// адаптер
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, data333);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

        Spinner spinner = (Spinner) findViewById(R.id.spinner);
        spinner.setAdapter(adapter);

        // заголовок
        spinner.setPrompt("Title");
        // выделяем элемент
        spinner.setSelection(0);
        // устанавливаем обработчик нажатия
        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view,
                                       int position, long id) {
                // показываем позиция нажатого элемента
                Toast.makeText(getBaseContext(), "Position = " + position, Toast.LENGTH_SHORT).show();

                sub1=position;
                DisplayDataInToListView();

            }
            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
            }
        });

   <Spinner
        android:id="@+id/spinner"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:accessibilityPaneTitle="Subjects"
        android:layout_alignParentEnd="true"
        android:layout_alignParentRight="true"
        >
    </Spinner>

 spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view,
                                       int position, long id) {
                // показываем позиция нажатого элемента
                Toast.makeText(getBaseContext(), "Position = " + position, Toast.LENGTH_SHORT).show();

                sub1=position;
                DisplayDataInToListView();

            }
            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
            }
        });