How can I select only one checkbox in Recyclerview and notifydataset changed

Question

In my code I have create recyclerview with check box and default one item selected already. now I want when select other item checkbox so deselect all other items mean one i

Answer 1

1- You can create a variable inside Adapter class that can be used to hold the selected position:

private int selectedPosition = -1;// no selection by default

2- Inside onBindViewHolder set Check State:

holder.checkBox.setChecked(selectedPosition == position);

3- Inside setOnCheckedChangeListener you must update position

this.selectedPosition = holder.getAdapterPosition();

4- Refresh adapter

adapter.notifyDatasetChanged();

EDIT

onBindViewHolder will be called for all positions,

So method setChecked will called for all CheckBoxes, This method have a boolean input.

In above example i write setChecked(selectedPosition == position). For more readable i can write:

if(selectedPosition == position){ 
   holder.checkBox.setChecked(true);
}
else{
   holder.checkBox.setChecked(false) 
}