android RadioGroup实现单选以及默认选中

代码下载链接：http://download.csdn.net/detail/a123demi/7511835

本文将通过radiogroup和radiobutton实现组内信息的单选,

其中radiogroup就是将radiobutton进行分组,同一管理和控制

同时实现默认选中情况,获取默认值.效果图

具体实例如下：

1.activity_main.xml

2.strings.xml

<?xml version="1.0" encoding="utf-8"?>    RadioGroupDemo    请选择你的性别：    Settings    男    女

3.MainActivity.java

protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);                defaultStr = this.getResources().getString(R.string.please_selected);        seletedTv = (TextView) this.findViewById(R.id.diplay_seleted_item_tv);        sexRg = (RadioGroup) this.findViewById(R.id.sex_rg);        manRb = (RadioButton) this.findViewById(R.id.man_rb);        womanRb = (RadioButton) this.findViewById(R.id.woman_rb);                manRb.setChecked(true);        seletedTv.setText(defaultStr + manRb.getText().toString());                sexRg.setOnCheckedChangeListener(new OnCheckedChangeListener(){@Overridepublic void onCheckedChanged(RadioGroup rg, int checkedId) {// TODO Auto-generated method stubif(checkedId == manRb.getId()){seletedTv.setText(defaultStr + manRb.getText().toString());}else if(checkedId == womanRb.getId()){seletedTv.setText(defaultStr + womanRb.getText().toString());}else{seletedTv.setText(defaultStr);}}        });    }

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