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3. Add the listener object to the list of source listeners:
buttonField.setChangeListener(listener);
Here is the code you must write to add the button ''_buttonGoBack'' to the second screen
ButtonField _buttonGoBack = new ButtonField("Go Back",
ButtonField.FIELD_HCENTER | ButtonField.CONSUME_CLICK);
_buttonGoBack.setChangeListener(new FieldChangeListener() {
public void fieldChanged(Field field, int context) {
UiApplication.getUiApplication().popScreen();
}
});
add(_buttonGoBack);
