drop down button xml file code example

Example: how to set list data to android spinner

// setting branch data in manually and load to spBranchName
        List<String> branchList = new ArrayList<>();
        branchList.add("CHITTAGONG");
        branchList.add("DHAKA");

        ArrayAdapter<String> branchListAdapter = new ArrayAdapter<>(getActivity(),
                android.R.layout.simple_spinner_item, branchList);
        branchListAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spBranchName.setAdapter(branchListAdapter);