Answer by Jason Robinson for basic android: syntax for switch statement instead of else-if

What the people above me said is correct, but for the sake of using a switch statement for the hell of it, you could set an OnCheckedChangedListener on your RadioGroup, then use a class like this:

private class MyCheckedChangedListener implements OnCheckedChangeListener {@Overridepublic void onCheckedChanged( RadioGroup group, int checkedId ) {    switch (checkedId) {        case R.id.radio15:            percentage = 15f;            break;        case R.id.radio18:            percentage = 18f;            break;        case R.id.radio20:            percentage = 20f;            break;    }}

}