremium;
protected ImageView itemImage;
public SingleItemRowHolder(final View view) {
super(view);
this.tvTitle = (TextView) view.findViewById(R.id.tvTitle1);
this.tvAuthor = (TextView) view.findViewById(R.id.tvTitle2);
this.tvPremium = (TextView) view.findViewById(R.id.txtSubText1);
this.itemImage = (ImageView) view.findViewById(R.id.itemImage);
view.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(v.getContext(), BooksDescription.class);
intent.putExtra("id", NavigationDrawer.ID.get());
mContext.startActivity(intent);
}
});
}
}
}
Here in the line intent.putExtra("id", NavigationDrawer.ID); NavigationDrawe.ID having 20 integer data. Now which function should I use to get the data of only those card which is clicked.

Get the internal details of the items in recycler view if the items are shuffeled

I have a recycler view, which consists of list. The items in the list have their own details like this (each item will have image, id, name, description), and the items are shuffeled, not in order.
Example : recyclerview item position = 0, list item id= 7.
recyclerview item position = 1, list item id= 5.
recyclerview item position = 2, list item id= 12.
So i need to get the list item id on recycler on click. If i click on recyclerview position = 0, If i have to get the item id as 7. So that i can work on that furthur based on that id.
My example code is
recommendedrecyclerView=(RecyclerView)view.findViewById(R.id.recommended_recycler_view);
recommendedrecyclerView.setNestedScrollingEnabled(false);
recommendedrecyclerView.setLayoutManager(new LinearLayoutManager(getActivity(),OrientationHelper.VERTICAL,true));
recommendedrecyclerView.setItemAnimator(new DefaultItemAnimator());
I am getting data from server and setting it to adapter
setrecommendedAppsContent(response.body().getData());
public void setrecommendedAppsContent(List<FeaturedAppsData> data){
if (data!=null&&data.size()>0) {
recommendedAdapter = new RecommendedAdapter(mCurrentContext, data);
recommendedrecyclerView.setAdapter(recommendedAdapter);
recommendedAdapter.setClickListener(this);
}
}
This is my adapter class
public class RecommendedAdapter extends RecyclerView.Adapter<RecommendedAdapter.ItemViewHolder> {
private LayoutInflater inflater = null;
private Context context;
private List<FeaturedAppsData> itemsData;
private ClickListener clicklistener = null;
public TextView recommendedAppTitle,recommendedAppCategory,recommendedAppDescription;
public ImageView recommendedAppIcon;
Button recommendedBtn;
String appId;
public void setClickListener(ClickListener clickListener) {
this.clicklistener = clickListener;
}
public RecommendedAdapter(Context context, List<FeaturedAppsData> itemsData) {
this.context = context;
this.itemsData = itemsData;
}
#Override
public void onBindViewHolder(ItemViewHolder holder, int position) {
holder.recommendedAppTitle.setText(itemsData.get(position).getName());
holder.recommendedAppCategory.setText(itemsData.get(position).getApp_description());
holder.recommendedAppDescription.setText(itemsData.get(position).getOffer_description());
holder.recommendedAppBtn.setText(itemsData.get(position).getButton_text());
String imageUrl = String.valueOf(itemsData.get(position).getImage().getUrl());
Glide.with(context).load(ApiConstant.ApiBaseUrl + imageUrl).into(recommendedAppIcon);
appId=itemsData.get(position).getId();
}
#Override
public int getItemCount() {
int size = 0;
if (itemsData != null && itemsData.size() > 0) {
size = itemsData.size();
}
return size;
}
public class ItemViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public TextView recommendedAppTitle,recommendedAppCategory,recommendedAppDescription,offerDescription,offerDetailDescription,rewardDetail;
public ImageView recommendedAppIcon;
public Button recommendedAppBtn;
public ArrayList<FeaturedAppsData> dataItems;
private Context context;
public ItemViewHolder(Context context, View itemView, int viewType) {
super(itemView);
this.context = context;
itemView.setOnClickListener(this);
recommendedAppTitle = (TextView) itemView.findViewById(R.id.recommended_app_title);
recommendedAppCategory = (TextView) itemView.findViewById(R.id.recommended_app_category);
recommendedAppDescription = (TextView) itemView.findViewById(R.id.recommended_app_description);
recommendedAppIcon = (ImageView) itemView.findViewById(R.id.recommended_app_icon);
recommendedAppBtn=(Button)itemView.findViewById(R.id.recommended_app_card_btn);
}
#Override
public void onClick(View v) {
if (clicklistener != null) {
clicklistener.itemClicked(v, getAdapterPosition());
}
}
}
#Override
public ItemViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = null;
inflater = LayoutInflater.from(context);
view = inflater.inflate(R.layout.recommended_item_layout, parent, false);
recommendedAppIcon=(ImageView)view.findViewById(R.id.recommended_app_icon);
return new ItemViewHolder(context, view, viewType);
}
}
I am not sure of the Onclick method. So please suggest me as required along with Onclick event.

The setOnClickListener inside the ViewHolder is a good way.
Considering your current solution, the easiest way is to change the ClickListener interface, put the data inside the Holder during onBindViewHolder and then pass it to the listener during onClick. Like this:
Change the view holder fields to:
public class ItemViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public TextView recommendedAppTitle,recommendedAppCategory,recommendedAppDescription,offerDescription,offerDetailDescription,rewardDetail;
public ImageView recommendedAppIcon;
public Button recommendedAppBtn;
public FeaturedAppsData data; // <<< ADD THIS
// remove that u don't need public ArrayList<FeaturedAppsData> dataItems;
// remove that u don't need private Context context;
... the rest of your holder
then inside onBindViewHolder
#Override
public void onBindViewHolder(ItemViewHolder holder, int position) {
holder.data = itemsData.get(position);
... the rest on bind
then inside onClick, inside the holder:
#Override
public void onClick(View v) {
if (clicklistener != null) {
clicklistener.itemClicked(v, data.getId());
}
}