Get clicked item and its position in RecyclerView

Question

I am replacing my ListView with RecyclerView  list showing ok  but I would like to know how to get clicked item and its position  similar to the method OnItemClickListener onItemClick AdapterView parent  View v  int position  long id  we use in ListView   Thanks for ideas

User · Answer

RecyclerView doesn t provide such method   To manage click events on RecyclerView I ended up implementing onClickListener in my adapter  when binding the ViewHolder  In my ViewHolder I keep a reference to the root view  as you can do with your ImageViews  TextViews  etc     and when binding the viewHolder I set a tag on it with information I need to handle click  such as position  and a clicklistener

User · Answer

In onViewHolder set onClickListiner to any view and in side click use this code     Toast makeText Drawer bar this   position    position  Toast LENGTH SHORT  show     Replace Drawer Bar with your Activity name

User · Answer

After lot of trial and error I found that there is a very easy way to do this that is by creating an interface in adapter class and implementing that in fragment now here comes the twist  I instansiated the view model inside my override function present In the fragment now you can send the data from that function to viemodel and from there anywhere   I don t know if this method is good coding method but please let me know in comment and if any wants to see the let me know in the comment section I regularly open stackover flow

User · Answer

Here is the simplest and the easiest way to find the position of the clicked item    I ve also faced the same problem    I wanted to find of the position of the clicked selected item of the RecyclerView   and perform some specific operations on that particular item   getAdapterPosition   method works like a charm for these kind of stuff  I found this method after a day of long research and after trying numerous other methods   int position   getAdapterPosition    Toast makeText this   Position is    position  Toast LENGTH SHORT  show      You do not have to use any extra method  Just create a global variable named  position  and initialize it with getAdapterPosition   in any of the major method of the adapter  class or similar    Here is a brief documentation from this link      getAdapterPosition   added in version 22 1 0   int getAdapterPosition      Returns the Adapter position of the item represented by this ViewHolder    Note that this might be different than the getLayoutPosition   if there are pending adapter updates but a new layout pass has not happened yet    RecyclerView does not handle any adapter updates until the next layout traversal  This may create temporary inconsistencies between what user sees on the screen and what adapter contents have  This inconsistency is not important since it will be less than 16ms but it might be a problem if you want to use ViewHolder position to access the adapter  Sometimes  you may need to get the exact adapter position to do some actions in response to user events  In that case  you should use this method which will calculate the Adapter position of the ViewHolder    Happy to help  Feel free to ask doubts

User · Answer

recyclerViewObject addOnItemTouchListener      new RecyclerItemClickListener          getContext            recyclerViewObject          new RecyclerItemClickListener OnItemClickListener                  Override public void onItemClick View view  int position                       view is the clicked view  the one you wanted                    position is its position in the adapter                            Override public void onLongItemClick View view  int position

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public class MyRvAdapter extends RecyclerView Adapter lt MyRvAdapter MyViewHolder gt       public Context context      public ArrayList lt RvDataItem gt  dataItems               constructor     overrides              class MyViewHolder extends RecyclerView ViewHolder          public TextView textView          public Context context           public MyViewHolder View itemView  Context context                super itemView                this context   context               this textView    TextView itemView findViewById R id textView                   on item click             itemView setOnClickListener new View OnClickListener                     Override                 public void onClick View v                           get position                     int pos   getAdapterPosition                            check if item still exists                     if pos    RecyclerView NO POSITION                           RvDataItem clickedDataItem   dataItems get pos                           Toast makeText v getContext     You clicked     clickedDataItem getName    Toast LENGTH SHORT  show

User · Answer

Short extension for Kotlin Method returns absolute position of all items  not the position of only visible items    fun RecyclerView getChildPositionAt x  Float  y  Float   Int       return getChildAdapterPosition findChildViewUnder x  y       And usage  val position   recyclerView getChildPositionAt event x  event y

User · Answer

recyclerView addOnItemTouchListener object   AdapterView OnItemClickListener                  RecyclerView OnItemTouchListener                   override fun onItemClick p0  AdapterView lt   gt    p1  View   p2  Int  p3  Long                        TODO  quot Not yet implemented quot                                      override fun onTouchEvent rv  RecyclerView  e  MotionEvent                        TODO  quot Not yet implemented quot                                      override fun onInterceptTouchEvent rv  RecyclerView  e  MotionEvent   Boolean                       TODO  quot Not yet implemented quot                                      override fun onRequestDisallowInterceptTouchEvent disallowIntercept  Boolean                        TODO  quot Not yet implemented quot                                      If use Kotlin

User · Answer

Use getLayoutPosition   in your custom interface java method  This will return the selected position of an item  check full detail on   https   becody com get-clicked-item-and-its-position-in-recyclerview

User · Answer

My simple solution Make a position holder       public class PositionHolder        private int position       public PositionHolder int position            this position   position             public int getPosition             return position             public void setPosition int position            this position   position           Just position or put data you need to get from activity  Adapter constructor  public ItemsAdapter Context context  List lt Item gt  items  PositionHolder positionHolder           this context   context          this items   items          this positionHolder   positionHolder     In Activity    Override     protected void onCreate Bundle savedInstanceState             super onCreate savedInstanceState           setContentView R layout activity main            selectedPosition   0           positionHolder   new PositionHolder selectedPosition           initView           In Adapter onClickLictener in the item in onBindViewHolder holder holderButton setOnClickListener v - gt                positionHolder setPosition position               notifyDataSetChanged                 Now whenever you change position in RecyclerView it is hold in the Holder  or maybe it should be called Listener  I hope it will be usefull My first post  P

User · Answer

Try in this way  Adapter class     public class ContentAdapter extends RecyclerView Adapter lt ContentAdapter ViewHolder gt     public interface OnItemClickListener       void onItemClick ContentItem item      private final List lt ContentItem gt  items  private final OnItemClickListener listener   public ContentAdapter List lt ContentItem gt  items  OnItemClickListener listener        this items   items      this listener   listener      Override public ViewHolder onCreateViewHolder ViewGroup parent  int viewType        View v   LayoutInflater from parent getContext    inflate R layout view item  parent  false       return new ViewHolder v       Override public void onBindViewHolder ViewHolder holder  int position        holder bind items get position   listener       Override public int getItemCount         return items size       static class ViewHolder extends RecyclerView ViewHolder        private TextView name      private ImageView image       public ViewHolder View itemView            super itemView           name    TextView  itemView findViewById R id name           image    ImageView  itemView findViewById R id image              public void bind final ContentItem item  final OnItemClickListener listener            name setText item name           itemView setOnClickListener new View OnClickListener                  Override public void onClick View v                    listener onItemClick item                                          In your Activity or fragment    ContentAdapter adapter   new ContentAdapter itemList  this     Note   Implement the OnItemClickListener based on context given by you in activity or fragment and overide methods

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Based on the link  Why doesn t RecyclerView have onItemClickListener    and How RecyclerView is different from Listview   and also  Duncan s general idea  I give my solution here   Define one interface RecyclerViewClickListener for a passing message from the adapter to Activity Fragment    public interface RecyclerViewClickListener         public void recyclerViewListClicked View v  int position         In Activity Fragment implement the interface  and also pass listener to adapter     Override   public void recyclerViewListClicked View v  int position                set up adapter and pass clicked listener this   myAdapter   new MyRecyclerViewAdapter context  this     In Adapter and ViewHolder    public class MyRecyclerViewAdapter extends RecyclerView Adapter lt MyRecyclerViewAdapter ItemViewHolder gt                       private Context context       private static RecyclerViewClickListener itemListener         public MyRecyclerViewAdapter Context context  RecyclerViewClickListener itemListener             this context   context           this itemListener   itemListener                                   ViewHolder class implement OnClickListener          set clicklistener to itemView and          send message back to Activity Fragment       public static class ItemViewHolder extends RecyclerView ViewHolder implements View OnClickListener                            public ItemViewHolder View convertView                 super convertView                                     convertView setOnClickListener this                         Override          public void onClick View v                 itemListener recyclerViewListClicked v  this getPosition                                    After testing  it works fine   UPDATE  Since API 22  RecyclerView ViewHolder getPosition   is deprecated  so instead with getLayoutPosition

User · Answer

Create below methods into the Activity which contains RecyclerView    private void createRecyclerView      final RecyclerView recyclerView    RecyclerView findViewById R id recyclerView       recyclerView setLayoutManager new LinearLayoutManager this        MyAdapter myAdapter new MyAdapter dataAray MianActivity this       recyclerView setAdapter myAdapter       recyclerView setItemAnimator new DefaultItemAnimator          setRecyclerViewClickListner recyclerView      private void setRecyclerViewClickListner RecyclerView recyclerView        final GestureDetector gestureDetector   new GestureDetector MainActivity this new GestureDetector SimpleOnGestureListener              Override public boolean onSingleTapUp MotionEvent e                return true                          recyclerView addOnItemTouchListener new RecyclerView OnItemTouchListener              Override         public boolean onInterceptTouchEvent RecyclerView recyclerView  MotionEvent motionEvent                View child  recyclerView findChildViewUnder motionEvent getX   motionEvent getY                 if child  null  amp  amp  gestureDetector onTouchEvent motionEvent                   int position recyclerView getChildLayoutPosition child                   String name itemArray get position  name               return true                      Override         public void onTouchEvent RecyclerView recyclerView  MotionEvent motionEvent                         Override         public void onRequestDisallowInterceptTouchEvent boolean b

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From the designer  you can set the onClick property of the listItem to a method defined with a single parameter  I have an example method defined below  The method getAdapterPosition will give you the index of the selected listItem   public void exampleOnClickMethod View view       myRecyclerView getChildViewHolder view  getAdapterPosition         For information on setting up a RecyclerView  see the documentation here  https   developer android com guide topics ui layout recyclerview

