How To Select And Unselect The Recycleview In Android

I have created the recycleview.That recycleview contains checkbox.If i click the 1 st item in recycleview the checkbox is checked after that i click the 2nd item means the 1 st and

Solution 1:

Take one boolean in model class :

privateboolean isCheck;

publicbooleanisCheck() {
    return isCheck;
}

publicvoidsetCheck(boolean check) {
    isCheck = check;
}

In onBindViewHolder of Adapter :

private CompoundButton.OnCheckedChangeListenercheckedListener=newCompoundButton.OnCheckedChangeListener() {                      
                        @OverridepublicvoidonCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                            // TODO Auto-generated method stubintgetPosition= (Integer) v.getTag();  // Here we get the position that we have set for the checkbox using setTag.boolean flag= movieItems.get(getPosition).isCheck();
                 for (inti=0; i < movieItems.size(); i++) {
                     if (getPosition == i) {
                      movieItems.get(getPosition).setCheck(true);
                      } else {
                      movieItems.get(getPosition).setCheck(false);
                      }
                     }

                notifyDataSetChanged();
               // m.setSelected(isChecked);


                    });;

@OverridepublicvoidonBindViewHolder(final ViewHolder holder, finalint position) {
     holder.checkbox.setOnCheckedChangeListener(null);
     holder.checkbox.setChecked(movieItems.get(position).isCheck()); 
     holder.checkbox.setOnCheckedChangeListener(checkedListener);
}

Solution 2:

Try this:

privateintlastSelectedPosition= -1; // adapter variable

holder.checkbox.setChecked(m.isSelected());
holder.checkbox.setOnCheckedChangeListener(newCompoundButton.OnCheckedChangeListener() {

    @OverridepublicvoidonCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            intgetPosition= (Integer) buttonView.getTag();  // Here we get the position that we have set for the checkbox using setTag.
            movieItems.get(getPosition).setSelected(buttonView.isChecked());
            final Child m=newChild();

            if (getPosition != lastSelectedPosition) {
                m.setSelected(isChecked);
                if (lastSelectedPosition != -1) {  
                    movieItems.get(lastSelectedPosition ).setSelected(false) // unselect last selection
                    notifyItemChanged(lastSelectedPosition); // notify adapter
                }   
            }

            lastSelectedPosition = isChecked ? getPosition : -1;  // remember last selected position
        }
    });
    holder.checkbox.setTag(position);

UPDATE

To avoid RecyclerView exception try to include notifyItemChanged call in an handler:

Handlerhandler=newHandler();
finalRunnabler=newRunnable() {
    publicvoidrun() {
        notifyItemChanged(lastSelectedPosition); // notify adapter
    }
};
handler.post(r);