Question

i’ve create this code to create one list in my spinner. now i want the list in alphabetical mode (for example xxx, yyy, aaa must be aaa, xxx, yyy)..how can i do?

public class MyAndroidAppActivity extends Activity {


      private Spinner spinner;
      private EditText Text;
      private ArrayAdapter<String> adapter;
      private Button addButton;

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

        Text = (EditText) findViewById(R.id.et);
        List<String> planets = new ArrayList<String>(Arrays.asList(getResources().getStringArray(R.array.clienti_arrays)));
        adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, planets);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner = (Spinner) findViewById(R.id.spinner1);
        spinner.setAdapter(adapter);
        Collections.sort(planets);
        addButton = (Button) findViewById(R.id.add_new);
        addButton.setOnClickListener(new OnClickListener()
        {
          public void onClick(View v)
          {
            addNewSpinnerItem();
          }
        });
      }

      protected void addNewSpinnerItem()
      {
        String textHolder = "" + Text.getText().toString();
        adapter.add(textHolder);

      }
    }

help me please!!

Answer 1

Have you checked docs? There is sort method in ArrayAdapter.

You just need to implement your own Comparator. I guess it’s just:

int compare(String s1, String s2) {
return s1.compareTo(s2);
}

🙂