RadioGroup里单选按钮去掉默认选中

Android官方API文档完整版.chm ： http://download.csdn.net/download/haozq2012/7032817

//获得对象

m_RadioGroup = (RadioGroup) findViewById(R.id.radioGroup1);

//打开界面的时候清楚默认选择项

m_RadioGroup.clearCheck();

//按钮被触发时的监听事件

m_RadioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {

public void onCheckedChanged(RadioGroup group, int checkedId) {

String answer = question.getAnswer();

if(m_Radio0.getText().toString().subSequence(0, 1).equals(answer)){

//设置被选中

m_Radio0.setChecked(true);

str="恭喜您答对了！";

}else{

str="您太任性了！答错了哦！";

}

// 吧选择的答案赋值给文本对象m_TextViewanswer

m_TextViewanswer.setText("正确答案："+answer+">>>>"+str);

}

} );