• android-widget
• ::
• Class RadioGroup
• ::
• getCheckedRadioButtonId()

method:getCheckedRadioButtonId ( )
return type:int
content:ใช้คืนค่า id ของ Object RadioButton ที่ถูกเลือกอยู่
example:public class AndroidBamboo extends Activity 
{
    public void onCreate( Bundle savedInstanceState ) 
    {
        super.onCreate ( savedInstanceState );
        RadioGroup radio_group = new RadioGroup ( this );
        RadioButton radio_button_1 = new RadioButton ( this );
        radio_button_1.setId ( 1 );
        RadioButton radio_button_2 = new RadioButton ( this );
        radio_button_2.setId ( 2 );
        ViewGroup.LayoutParams params = new ViewGroup.LayoutParams ( 100, 30 );
        radio_group.addView ( radio_button_1, 0, params );
        radio_group.addView ( radio_button_2, 1, params );
        radio_group.check ( 2 );
        int id_checked = radio_group.getCheckedRadioButtonId ( );
        setContentView ( radio_group );
    }
}