I am using the method from RecyclerView onClick to perform on item click method in recyclerview. But the problem is how to handle child button in the recyclerview? I have perform onclick method in the adapter but still not work, It always perform recyclerview onitemclicklistener first then only perform onclick method from adapter. How to handle it properly?
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener {
private OnItemClickListener mListener;
public interface OnItemClickListener {
public void onItemClick(View view, int position);
public void onLongItemClick(View view, int position);
}
GestureDetector mGestureDetector;
public RecyclerItemClickListener(Context context, final RecyclerView recyclerView, OnItemClickListener listener) {
mListener = listener;
mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
#Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && mListener != null) {
mListener.onLongItemClick(child, recyclerView.getChildAdapterPosition(child));
}
}
});
}
#Override public boolean onInterceptTouchEvent(RecyclerView view, MotionEvent e) {
View childView = view.findChildViewUnder(e.getX(), e.getY());
if (childView != null && mListener != null && mGestureDetector.onTouchEvent(e)) {
mListener.onItemClick(childView, view.getChildAdapterPosition(childView));
return true;
}
return false;
}
#Override public void onTouchEvent(RecyclerView view, MotionEvent motionEvent) { }
#Override
public void onRequestDisallowInterceptTouchEvent (boolean disallowIntercept){}
}
I have implement OnClick in the Adapter Section... Refer to the below code of my Adapter Class
public class DataAdapter extends RecyclerView.Adapter<DataAdapter.ViewHolder> {
private Context context;
List<Video_Details> video;
public DataAdapter(List<Video_Details> video, Context context) {
super();
this.context = context;
this.video = video;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.card_row, parent, false);
ViewHolder viewHolder = new ViewHolder(v);
return viewHolder;
}
#Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
final Video_Details videoDetails = video.get(position);
String url;
final String VideoID;
holder.title.setText(video.get(position).getTitle());
VideoID= video.get(position).getV_id();
url = video.get(position).getThumb();
Glide.with(context)
.load(url)
.override(150,70)
.into(holder.thumb);
//viewHolder.thumb.setText(android.get(i).getVer());
// viewHolder.tv_api_level.setText(android.get(i).getApi());
holder.vm.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(v.getContext(), "You Clicked"+video.get(position).getV_id(), Toast.LENGTH_SHORT).show();
Intent intent = new Intent(v.getContext(),Play_Video.class);
intent.putExtra("VideoId",(video.get(position).getV_id()));
intent.putExtra("Title",(video.get(position).getTitle()));
v.getContext().startActivity(intent);
}
}
);
}
#Override
public int getItemCount() {
return video.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
public TextView title;
public ImageView thumb;
public String videoid;
public View vm;
public ViewHolder(View view) {
super(view);
vm = view;
title = (TextView)view.findViewById(R.id.title);
thumb = (ImageView) view.findViewById(R.id.thumb);
//tv_version = (TextView)view.findViewById(R.id.tv_version);
//tv_api_level = (TextView)view.findViewById(R.id.tv_api_level);
}
}
}
Related
I want to implement a recycler view click event. I intended to have an event when I clicked tvRoomNum. But error 'TextView.setOnClickListener(android.view.View$OnClickListener)' on a null object reference' occurs. So I notice that tvRoomNum is null object and attempt to use 'findViewById'. But the function is not recognized. How can I solve the problem?
public class RoomAdapter extends RecyclerView.Adapter<RoomAdapter.CustomViewHolder> {
private Context context;
private ArrayList<RoomData> rooms;
public ArrayList<StudnetInRoomData> students;
private LayoutInflater inflater;
private RoomData room;
View view;
public RoomAdapter(Context context, ArrayList<RoomData> rooms) {
this.context = context;
this.rooms = rooms;
this.inflater = LayoutInflater.from(context);
students = new ArrayList<>();
}
#Override
public CustomViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
view = inflater.inflate(R.layout.single_room, parent, false);
return new CustomViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull CustomViewHolder holder, int position) {
room = rooms.get(position);
holder.tvRoomNum.setText(String.valueOf(room.roomNum));
}
#Override
public int getItemCount() {
return rooms.size();
}
public class CustomViewHolder extends RecyclerView.ViewHolder {
public TextView tvRoomNum;
public CustomViewHolder(View itemView) {
super(itemView);
tvRoomNum.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view) {
Intent intent = new Intent(view.getContext(), PlusStudentActivity.class);
intent.putExtra("studentList", room.students);
context.startActivity(intent);
}
});
}
}
}
The code below is the adapter of the recycler view that implements the recycler view. This is a dual recircular view structure.
