How to set radio button checked as default in radiogroup?

Question

I have created RadioGroup and RadioButton dynamically as following:

RadioGroup radioGroup = new RadioGroup(context);
                      


        

Answer 1

you should check the radiobutton in the radiogroup like this:

radiogroup.check(IdOfYourButton)

Of course you first have to set an Id to your radiobuttons

EDIT: i forgot, radioButton.getId() works as well, thx Ramesh

EDIT2:

android:checkedButton="@+id/my_radiobtn"

works in radiogroup xml