1-) Android - SPİNNER=COMBOBOX KULLANIMI DİĞER 2 YOL AŞŞAĞIDADIR

1-)

  final List<String> list=new ArrayList<String>();

        list.add("Item 1");

        list.add("Item 2");

        list.add("Item 3");

        list.add("Item 4");

        list.add("Item 5");

        final Spinner sp1= (Spinner) findViewById(R.id.spinner);

        ArrayAdapter<String> adp1=new ArrayAdapter<>(this,android.R.layout.simple_list_item_1,list);

        adp1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

        sp1.setAdapter(adp1);

      sp1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

          @Override

          public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

              Toast.makeText(getApplicationContext(),"seçilen itemmmmmm "+sp1.getSelectedItem(),Toast.LENGTH_SHORT).show();

          }

          @Override

          public void onNothingSelected(AdapterView<?> parent) { }});

2-)

     final String[] str = {"Report 1", "Report 2", "Report 3", "Report 4", "Report 5"};

        final Spinner sp2 = (Spinner) findViewById(R.id.spinner);

        ArrayAdapter<String> adp2 = new ArrayAdapter<>(this, android.R.layout.simple_spinner_item, str);

        adp2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

        sp2.setAdapter(adp2);

sp2.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

    @Override

    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

        Toast.makeText(getApplicationContext(), "seçilen itemlerrr " + sp2.getSelectedItem(), Toast.LENGTH_SHORT).show();

    }

    @Override

    public void onNothingSelected(AdapterView<?> parent) {}});