public class FloorAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> implements OnFloorItemClickListener {
OnFloorItemClickListener listener;
static public ArrayList<FloorData> floors;
private Context context;
private LayoutInflater layoutInflater;
private OnItemClickListener mListener = null;
public FloorAdapter(ArrayList<FloorData> floors, Context context) {
this.floors = floors;
this.context = context;
this.layoutInflater = LayoutInflater.from(context);
}
public interface OnItemClickListener{
void onItemClick(View v, int pos);
}
public void setOnItemClickListener(OnItemClickListener listener) {
this.mListener = listener ;
}
#Override
public RecyclerView.ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = layoutInflater.inflate(R.layout.signle_floor, parent, false);
return new GridViewHolder(view);
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
((GridViewHolder)holder).recyclerView.setAdapter(new RoomAdapter(context, floors.get(position).rooms));
((GridViewHolder)holder).recyclerView.setLayoutManager(new GridLayoutManager(context, 5));
((GridViewHolder)holder).recyclerView.setHasFixedSize(true);
((GridViewHolder)holder).tvFloorNum.setText(String.valueOf(floors.get(position).floorNum));
}
#Override
public int getItemCount() {
return floors.size();
}
#Override public void onItemClick(RecyclerView.ViewHolder holder, View view, int position) {
if(listener != null){
listener.onItemClick(holder,view,position);
}
}
#Override
public int getItemViewType(int position) {
return floors.get(position).id;
}
public class GridViewHolder extends RecyclerView.ViewHolder {
RecyclerView recyclerView;
TextView tvFloorNum;
Button btnPlusRoom;
public GridViewHolder(View itemView) {
super(itemView);
recyclerView = itemView.findViewById(R.id.rvRooms);
tvFloorNum = itemView.findViewById(R.id.tvFloorNum);
btnPlusRoom = (Button)itemView.findViewById(R.id.btnPlusRoom);
btnPlusRoom.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v)
{
int pos = getAdapterPosition();
if (pos != RecyclerView.NO_POSITION)
{
if(mListener != null){
mListener.onItemClick(v, pos);
}
}
}
});
}
}
}
Your TextView is null, because you are missing the findViewById():
You find the Id on a View, in this case, it is the itemView
The function was not recognised because you would've just called findViewById() & ViewHolder does not have that method,
You should've called itemView.findViewById() instead.
Try this:
public class CustomViewHolder extends RecyclerView.ViewHolder {
public TextView tvRoomNum;
public CustomViewHolder(View itemView) {
super(itemView);
tvRoomNum = itemView.findViewById(R.id.your_textview_id) // THIS
tvRoomNum.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view) {
Intent intent = new Intent(view.getContext(), PlusStudentActivity.class);
intent.putExtra("studentList", room.students);
context.startActivity(intent);
}
});
}
}
There is a list of pictures made through RecyclerView. When you click on a picture while it is being transferred to the next activity, a ProgressBar should be displayed. When there is a return to the activity of the image selection, the ProgressBar also remains visible, although it must be hidden.
