How do I get the position selected in a RecyclerView

Question

I am experimenting with the support library s recyclerview and cards   I have a recyclerview of cards   Each card has an  x  icon at the top right corner to remove it   The card xml  list item xml    lt  xml version  1 0  encoding  utf-8   gt   lt android support v7 widget CardView xmlns android  http   schemas android com apk res android  android layout width  match parent  android layout height  match parent  android layout margin  5dp  gt   lt RelativeLayout     android layout width  match parent      android layout height  match parent  gt       lt TextView         android id    id taskDesc          android layout width  wrap content          android layout height  wrap content          android layout alignParentBottom  true          android textSize  40sp          android text  hi   gt       lt ImageView         android id    id xImg          android layout width  wrap content          android layout height  wrap content          android layout alignParentTop  true          android layout alignParentRight  true          android src   drawable ic remove   gt   lt  RelativeLayout gt   lt  android support v7 widget CardView gt    I attempted to tag the row with the position I would use in notifyItemRemoved position  in TaskAdapter java   public class TaskAdapter extends RecyclerView Adapter lt TaskAdapter TaskViewHolder gt      private List lt Task gt  taskList  private TaskAdapter thisAdapter   this       cache of views to reduce number of findViewById calls public static class TaskViewHolder extends RecyclerView ViewHolder implements View OnClickListener       protected TextView taskTV      protected ImageView closeBtn      public TaskViewHolder View v            super v           taskTV    TextView v findViewById R id taskDesc               Override     public void onClick View v            int position   v getTag            adapter notifyItemRemoved position             public TaskAdapter List lt Task gt  tasks        if tasks    null          throw new IllegalArgumentException  tasks cannot be null        taskList   tasks         onBindViewHolder binds a model to a viewholder  Override public void onBindViewHolder TaskViewHolder taskViewHolder  int pos        final int position   pos      Task currTask   taskList get pos       taskViewHolder taskTV setText currTask getDescription          taskViewHolder closeBtn setOnClickListener new View OnClickListener              Override         public void onClick View v                thisAdapter notifyItemRemoved position                         Override public int getItemCount         return taskList size           inflates row to create a viewHolder  Override public TaskViewHolder onCreateViewHolder ViewGroup parent  int pos        View itemView   LayoutInflater from parent getContext                                        inflate R layout list item  parent  false        return new TaskViewHolder itemView         This won t work because you can t set a tag nor can I access the adapter from onClick

User · Answer

Get focused child  and use it to get position in adapter   mRecyclerView getChildAdapterPosition mRecyclerView getFocusedChild

User · Answer

1  Create class Name RecyclerTouchListener java  import android content Context  import android support v7 widget RecyclerView  import android view GestureDetector  import android view MotionEvent  import android view View   public class RecyclerTouchListener implements RecyclerView OnItemTouchListener     private GestureDetector gestureDetector  private ClickListener clickListener   public RecyclerTouchListener 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  amp  amp  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  amp  amp  clickListener    null  amp  amp  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        public interface ClickListener       void onClick View view  int position        void onLongClick View view  int position         2  Call RecyclerTouchListener  recycleView addOnItemTouchListener new RecyclerTouchListener this  recycleView   new RecyclerTouchListener ClickListener          Override     public void onClick View view  int position            Toast makeText MainActivity this Integer toString position  Toast LENGTH SHORT  show                Override     public void onLongClick View view  int position

User · Answer

A different method - using setTag   and getTag   methods of the View class    use setTag   in the onBindViewHolder method of your adapter   Override public void onBindViewHolder myViewHolder viewHolder  int position        viewHolder mCardView setTag position       where mCardView is defined in the myViewHolder class  private class myViewHolder extends RecyclerView ViewHolder implements View OnClickListener              public View mCardView              public myViewHolder View view                   super view                  mCardView    CardView  view findViewById R id card view                   mCardView setOnClickListener this                          use getTag   in your OnClickListener implementation   Override public void onClick View view        int position    int  view getTag                  display toast with position of cardview in recyclerview list upon click Toast makeText view getContext   Integer toString position  Toast LENGTH SHORT  show         see https   stackoverflow com a 33027953 4658957 for more details

User · Answer

Override public void onClick View v         int pos   getAdapterPosition        Simple as that  on ViewHolder

User · Answer

public static class ViewHolder extends RecyclerView ViewHolder implements View OnClickListener        FrameLayout root        public ViewHolder View itemView            super itemView            root    FrameLayout  itemView findViewById R id root           root setOnClickListener this                Override     public void onClick View v            LogUtils errorLog  POS CLICKED       getAdapterPosition

User · Answer

I solved this way  class MyOnClickListener implements View OnClickListener            Override         public void onClick View v                 int itemPosition   mRecyclerView getChildAdapterPosition v                myResult   results get itemPosition                       And in the adapter   Override         public MyAdapter ViewHolder onCreateViewHolder ViewGroup parent                                                         int viewType                            View v   LayoutInflater from parent getContext    inflate R layout list wifi  parent  false               v setOnClickListener new MyOnClickListener                 ViewHolder vh   new ViewHolder v               return vh

User · Answer

Set your onClickListeners on onBindViewHolder   and you can access the position from there  If you set them in your ViewHolder you won t know what position was clicked unless you also pass the position into the ViewHolder EDIT As pskink pointed out ViewHolder has a getPosition   so the way you were originally doing it was correct  When the view is clicked you can use getPosition   in your ViewHolder and it returns the position Update getPosition   is now deprecated and replaced with getAdapterPosition   Update 2020 getAdapterPosition   is now deprecated and replaced with getAbsoluteAdapterPosition   or getBindingAdapterPosition   Kotlin code  override fun onBindViewHolder holder  MyHolder  position  Int               - get element from your dataset at this position         val item   myDataset get holder absoluteAdapterPosition

User · Answer

onBindViewHolder   is called for each and every item and setting the click listener inside onBindVieHolder   is an unnecessary option to repeat when you can call it once in your ViewHolder constructor   public class MyViewHolder extends RecyclerView ViewHolder        implements View OnClickListener     public final TextView textView       public MyViewHolder View view         textView    TextView  view findViewById R id text view         view setOnClickListener this            getAdapterPosition   retrieves the position here             Override    public void onClick View v            Clicked on item        Toast makeText mContext   Clicked on position      getAdapterPosition    Toast LENGTH SHORT  show

User · Answer

When using data binding and you need to know a RecyclerView click position from inside of an item s click listener  Kotlin     val recyclerView   view parent as RecyclerView     val position   recyclerView getChildAdapterPosition view

User · Answer

Personally  the simplest way that I have found and works great for me is as follows   Create an interface inside your  RecycleAdapter  Class  Subclass   public interface ClickCallback       void onItemClick int position       Add a variable of the interface as a parameter in the Constructor   private String   items  private ClickCallback callback   public RecyclerAdapter String   items  ClickCallback clickCallback        this items   items      this callback   clickCallback      Set a Click listener in the ViewHolder  another subclass  and pass the  position  to through the interface      AwesomeViewHolder View itemView            super itemView           itemView setOnClickListener new View OnClickListener                  Override             public void onClick View v                    callback onItemClick getAdapterPosition                                       mTextView    TextView  itemView findViewById R id mTextView           Now  when initializing the recycler adapter in an activity fragment  just Create a new  ClickCallback   interface   String   values     Hello   World    RecyclerAdapter recyclerAdapter   new RecyclerAdapter values  new RecyclerAdapter ClickCallback          Override     public void onItemClick int position                Do anything with the item position             That s it for me

User · Answer

No need to have your ViewHolder implementing View OnClickListener  You can get directly the clicked position by setting a click listener in the method onCreateViewHolder of RecyclerView Adapter here is a sample of code    public class ItemListAdapterRecycler extends RecyclerView Adapter lt ItemViewHolder gt         private final List lt Item gt  items       public ItemListAdapterRecycler List lt Item gt  items                this items   items              Override     public ItemViewHolder onCreateViewHolder final ViewGroup parent  int viewType                View view   LayoutInflater from parent getContext    inflate R layout item row  parent  false            view setOnClickListener new View OnClickListener                          Override             public void onClick View view                                int currentPosition   getClickedPosition view                   Log d  DEBUG        currentPosition                                      return new ItemViewHolder view               Override     public void onBindViewHolder ItemViewHolder itemViewHolder  int position                                Override     public int getItemCount                 return items size               private int getClickedPosition View clickedView                RecyclerView recyclerView    RecyclerView  clickedView getParent            ItemViewHolder currentViewHolder    ItemViewHolder  recyclerView getChildViewHolder clickedView           return currentViewHolder getAdapterPosition

User · Answer

To complement  tyczj answer   Generic Adapter Pseido code   public abstract class GenericRecycleAdapter lt T  K extends RecyclerView ViewHolder gt  extends RecyclerView Adapter    private List lt T gt  mList    default implementation code   public abstract int getLayout      Override     public RecyclerView ViewHolder onCreateViewHolder ViewGroup parent  int viewType            View v   LayoutInflater from parent getContext                     inflate getLayout    parent  false           return getCustomHolder v              public Holders TextImageHolder getCustomHolder View v            return new Holders TextImageHolder v                Override             public void onClick View v                    onItem mList get this getAdapterPosition                                      abstract void onItem T t      Override public void onBindViewHolder RecyclerView ViewHolder holder  int position        onSet mList get position    K  holder       public abstract void onSet T item  K holder        ViewHolder   public class Holders         public static class TextImageHolder extends RecyclerView ViewHolder implements View OnClickListener           public TextView text           public TextImageHolder View itemView                super itemView               text    TextView  itemView findViewById R id text               text setOnClickListener this                         Override         public void onClick View v                           Adapter usage   public class CategoriesAdapter extends GenericRecycleAdapter lt Category  Holders TextImageHolder gt          public CategoriesAdapter List lt Category gt  list  Context context            super list  context               Override     void onItem Category category                  Override     public int getLayout             return R layout categories row              Override     public void onSet Category item  Holders TextImageHolder holder

User · Answer

I think the most correct way to get item position is  View OnClickListener onClickListener   new View OnClickListener          Override public void onClick View v          View view   v        View parent    View  v getParent          while    parent instanceof RecyclerView            view parent          parent    View  parent getParent                  int position   recyclerView getChildAdapterPosition view       Because view  you click not always the root view of your row layout   If view is not a root one  e g buttons   you will get Class cast exception  Thus at first we need to find the view  which is the a dirrect child of you reciclerview  Then  find position using recyclerView getChildAdapterPosition view

[android] How do I get the position selected in a RecyclerView?

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