RadioButton 속성, 메소드 정리

갈수록 어려워진다 ㅜㅜ..

public class Widgets2Activity extends Activity {
private RadioGroup group;
private TextView textview1;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        group = (RadioGroup)findViewById(R.id.radiogroup);
        textview1 = (TextView)findViewById(R.id.textview1);
        group.setOnCheckedChangeListener(mRadioCheck);  /** Listener 생성 방법 확인 필요*/
    }
    
    RadioGroup.OnCheckedChangeListener mRadioCheck = 

                                                         new RadioGroup.OnCheckedChangeListener()  {

    @Override
    public void onCheckedChanged(RadioGroup group, int checkedId) {
            switch(checkedId) {
            case R.id.radio1:
                    textview1.setText("Select 'Apple'");
                    break;
            case R.id.radio2:
                    textview1.setText("Select 'Orange'");  
                    break;
           }
   }

     };
   
}