/**
* Lays out the UI elements on the screen
*/
private void createLayout() {
final VerticalFieldManager verticalFieldManager =
new VerticalFieldManager(Field.FIELD_HCENTER);
final HorizontalFieldManager horizontalFieldManager1 =
new HorizontalFieldManager(Field.FIELD_HCENTER);
final HorizontalFieldManager horizontalFieldManager2 =
new HorizontalFieldManager(Field.FIELD_HCENTER);
final HorizontalFieldManager horizontalFieldManager3 =
new HorizontalFieldManager(Field.FIELD_HCENTER);
final HorizontalFieldManager horizontalFieldManager4 =
new HorizontalFieldManager(Field.FIELD_HCENTER);
horizontalFieldManager1.add(_setFrequencyButton);
horizontalFieldManager2.add(_seekDownButton);
horizontalFieldManager2.add(_seekUpButton);
horizontalFieldManager3.add(_decreaseRSSIButton);
horizontalFieldManager3.add(_rssiLabel);
horizontalFieldManager3.add(_increaseRSSIButton);
horizontalFieldManager4.add(_playButton);
verticalFieldManager.add(_frequencyTextField);
verticalFieldManager.add(horizontalFieldManager1);
verticalFieldManager.add(horizontalFieldManager2);
verticalFieldManager.add(horizontalFieldManager3);
verticalFieldManager.add(horizontalFieldManager4);
verticalFieldManager.add(new SeparatorField());
verticalFieldManager.add(_rdsTextField);
verticalFieldManager.add(_logTextField);
add(verticalFieldManager);
}