RecyclerView change UI of other items when an item is clicked

Question

I have a RecyclerView in which when a user clicks on an item, the background color of the RecyclerView changes. When the user clicks on another item, I want the background color of the previous selected item to return to normal and the new item's background color to change. How do I do this?

score 2 · Answer 1 · edited Sep 06 '18 at 09:20

2

Simple way is have a global variable, save position on click of item and notifyDataSetChanged and in onBindView compare the position if equal then set background color else set it to normal.

Code snippet

int clickedPosition;
boolean clicked;

public void onBindView(ViewHolder holder,int position){
    //your code
    if(clicked){
    if(position == clickedPosition)
       holder.itemView.setBackgroundColor(...);
    else
       holder.itemView.setBackGroundColor(..your default color..);
    }
    holder.itemView.setOnClickListener(...){
        clickedPosition = position;
        clicked = true; 
        notifyDataSetChanged();
    }
}

edited Sep 06 '18 at 09:20

Shivam Kumar

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answered Apr 23 '18 at 13:41

Ashwani

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Isn't `onBindView` only called at the creation of the Recycler View? – khateeb Apr 23 '18 at 13:46
it will be called everytime...on notifyDataSetChanged – Ashwani Apr 23 '18 at 13:46
and i missed something....wait ..leme modify my answer a bit – Ashwani Apr 23 '18 at 13:47
You could call `notifyItemChanged(position)` on both the previous and new selected items to prevent having to redraw the entire list – Eselfar Apr 23 '18 at 13:48
yes @Eselfar i agree..one can... – Ashwani Apr 23 '18 at 13:50

RecyclerView change UI of other items when an item is clicked

1 Answers1