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Everytime I use another approach  People seem to store or get position on a view  rather than storing a reference to an object that is displayed by ViewHolder   I use this approach instead  and just store it in ViewHolder when onBindViewHolder   is called  and set reference to null in onViewRecycled     Every time ViewHolder becomes invisible  it s recycled  So this doesn t affect in large memory consumption    Override public void onBindViewHolder final ItemViewHolder holder  int position                holder displayedItem   adapterItemsList get i               Override public void onViewRecycled ItemViewHolder holder                holder displayedItem   null             class ItemViewHolder extends RecyclerView ViewHolder               MySuperItemObject displayedItem   null

User · Answer

Here is an Example to set a Click Listener      Adapter extends  RecyclerView Adapter lt MessageAdapter MessageViewHolder gt              public static class MessageViewHolder extends RecyclerView ViewHolder implements View OnClickListener           public TextView     tv msg          public TextView     tv date          public TextView     tv sendTime          public ImageView    sharedFile          public ProgressBar sendingProgressBar           public MessageViewHolder View v                super v               tv msg     TextView  v findViewById R id tv msg               tv date    TextView   v findViewById R id tv date               tv sendTime    TextView   v findViewById R id tv sendTime               sendingProgressBar    ProgressBar  v findViewById R id sendingProgressBar               sharedFile    ImageView  v findViewById R id sharedFile                sharedFile setOnClickListener this                        Override         public void onClick View view            int position      getAdapterPosition                  switch  view getId                     case R id sharedFile                        Log w      Selected  position                         break

User · Answer

If you want Click event of recycle-View from activity fragment instead of adapter then you can also use following short cut way   recyclerView setOnTouchListener new View OnTouchListener                  Override             public boolean onTouch View v  MotionEvent event                    final TextView txtStatusChange    TextView v findViewById R id txt key status                   txtStatusChange setOnClickListener new View OnClickListener                          Override                     public void onClick View v                            Log e TAG   hello text     txtStatusChange getText   toString       TAG     txtStatusChange getTag   toString                             Util showToast CampaignLiveActivity this  hello                                                              return false                              You can also use other long ways like using interface

User · Answer

Use below code -  public class SergejAdapter extends RecyclerView Adapter lt SergejAdapter MyViewHolder gt         class MyViewHolder extends RecyclerView ViewHolder implements View OnClickListener         Override     public void onClick View v               here you use position         int position   getAdapterPosition

User · Answer

create java file with below code   public class RecyclerItemClickListener implements RecyclerView OnItemTouchListener   private OnItemClickListener mListener   public interface OnItemClickListener       public void onItemClick View view  int position      GestureDetector mGestureDetector   public RecyclerItemClickListener Context context  OnItemClickListener listener        mListener   listener      mGestureDetector   new GestureDetector context  new GestureDetector SimpleOnGestureListener              Override public boolean onSingleTapUp MotionEvent e                return true                        Override public boolean onInterceptTouchEvent RecyclerView view  MotionEvent e        View childView   view findChildViewUnder e getX    e getY         if  childView    null  amp  amp  mListener    null  amp  amp  mGestureDetector onTouchEvent e             mListener onItemClick childView  view getChildLayoutPosition childView            return true            return false      Override public void onTouchEvent RecyclerView view  MotionEvent motionEvent        Override public void onRequestDisallowInterceptTouchEvent boolean disallowIntercept         and just use the listener on your RecyclerView object   recyclerView addOnItemTouchListener    new RecyclerItemClickListener context  new RecyclerItemClickListener OnItemClickListener        Override public void onItemClick View view  int position           TODO Handle item click

User · Answer

Put this code where you define recycler view in activity       rv list addOnItemTouchListener              new RecyclerItemClickListener activity  new RecyclerItemClickListener OnItemClickListener                      Override                 public void onItemClick View v  int position                         Toast makeText activity       position  Toast LENGTH SHORT  show                                              Then make separate class and put this code       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             GestureDetector mGestureDetector      public RecyclerItemClickListener Context context  OnItemClickListener listener            mListener   listener          mGestureDetector   new GestureDetector context  new GestureDetector SimpleOnGestureListener                  Override             public boolean onSingleTapUp MotionEvent e                    return true                                       Override     public boolean onInterceptTouchEvent RecyclerView view  MotionEvent e            View childView   view findChildViewUnder e getX    e getY             if  childView    null  amp  amp  mListener    null  amp  amp  mGestureDetector onTouchEvent e                 mListener onItemClick childView  view getChildAdapterPosition childView                      return false              Override     public void onTouchEvent RecyclerView view  MotionEvent motionEvent                Override     public void onRequestDisallowInterceptTouchEvent boolean disallowIntercept

User · Answer

simply check if the adapter position you get not less than zero  holder btnDelItem setOnClickListener new View OnClickListener          Override     public void onClick View v            if holder getAdapterPosition   gt  0               list remove holder getAdapterPosition                 notifyDataSetChanged

[android] Get clicked item and its position in RecyclerView

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