RadioGroup例子
例子：

RadioGroup r = (RadioGroup)findViewById(R.id.radioGroup1);   r.setOnCheckedChangeListener(new OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(RadioGroup group, int cheId) {//cheId为点击的radio的idToast.makeText(ActivityTest.this, "test", Toast.LENGTH_SHORT).show();}});

PS：cheId为点击的radio的id，主要是区分一组多个radio时使用