As I did below, the progress bar becomes invisible only in the first image, but in the rest it does not work. I can’t understand why
in my project there are such classes as:
interface
public interface ImageOnC {
void onClick(int position);
}
ImageViewHolder
public class ImageViewHolder extends RecyclerView.ViewHolder {
public ImageView imageView;
private ImageOnC imageOnC;
public ImageButton imageButton;
public ProgressBar progressBar;
public void setImageOnC(ImageOnC imageOnC) {
this.imageOnC = imageOnC;
}
public ImageViewHolder(#NonNull final View itemView) {
super(itemView);
imageView = itemView.findViewById(R.id.image_outline);
progressBar = itemView.findViewById(R.id.progr);
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
imageOnC.onClick(getAdapterPosition());
progressBar.setVisibility(View.VISIBLE);
}
});
}
}
ImageAdabter
public class ImageAdabter extends RecyclerView.Adapter<ImageViewHolder> {
private Context mContext;
private List<Integer> listImages;
public ImageAdabter(Context mContext){
this.mContext = mContext;
this.listImages = getImages();
}
private List<Integer> getImages() {
List<Integer> results = new ArrayList<>();
results.add(R.drawable.outline1);
results.add(R.drawable.outline2);
results.add(R.drawable.outline3);
results.add(R.drawable.outline4);
results.add(R.drawable.outline5);
results.add(R.drawable.outline6);
results.add(R.drawable.outline7);
results.add(R.drawable.outline8);
results.add(R.drawable.outline9);
results.add(R.drawable.outline10);
return results;
}
#NonNull
#Override
public ImageViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(mContext).inflate(R.layout.item_images,parent,false);
return new ImageViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull final ImageViewHolder holder, final int position) {
holder.imageView.setImageResource( listImages.get(position));
holder.setImageOnC(new ImageOnC() {
#Override
public void onClick(int position) {
Common.PICTURE_SELECTED = listImages.get(position);
mContext.startActivity(new Intent(mContext, Colorful.class));
}
});
#Override
public void onBindViewHolder(#NonNull ImageViewHolder holder, int position, List<Object>payload){
//if so, then the progress bar only works for the first image in recyclerview
if(!payload.isEmpty()){
if(payload.get(position) instanceof Integer)
holder.progressBar.setVisibility(View.GONE);
}
else super.onBindViewHolder(holder, position, payload);
}
#Override
public int getItemCount() {
return listImages.size();
}
}
I add this to activity
private void initView() {
recyclerView = findViewById(R.id.recycle_view_images);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
adabter = new ImageAdabter(this);
recyclerView.setAdapter(adabter);
}
#Override
public void onResume() {
super.onResume();
if (adabter != null) {
adabter.notifyItemChanged(position, position);
}
}
in xml file use Progress bar visibility gone
I want to make a dashboard in android studio.I use two xml for making dashboard main_activity and list_item activity.In the coding session i used model class adapter and also main class.
public class MainActivity extends AppCompatActivity {
ArrayList<DashModel> dashModelArrayList;
DashAdapter dashAdapter;
private RecyclerView recyclerView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = findViewById(R.id.rv1);
dashModelArrayList = new ArrayList<>();
String heads[] = {"Jobs", "My Profile", "Messages", "Applied Jobs", "Resume", "Settings"};
String subs[] = {"12 new jobs found", "75% complete", "2 new messages", "3 applies jobs", "Edit resume", "Set preferences"};
int images[] = {R.drawable.find_jobs, R.drawable.profile, R.drawable.messages, R.drawable.applied_jobs,
R.drawable.resume, R.drawable.settings};
for (int count = 0; count < heads.length; count++) {
DashModel dashModel = new DashModel();
dashModel.setHead(heads[count]);
dashModel.setSub(subs[count]);
dashModel.setImage(images[count]);
dashModelArrayList.add(dashModel);
//this should be retrieved in our adapter
}
recyclerView.setLayoutManager(new GridLayoutManager(getApplicationContext(), 2));
dashAdapter = new DashAdapter(dashModelArrayList);
recyclerView.setHasFixedSize(true);
recyclerView.setAdapter(dashAdapter);
}}
Adapter class :
public class DashAdapter extends RecyclerView.Adapter<DashAdapter.ViewHolder> {
ArrayList<DashModel> dashModelArrayList;
public DashAdapter(ArrayList<DashModel> dashModelArrayList) {
this.dashModelArrayList = dashModelArrayList;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item,parent,false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
String ret_head = dashModelArrayList.get(position).getHead();
holder.setheader(ret_head);
String ret_sub = dashModelArrayList.get(position).getSub();
holder.set_sub(ret_sub);
int ret_image = dashModelArrayList.get(position).getImage();
holder.set_image(ret_image);
}
#Override
public int getItemCount() {
return dashModelArrayList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
TextView header,sub_header;
ImageView images;
View myView;
public ViewHolder(View itemView) {
super(itemView);
myView = itemView;
}
public void setheader(String h)
{
header = myView.findViewById(R.id.header);
header.setText(h);
}
public void set_sub(String s)
{
sub_header = myView.findViewById(R.id.sub_header);
sub_header.setText(s);
}
public void set_image(int i)
{
images = myView.findViewById(R.id.dash_image);
images.setImageResource(i);
}
}}
How can i add onItemclickListener here?
