How to access RecyclerView viewholder inside main activity in android?

Question

I have a list in activity with dynamic data.When i click on a button inside list item,I want to hide any text from list item.From adapter class it can be possible to get views from custom layout but from activity how to do this?

you have to make a listener and implement it on your activity. — Viks, Mar 12 '18 at 11:08
using listener i can be able to get the position but how to get the views with respected position from adapter viewholder inside activity — Ritika Singh, Mar 12 '18 at 11:12
You shouldn't access views from your activity.. let your adapter handle that.. use callbacks with flags and notify your adapter whenever a change is performed so That it'll update the displayed list — ColdFire, Mar 12 '18 at 11:13
see this answer https://stackoverflow.com/questions/30284067/handle-button-click-inside-a-row-in-recyclerview#answer-37588931 — Viks, Mar 12 '18 at 11:16
Possible duplicate of [Handle Button click inside a row in RecyclerView](https://stackoverflow.com/questions/30284067/handle-button-click-inside-a-row-in-recyclerview) — Viks, Mar 12 '18 at 11:18
i can get the position inside activity but is it possible to get views with the respective position in main activity not in adapter? — Ritika Singh, Mar 12 '18 at 11:40
why do you want to change the visibility of adapter contents from your activity, can you explain your scenario — Navneet Krishna, Mar 12 '18 at 12:13
i have a food list with add to cart button when food is successfully added want to hide the add to cart button and show the cart quantity — Ritika Singh, Mar 12 '18 at 12:24

score 0 · Answer 1 · edited Mar 28 '21 at 13:50

0

Just change the data of that particular position and then call YourCustomUpdateFunc:

//Function inside your RecyclerAdapter class
public void YourCustomUpdateFunc(int pos){
    notifyItemChanged(pos);
}

Then, the onBindViewHolder function will do its work.

edited Mar 28 '21 at 13:50

Adrian Mole

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answered Mar 28 '21 at 13:08

Vipin Soni

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score -1 · Answer 2 · answered Mar 12 '18 at 11:13

First Create local Variable in adapter class as

OnCustClick mclickListner;

then in viewholder override method like 

 @Override
        public void onClick(View v) {
            if (mclickListner != null) {
                mclickListner.onItemClick(v, getAdapterPosition());
            }
        }

after that add this methods in your adapter class

 public interface OnCustClick{
        void onItemClick(View view, int position);
    }
    public void setOnCustClick(OnCustClick mclickListner)
    {
        this.mclickListner = mclickListner;
    }

and in activity implement interface

How to access RecyclerView viewholder inside main activity in android?

2 Answers2