Want to call Main Activity when button in Expandablelistview is clicked android

Question

I have an Expandablelistview with a button which deletes items from the database which feeds the listview . The items are getting deleted, but I need to leave the activity and go back to it to see the item gone. I thought of just calling the main activity, but the startActivity(intent) is underlined in red. I have tried all sorts. Please can someone help. Thank you

@Override
public View getGroupView(int i, boolean b, View view, ViewGroup viewGroup)
{
    final String item = (String)this.getGroup(i);

    if (view == null) {
        LayoutInflater layoutInflater = (LayoutInflater) this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        view = layoutInflater.inflate(R.layout.parent_layout, null);
    }

    final TextView itemTV = view.findViewById(R.id.parent_shopping_item);
    itemTV.setText(item);
    CheckBox checkBox = view.findViewById(R.id.checkBox);
    Button deleteItemBtn = view.findViewById(R.id.button);
    checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener()
    {
        @Override
        public void onCheckedChanged(CompoundButton compoundButton, boolean isChecked)
        {
            itemTV.setPaintFlags(itemTV.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
            if (! isChecked)
            {
                itemTV.setPaintFlags(itemTV.getPaintFlags() & (~Paint.STRIKE_THRU_TEXT_FLAG));
            }
        }
    });

    deleteItemBtn.setOnClickListener(new View.OnClickListener()
    {
        @Override
        public void onClick(View view)
        {
            DBManager dbManager = new DBManager(context, null, null, 1);
            dbManager.deleteItem(item);
            Intent intent = new Intent(context, MainActivity.class);
            startActivity(intent);
        }
    });
    return view;
}

Answer 1

I think calling

 yourAdapter.notifyDataSetChanged();

instead of trying to call your activity again, will update your listView.

Answer 2

Needed to add in the onClick method:

@Override
public void onClick(View view)
{
    DBManager dbManager = new DBManager(context, null, null, 1);
    dbManager.deleteItem(item);
    Intent intent = new Intent(context, MainActivity.class);
    Bundle bundle = new Bundle();
    startActivity(context, intent, bundle);
}