I expect and want to add OnItemclickListener in the icon but i can't and don't know how to add.
To create a onClickListener for RecyclerView you have to create a class which implements the RecyclerView.OnItemTouchListener
import android.support.v7.widget.*;
import android.view.*;
import android.content.*;
public class RecyclerViewTouchListener implements RecyclerView.OnItemTouchListener {
private GestureDetector gestureDetector;
private ClickListener clickListener;
public RecyclerViewTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) {
this.clickListener = clickListener;
gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
#Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null) {
clickListener.onLongClick(child, recyclerView.getChildPosition(child));
}
}
});
}
#Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
View child = rv.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) {
clickListener.onClick(child, rv.getChildPosition(child));
}
return false;
}
#Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
public interface ClickListener{
public void onClick(View view,int position);
public void onLongClick(View view,int position);
}
}
After that you can attach it to your RecyclerView to listen for clicks.
recyclerView.addOnItemTouchListener(new RecyclerViewTouchListener(getActivity(), recyclerView, new RecyclerViewTouchListener.ClickListener(){
#Override
public void onClick(View view, int position)
{
// TODO: Implement this method
}
#Override
public void onLongClick(View view, int position)
{
// TODO: Implement this method
}
}));
my recyclerview is great in scrolling but when it contains more than two items and click on last item or the one before it gives me the wrong position this is
and throws a NullPointerException this is my whole code from adapter to the listener.
my code :
public class ListAdapter extends RecyclerView.Adapter<ViewHolder> {
private List<ItemView> items;
private Context context;
public ListAdapter(List<ItemView> items, Context context) {
this.items = items;
this.context = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_style, parent, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
ItemView i = items.get(position);
ViewHolder.setHeadText(i.getHead());
ViewHolder.setScoreText(i.getContent());
}
#Override
public int getItemCount() {
return items.size();
}
}
class ViewHolder extends RecyclerView.ViewHolder {
private RecyclerViewOnTouchItemListener.ClickListener clickListener;
private static TextView headText, urlText;
private ConstraintLayout itemLayout;
public ViewHolder(View itemView) {
super(itemView);
headText = (TextView) itemView.findViewById(R.id.list_item_header);
urlText = (TextView) itemView.findViewById(R.id.list_item_content);
itemLayout = (ConstraintLayout) itemView.findViewById(R.id.item_list);
// itemLayout.setOnClickListener(this);
}
public static void setHeadText(String headText) {
ViewHolder.headText.setText(headText);
}
public static void setScoreText(String scoreText) {
ViewHolder.urlText.setText(scoreText);
}
public static String getHeadText(){return headText.getText().toString();}
public static String getUrlText(){return urlText.getText().toString();}
}
class RecyclerViewOnTouchItemListener implements RecyclerView.OnItemTouchListener {
private GestureDetector gestureDetector;
private ClickListener clickListener;
public RecyclerViewOnTouchItemListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) {
this.clickListener = clickListener;
gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
#Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null) {
clickListener.onLongClick(child, recyclerView.getChildAdapterPosition(child));
}
}
});
}
#Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
View child = rv.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) {
clickListener.onClick(child, rv.getChildAdapterPosition(child));
}
return false;
}
#Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) { }
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) { }
interface ClickListener {
void onClick(View view, int position);
void onLongClick(View view, int position);
}
}
and this is the activity that holds the recyclerview :
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_url_list);
context = getApplicationContext();
database = new DatabaseHelper(context);
listOfUrl = (RecyclerView) findViewById(R.id.url_list);
find = (Button) findViewById(R.id.findBtn);
cancel = (Button) findViewById(R.id.cancelBtn);
makeItPopUp();
listOfUrl.setLayoutManager(new LinearLayoutManager(this));
listOfUrl.setHasFixedSize(true);
listOfUrl.addItemDecoration(new DividerItemDecoration(this, LinearLayoutManager.VERTICAL));
adapter = new ListAdapter(fillList(), context);
listOfUrl.setAdapter(adapter);
adapter.notifyDataSetChanged();
selectedItems = new ArrayList<Boolean>(Arrays.asList(new Boolean[listOfUrl.getAdapter().getItemCount()]));
Collections.fill(selectedItems, Boolean.FALSE);
listOfUrl.addOnItemTouchListener(
new RecyclerViewOnTouchItemListener(this, listOfUrl
, new RecyclerViewOnTouchItemListener.ClickListener() {
#Override
public void onClick(View view, int position) {
if (selectedItems.get(position))
setItemSelectedState(false, position, Color.WHITE);
else
setItemSelectedState(true, position, Color.LTGRAY);
}
#Override
public void onLongClick(View view, int position) {}
private void setItemSelectedState(boolean isSelected, int position, int color) {
try {
listOfUrl.getChildAt(position).setBackgroundColor(color);
selectedItems.add(position, isSelected);
} catch (NullPointerException e) {
e.printStackTrace();
}
}
})
);
find.setOnClickListener(this);
cancel.setOnClickListener(this); }
any on can tell me what i did wrong.
