getParent() in order to iterate through the radio buttons and determine which one was checked. All you need is to first get the RadioGroup via findViewById(R.id ... ... <看更多>

Grouping radio buttons. Changes in the states of one radio button can affect other buttons in the group. Specifically, selecting a RadioButton in a RadioGroup ... ... <看更多>

RadioButton.Android. Radio buttons allow the selection a single option from a set. This component follows platform guidelines for Android, but can be used ... ... <看更多>