private void initializescreen() { Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); View spinnerContainer = LayoutInflater.from(this).inflate(R.layout.spinner, toolbar, false); ActionBar.LayoutParams lp = new ActionBar.LayoutParams( ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); toolbar.addView(spinnerContainer, lp); MySpinnerAdapter spinnerAdapter = new MySpinnerAdapter(); spinnerAdapter.addItem("Quận 1 "); spinnerAdapter.addItem("Quận 2 "); spinnerAdapter.addItem("Quận 3 "); spinnerAdapter.addItem("Quận 4 "); spinnerAdapter.addItem("Quận 5 "); spinnerAdapter.addItem("Quận 6 "); spinnerAdapter.addItem("Quận 7 "); spinnerAdapter.addItem("Quận 8 "); spinnerAdapter.addItem("Quận 9 "); spinnerAdapter.addItem("Quận 10 "); spinnerAdapter.addItem("Quận 11 "); spinnerAdapter.addItem("Quận 12 "); spinnerAdapter.addItem("Tân Bình "); spinnerAdapter.addItem("Bình Thạnh "); spinnerAdapter.addItem("Tân Phú "); spinnerAdapter.addItem("Thủ Đức "); spinnerAdapter.addItem("Hóc Môn "); spinnerAdapter.addItem("Củ Chi "); // ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, // R.array.district_array, R.layout.spinner_item_actionbar); // spinnerAdapter.setDropDownViewResource(R.layout.spinner_item_dropdown); Spinner spinner = (Spinner) spinnerContainer.findViewById(R.id.better_spinner); spinner.setAdapter(spinnerAdapter); }