Simple solution, create interface class:
public interface ListListener {
void onClick(int pos);
void onLongClick(int pos);
}
Adjust the content of your RecyclerViewAdapter class:
public class ListAdapter extends RecyclerView.Adapter<ViewHolder> {
private ListListener listener;
private List<ItemView> items;
private Context context;
public ListAdapter(List<ItemView> items, Context context) {
this.items = items;
this.context = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_style, parent, false);
return new ViewHolder(view);
}
public ItemView getItem(int pos) {
return items.get(pos);
}
public void setListener(ListListener listener) {
this.listener = listener;
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
ItemView i = items.get(position);
holder.setHeadText(i.getHead());
holder.setScoreText(i.getContent());
holder.itemLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int pos = holder.getAdapterPosition();
if (listener != null && pos != RecyclerView.NO_POSITION) {
listener.onClick(pos);
}
}
});
holder.itemLayout.setOnLongClickListener(new View.OnLongClickListener() {
#Override
public boolean onLongClick(View view) {
int pos = holder.getAdapterPosition();
if (pos != -1) {
if (listener != null) {
listener.onLongClick(getItem(pos));
}
}
return true;
}
});
}
And in your Activity class I edited some parts:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_url_list);
context = getApplicationContext();
database = new DatabaseHelper(context);
listOfUrl = (RecyclerView) findViewById(R.id.url_list);
find = (Button) findViewById(R.id.findBtn);
cancel = (Button) findViewById(R.id.cancelBtn);
makeItPopUp();
listOfUrl.setLayoutManager(new LinearLayoutManager(this));
listOfUrl.setHasFixedSize(true);
listOfUrl.addItemDecoration(new DividerItemDecoration(this, LinearLayoutManager.VERTICAL));
adapter = new ListAdapter(fillList(), context);
adapter.setListener(new SelectCountryDialogListener() {
#Override
public void onClick(int pos) {
ItemView item = adapter.getItem(pos);
}
#Override
public void onLongClick(int pos) {
ItemView item = adapter.getItem(pos);
}
});
listOfUrl.setAdapter(adapter);
selectedItems = new ArrayList<Boolean>(Arrays.asList(new Boolean[listOfUrl.getAdapter().getItemCount()]));
Collections.fill(selectedItems, Boolean.FALSE);
find.setOnClickListener(this);
cancel.setOnClickListener(this);
}
I'm pretty sure, that now it is very easy for you. Just to implement the functionality in onClick and onLongClick methods.
I've got a RecyclerView.ViewHolder and RecyclerView.Adapter, I need after click on item and then send information about this item to another Activity.
PlacesAdapter.java
public class PlacesAdapter extends RecyclerView.Adapter<PlacesViewHolder> {
private PlacesActivity placesActivity;
Context context;
private int position;
List<Places> places;
public PlacesAdapter(List<Places> places) {
this.places = places;}
#Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
}
#Override
public PlacesViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.places_view, viewGroup, false);
PlacesViewHolder pvh = new PlacesViewHolder(v);
return pvh;
}
#Override
public void onBindViewHolder(PlacesViewHolder personViewHolder, int i) {
personViewHolder.name.setText(places.get(i).name);
personViewHolder.address.setText(places.get(i).address);
Picasso.with(personViewHolder.itemView.getContext())
.load(places.get(i).photo)
.into(personViewHolder.getPhoto());
}
#Override
public int getItemCount() {
return places.size();
}
}
PlacesViewHolder.java
In this line "intent.putExtra(PlacesDetail.PLACES_NAME,);" How can I send name?
