Question

I am trying to set a common listener for an Customized button and Bitmap field.I am able to reach in listener but not able to differentiate between two fields.

private class MeaningsDetailsPageListner implements FieldChangeListener{
    public void fieldChanged(Field field, int arg1) {
        Dialog.alert("Hi");
        if(field == bField){
            Dialog.alert("Image Clicked");
        }else if(field == wordBtn){
            Dialog.alert("Button Clicked!!");
        }
    }
}

In following code wordBtn is my customised button and other is BitmapField.I am getting Hi alert but not able to differentiate further.

Any help would be appreciated.

Answer 1

Although I see what you’re trying to do, you’re better off adding a FieldChangeListener to each Field individually as an anonymous class. This way you don’t have to worry about casting your Field to the correct type when testing for equality inside fieldChanged.

ButtonField b = new ButtonField("Hello!");
b.setChangeListener(new FieldChangeListener() {

    public void fieldChanged(Field field, int context) {
        Dialog.alert("Button clicked");
    }
});