Using NumberPicker Widget with Strings

NumberPicker picker = new NumberPicker(this);
picker.setMinValue(0);
picker.setMaxValue(2);
picker.setDisplayedValues( new String[] { "Belgium", "France", "United Kingdom" } );

NumberPicker numberPicker = new NumberPicker(this);
String[] arrayString= new String[]{"hakuna","matata","timon","and","pumba"};
numberPicker.setMinValue(0);
numberPicker.setMaxValue(arrayString.length-1);

numberPicker.setFormatter(new NumberPicker.Formatter() {
  @Override
  public String format(int value) {
    // TODO Auto-generated method stub
    return arrayString[value];
  }
});

hope that helps!

String value = String.valueOf(picker.getValue());

You could mean something else, but it isn't very clear what you mean.

UPDATED:

You can fake it by setting your own formatter:

CountryFormatter implements Formatter {
    public String toString(int value) {
        switch(value) {
            case 0:
                return "England";
            case 1:
                return "France";
        }
        return "Unknown";
    }
}

picker.setFormatter(new CountryFormatter());

getValue() will still return an int, so you probably want to map the names of countries to their ids.

ADDED: The implementation of NumberPicker has:

public void setRange(int start, int end, String[] displayedValues)

Which seems to do a better job of what you want then the above formatter.. although it isn't mentioned in the documentation so probably isn't part of the public api

try this solution, may help you

    NumberPicker pickers = new NumberPicker(this);
    String[] arrayPicker= new String[]{"abc","def","ghi","jkl","mno"};

    //set min value zero
    pickers.setMinValue(0);
    //set max value from length array string reduced 1
    pickers.setMaxValue(arrayPicker.length - 1);
    //implement array string to number picker
    pickers.setDisplayedValues(arrayPicker);
    //disable soft keyboard
    pickers.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
    //set wrap true or false, try it you will know the difference
    pickers.setWrapSelectorWheel(false);

    //create button to test selected text string
    btnPicker.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            //get position (int) from number picker
            int pos = pickers.getValue();
            //get string from number picker and position
            String selecPicker = arrayPicker[pos];  
            //test toast to get selected text string
            Toast.makeText(context, selecPicker , Toast.LENGTH_SHORT).show();

        }
    });

This worked for me.

public class YourClassName extends AppCompatActivity {

NumberPicker picker = null;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.your_activity_layout_file);

    picker = (NumberPicker) findViewById(R.id.pickerId_From_your_Layout_file);

     picker.setMinValue(0);
    picker.setMaxValue(3);
    picker.setDisplayedValues(new String[]{"English", "French","Kiswahili","عربى"});
}
}