代码取自https://www.tutorialspoint.com/android/android_spinner_control.htm.

class AndroidSpinnerExampleActivity extends Activity implements  OnItemSelectedListener{

   Spinner spinner;
   ArrayAdapter<String> dataAdapter;

   List<String> categories;

   public void update(String add){
      categories.add(add);

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

      dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
      spinner.setAdapter(dataAdapter);
   }

   @Override
   public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);

      // Spinner element
      spinner = (Spinner) findViewById(R.id.spinner);

      // Spinner click listener
      spinner.setOnItemSelectedListener(this);

      // Spinner Drop down elements
      categories = new ArrayList<String>();
      categories.add("Automobile");
      categories.add("Business Services");
      categories.add("Computers");
      categories.add("Education");
      categories.add("Personal");
      categories.add("Travel");

      // Creating adapter for spinner
      dataAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, categories);

      // Drop down layout style - list view with radio button
      dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

      // attaching data adapter to spinner
      spinner.setAdapter(dataAdapter);
   }

   @Override
   public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
      // On selecting a spinner item
      String item = parent.getItemAtPosition(position).toString();

      // Showing selected spinner item
      Toast.makeText(parent.getContext(), "Selected: " + item, Toast.LENGTH_LONG).show();
   }
   public void onNothingSelected(AdapterView<?> arg0) {
      // TODO Auto-generated method stub
   }
}

这或多或少是如何设置微调器和更新/添加内容。您所要做的就是调用update（add）并将您要添加的值添加到其中。