当我单击另一个recyclerview中的项目时如何显示回收者视图

Question

I have used two Recyclerview inside a Recyclerview item. My problem is I want to hide the recyclerview(kitchen grocery) of 1st item(fruits and vegetable) when the user clicks 2nd item (fruits and vegetable) and have to show that particular items recycled view. Herewith I have attached the images of my requirement for your understanding.Please tell me a solution .when I click the second item the first items recyclerview should hide.How to achieve this. Thanks in Advance.

Answer 1

yes...Using Expandablelistview has solved my problem.here is the link for expandablelistview https://www.androidhive.info/2013/07/android-expandable-list-view-tutorial/

This tutorial will show expand of all item.So replace this code in main activity to expand one item.

        expListView.setOnGroupExpandListener(new OnGroupExpandListener() {

        // TODO Colapse Here Using this... in android
        int previousGroup = -1;
        boolean flag = false;

        @Override
        public void onGroupExpand(int groupPosition) {

        //  Log.e("keshav", "onGroupClick is -> " + groupPosition);

            Toast.makeText(getApplicationContext(),
                    listDataHeader.get(groupPosition) + " Expanded",
                    Toast.LENGTH_SHORT).show();

            if (groupPosition != previousGroup && flag) {
                expListView.collapseGroup(previousGroup);
            }
            previousGroup = groupPosition;

            flag = true;

        }
    });