I\'m wondering if it\'s possible to add functionality to EditText such that when I include my newly extended field in the layout xml, I don\'t have to then add any code to the A
Actually there is nothing complicated about that. Usually you would apply a InputFilter to your EditText in your code and this would do the job. But if you see a pattern in that and want a EditText which always behaves that way you could create a custom widget that way:
public class PhoneEditText extends EditText {
public PhoneEditText(Context context) {
super(context);
init();
}
public PhoneEditText(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public PhoneEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
private void init() {
// set your input filter here
}
}
In XML layout you would simply use the full path to your custom class instead EditText: