How to get Selected Index or text of RadioGroup - Android?

The following code will get the selected Index of the RadioGroup and also get the text of the selected RadioButton,

int radioButtonID = someRadioGroup.getCheckedRadioButtonId();

View radioButton = someRadioGroup.findViewById(radioButtonID);

int idx = someRadioGroup.indexOfChild(radioButton);

RadioButton clickedRadioBut = (RadioButton) someRadioGroup.getChildAt(idx);

String selection = (String) clickedRadioBut.getText();