Qfyilyi

I have recycler-view with sections. The item include row and title. I want to select one item with checkbox and if user select next one I want to deselect the old the one(checkbox). I cannot find anywhere to achieve this functionality.

Here is my code

recyclerView = (RecyclerView)findViewById(R.id.recyclerViewActivityExample);

    recyclerView.setLayoutManager(new LinearLayoutManager(getApplicationContext()));



    list = new ArrayList<>();

    list.add(new AnimalObject("Cat","Mammals", false));

    list.add(new AnimalObject("Lion","Mammals", false));

    list.add(new AnimalObject("Dog","Mammals", false));

    list.add(new AnimalObject("Monkey","Mammals", false));

    list.add(new AnimalObject("Puma","Mammals", false));



    list.add(new AnimalObject("Albatross","Birds", false));

    list.add(new AnimalObject("Pigeon","Birds", false));



    list.add(new AnimalObject("Crabs","Aquatic Animals", false));

    list.add(new AnimalObject("Sharks","Aquatic Animals", false));



    MyAdapter myAdapter = new MyAdapter();





    sectionedRecyclerViewAdapter = new SectionedRecyclerViewAdapter(getApplicationContext(),

            R.layout.layout_list_section, R.id.textViewItemSection, myAdapter, this);

    sectionedRecyclerViewAdapter.setSections(list);



    recyclerView.setAdapter(sectionedRecyclerViewAdapter);



}











 //-------------------Adapter----------------------------

public class MyAdapter extends RecyclerView.Adapter<MyViewHolder> implements MyViewHolder.ViewHolderClickListener {



    @Override

    public int getItemCount() {

        return list.size();

    }



    @Override

    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {



        View itemView = LayoutInflater.

                from(parent.getContext()).

                inflate(R.layout.layout_list_item, parent, false);



        return new MyViewHolder(itemView,this);

    }



    @Override

    public void onBindViewHolder(MyViewHolder holder, final int position) {



        AnimalObject animalObject = list.get(position);



        holder.title.setText(animalObject.name);



        holder.itemView.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                // checkbox.setChecked(true);

                row_index = position;

                notifyDataSetChanged();

            }

        });



        if (row_index == position) {

            holder.checkBox.setChecked(true);

        } else {

            holder.checkBox.setChecked(false);

        }

    }



    @Override

    public void onClick(View v) {



        Toast.makeText(getApplicationContext(), list.get(sectionedRecyclerViewAdapter.getIndexForPosition(recyclerView.getChildPosition(v))).name,Toast.LENGTH_SHORT).show();



    }

}

// Adapter

 public String name;

public String type;

public boolean ischecked ;



public AnimalObject(final String name, final String type, boolean ischecked){



    this.name = name ;

    this.type = type ;

    this.ischecked = ischecked;

}

public boolean ischecked() {

    return ischecked;

}



public void setIschecked(boolean ischecked) {

    this.ischecked = ischecked;

}

Inside your Adapter

use this :
private int row_index;

   @Override

    public void onBindViewHolder(final Main_Page_Payment_Cash_Adapter.ViewHolder holder, final int position) {



             holder.itemView.setOnClickListener(new View.OnClickListener() {

                @Override

                public void onClick(View v) {

                    // checkbox.setChecked(true);

                    row_index = position;

                    notifyDataSetChanged();

                }

            });



            if (row_index == position) {

              // checkbox.setChecked(true);

            } else {

               // checkbox.setChecked(false);

            }

    }

I hope this is what you are looking for.

 @Override

    public void onBindViewHolder(MyViewHolder holder, final int position) {



        AnimalObject animalObject = list.get(position);



        holder.title.setText(animalObject.name);

        holder.itemView.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                AnimalObject animalObject = list.get(position);

                int currentCheckedStatus = animalObject.ischecked();

                for (int i =0;i<list.size();i++)

                {



                    if (i==position)

                    {

                        animalObject.setIschecked(!currentCheckedStatus);

                    }

                    else

                    {

                        animalObject.setIschecked(false);

                    }

                }

                notifyDataSetChanged();

            }

        });



            holder.checkBox.setChecked(animalObject.ischecked());

    }