How to select all items which listed in recyclerview?

Question

I have list of items inside of recyclerview, and they are multiple selectable.

I want to have select button to select all, and if selected deselect all. I didn\'t se

Answer 1

In my case,

Step - 1 :- first globally initialize flag in activity class

boolean flagSelectAll = false;

Step - 2 :- Then set below code in Onclick of Button

@OnClick(R.id.btnSelectAll)
public void setBtnSelectAll(View view){
    for (int i=0;i

Step - 3 :- Then create method selectAllItem in recyclerview's adpater class like below :

public void selectAllItem(boolean isSelectedAll) {
        try {
            if (itemList != null) {
                for (int index = 0; index < itemList.size(); index++) {
                    itemList.get(index).setSelected(isSelectedAll);
                }
            }
            notifyDataSetChanged();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }