How to bind method on RadioGroup on checkChanged event with data-binding

Question

I was searching over the internet for how to perform the new cool android data-binding over the RadioGroup and I didn\'t find a single blog post about it.

Answer 1

After digging to the bunch of methods, I found this question on SO which helped me understand how to bind single methods of listeners.

Here is what to do with RadioGroup:

In RadioGroup listener you have a method onCheckedChanged(RadioGroup g, int id). So you can directly bound that method to your handler or your activity by passing an instance of it as a variable in layout file and calling a method with the same signature.

So call on layout file like this:

  

       ...

   

And in my activity or handler, I need to simply provide the method with same name and signature like this:

public void onSplitTypeChanged(RadioGroup radioGroup,int id) {
  // ...
}

Just make sure method is public.

NOTE: This works for any (most of, I have not tried all) listener methods. Like for EditText you can provide android:onTextChanged and so on.