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);
                    RadioButton radioBtn1 = new RadioButton(context);
                    RadioButton radioBtn2 = new RadioButton(context);
                    RadioButton radioBtn3 = new RadioButton(context);

                    radioBtn1.setText("Less");
                    radioBtn2.setText("Normal");
                    radioBtn3.setText("More");

                    radioBtn2.setChecked(true);

                    radioGroup.addView(radioBtn1);
                    radioGroup.addView(radioBtn2);
                    radioGroup.addView(radioBtn3);

Here step radioBtn2.setChecked(true); causes radioBtn2 always checked. That means I cannot uncheck radioBtn2 by checking other two radio buttons (radioBtn1,radioBtn3). I want to make that RadioGroup can check only one radio button at a time (Now it can check two radiobutton at a time).

How can I solve this problem?

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