public class PlacesViewHolder extends RecyclerView.ViewHolder {
CardView cv;
public TextView name;
public TextView address;
public ImageView photo;
public PlacesViewHolder(final View itemView) {
super(itemView);
cv = (CardView)itemView.findViewById(R.id.cv);
name = (TextView)itemView.findViewById(R.id.person_name);
address = (TextView)itemView.findViewById(R.id.person_age);
photo = (ImageView)itemView.findViewById(R.id.person_photo);
itemView.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
Context context = v.getContext();
Intent intent = new Intent(context, PlacesDetail.class);
intent.putExtra(PlacesDetail.PLACES_NAME,);
context.startActivity(intent);
}
});
}
public TextView getAddress() {
return address;
}
public TextView getName() {
return name;
}
public ImageView getPhoto() {
return photo;
}
}
This is the complete example of custom Adapter where i'm able to get the details of particular items. In MainActivity you need to set the adapter :
adapter = new MyAdapter(getApplicationContext(), account_no, title, aFN1, aLN1,aFN2, aLN2,aFN3, aLN3,isavilable,waitlist,flag);
adapter.notifyDataSetChanged();
mRecyclerView.setAdapter(adapter);
Now see the code for the custom Adapter :
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
String TAG = "MyAdapter";
Context context;
private String[] accountNo;
private String[] title;
private String[] afn1;
private String[] aln1;
private String[] afn2;
private String[] aln2;
private String[] afn3;
private String[] aln3;
private String[] isAvailable;
private String[] waitlist;
private int flag;
public static class ViewHolder extends RecyclerView.ViewHolder {
public TextView account_no,title,afn1,afn2,aln1,aln2,color,is_available;
private ImageView img_android;
CardView cardView;
public ViewHolder(CardView v) {
super(v);
account_no = (TextView)v.findViewById(R.id.acctno);
title = (TextView)v.findViewById(R.id.title);
afn1 = (TextView) v.findViewById(R.id.afn1);
cardView = v;
}
}
// Provide a suitable constructor (depends on the kind of dataset)
public MyAdapter(Context context, String[] accountNo,String[] title,String[] afn1,String[] aln1,String[] afn2,String[] aln2,String[] afn3,String[] aln3,String[] isAvailable, String[] waitlist,int flag) {
this.context = context;
this.accountNo = accountNo;
this.title = title;
this.afn1 = afn1;
this.aln1 = aln1;
this.afn2 = afn2;
this.aln2 = aln2;
this.afn3 = afn3;
this.aln3 = aln3;
this.isAvailable = isAvailable;
this.waitlist = waitlist;
this.flag = flag;
Log.d(TAG,afn1.toString() +aln1+afn2+aln2+afn3+aln3.toString()+waitlist);
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent,int viewType) {
CardView cv = (CardView) LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item, parent, false);
return new ViewHolder(cv);
}
#Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
final CardView cardView = holder.cardView;
final TextView accountno = (TextView)cardView.findViewById(R.id.acctno);
accountno.setText(accountNo[position]);
final TextView titletxt = (TextView)cardView.findViewById(R.id.title);
titletxt.setText(title[position]);
final TextView afn1txt = (TextView) cardView.findViewById(R.id.afn1);
afn1txt.setText(afn1[position]+" "+aln1[position]);
Log.d(TAG,waitlist[position]);
cardView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int id = getItemViewType(position);
SharedPreferences sharedPreferences = context.getSharedPreferences(Constant.MYPREFERENCE,Context.MODE_PRIVATE);
SharedPreferences.Editor edit = sharedPreferences.edit();
edit.putString(Constant.ACCOUNT,accountNo[position]);
edit.putString(Constant.TITLE,title[position]);
edit.putString(Constant.AFN1,afn1[position]);
edit.putString(Constant.ALN1,aln1[position]);
edit.putString(Constant.AFN2,afn2[position]);
edit.putString(Constant.ALN2,aln2[position]);
edit.putString(Constant.AFN3,afn3[position]);
edit.putString(Constant.ALN3,aln3[position]);
edit.putBoolean(Constant.IS_AVAILABLE, Boolean.parseBoolean(isAvailable[position].toUpperCase()));
edit.putString(Constant.WAITLIST,waitlist[position]);
Log.d("WaitingNo2 :",""+String.valueOf(waitlist[position]));
edit.commit();
Intent intent = new Intent(v.getContext(), DetailsActivity.class);
v.getContext().startActivity(intent);
}
});
}
// Return the size of your dataset (invoked by the layout manager)
#Override
public int getItemCount() {
return accountNo.length;
}
}
After All that get the value from sharedPreferences in the Activity which is called on Card Click:
preferences = getSharedPreferences("myshared", Context.MODE_PRIVATE);
AccountNo = sharedPreferences.getString(Constant.ACCOUNT,null).toUpperCase();
title = sharedPreferences.getString(Constant.TITLE,null).toUpperCase();
afn1 = sharedPreferences.getString(Constant.AFN1,null).toUpperCase();
aln1 = sharedPreferences.getString(Constant.ALN1,null).toUpperCase();
afn2 = sharedPreferences.getString(Constant.AFN2,null).toUpperCase();
aln2 = sharedPreferences.getString(Constant.ALN2,null).toUpperCase();
afn3 = sharedPreferences.getString(Constant.AFN3,null).toUpperCase();
aln3 = sharedPreferences.getString(Constant.ALN3,null).toUpperCase();
isAvailable = sharedPreferences.getBoolean(Constant.IS_AVAILABLE,isAvailable);
waitlist = sharedPreferences.getString(Constant.WAITLIST,waitlist);
Now do whatever you want and enjoy the code.
You can achieve this by creating an interface inside your adapter for an itemclicklistener and then you can set onItemClickListener from your PlacesActivity.
Somewhere inside your PlacesAdapter you would need the following:
private onRecyclerViewItemClickListener mItemClickListener;
public void setOnItemClickListener(onRecyclerViewItemClickListener mItemClickListener) {
this.mItemClickListener = mItemClickListener;
}
public interface onRecyclerViewItemClickListener {
void onItemClickListener(View view, int position, String places_name);
}
Then inside your ViewHolder (which I've added as an inner class inside my adapter), you would apply the listener to the components you'd like the user to click, like so:
class PlacesViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
PlacesViewHolder(View view) {
super(view);
view.setOnClickListener(this);
}
#Override
public void onClick(View v) {
if (mItemClickListener != null) {
mItemClickListener.onItemClickListener(v, getAdapterPosition(), PlacesDetail.PLACES_NAME);
}
}
}
This example shows an onClickListener being applied to the view inside PlacesViewHolder.
recyclerView.setAdapter(adapter);// set adapter on recyclerview
adapter.notifyDataSetChanged();// Notify the adapter
adapter.setOnItemClickListener(new PlacesAdapter.onRecyclerViewItemClickListener() {
#Override
public void onItemClickListener(View view, int position, String places_name) {
//perform click logic here (places_name is passed)
}
});
To implement this code, you would setOnItemClickListener to your adapter inside PlacesActivity as shown above.
try this , it's work with me correctly
Create a new class and this code
public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener {
private OnItemClickListener mListener;
public interface OnItemClickListener {
public void onItemClick(View view, int position);
public void onLongItemClick(View view, int position);
}
GestureDetector mGestureDetector;
public RecyclerItemClickListener(Context context, final RecyclerView recyclerView, OnItemClickListener listener) {
mListener = listener;
mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
#Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && mListener != null) {
mListener.onLongItemClick(child, recyclerView.getChildAdapterPosition(child));
}
}
});
}
#Override public boolean onInterceptTouchEvent(RecyclerView view, MotionEvent e) {
View childView = view.findChildViewUnder(e.getX(), e.getY());
if (childView != null && mListener != null && mGestureDetector.onTouchEvent(e)) {
mListener.onItemClick(childView, view.getChildAdapterPosition(childView));
return true;
}
return false;
}
#Override public void onTouchEvent(RecyclerView view, MotionEvent motionEvent) { }
#Override
public void onRequestDisallowInterceptTouchEvent (boolean disallowIntercept){}
}
And in your Activity add this to your adapter implementation
mRecyclerView.addOnItemTouchListener(
new RecyclerItemClickListener(getActivity(), mRecyclerView, new RecyclerItemClickListener.OnItemClickListener() {
#Override
public void onItemClick(View view, int position) {
// do something
}
}
}
#Override
public void onLongItemClick(View view, int position) {
// do whatever
}
})
);