android RadioGroup實現單選以及預設選中

本文將通過radiogroup和radiobutton實現組內資訊的單選,

其中radiogroup就是將radiobutton進行分組,同一管理和控制

同時實現預設選中情況,擷取預設值.

具體執行個體如下：<喎?http://www.bkjia.com/kf/ware/vc/" target="_blank" class="keylink">vcD4KPHA+MS5hY3Rpdml0eV9tYWluLnhtbDwvcD4KPHA+PHByZSBjbGFzcz0="brush:java;">
2.strings.xml

    RadioGroupDemo    請選擇你的性別：    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);}}        });    }