山寨开机选择四大系统-----------RadioGroup 、RadioButton单选按钮

以下是java 文件

public class Activity01 extends Activity {/** * 创建TextView对象 * 创建RadioGroup对象 * 创建4个RadioButton对象 */TextView m_T;    RadioGroup m_RG;    RadioButton m_R1, m_R2, m_R3, m_R4;       @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        /** * 获得TextView对象 * 获得RadioGroup对象 * 获得4个RadioButton对象 */        m_T = (TextView)findViewById(R.id.TextView01);        m_RG =(RadioGroup)findViewById(R.id.RadioGroup01);        m_R1=(RadioButton)findViewById(R.id.RadioButton01);        m_R2 =(RadioButton)findViewById(R.id.RadioButton02);        m_R3 =(RadioButton)findViewById(R.id.RadioButton03);        m_R4 =(RadioButton)findViewById(R.id.RadioButton04);               /* 设置事件监听  */       m_RG.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener(){       public void onCheckedChanged(RadioGroup group, int checkedId){       if(checkedId == m_R2.getId()){       DisplayToast("恭喜你" + m_R2.getText()+ ",进入iphone4系统中~~~~");       }else{       DisplayToast("系统错误，该系统已损坏!");       }       }              });            }        public void DisplayToast(String str){    Toast toast = Toast.makeText(this, str, Toast.LENGTH_LONG);    //设置toast显示的位置  Gravity 重力    toast.setGravity(Gravity.TOP, 0, 220);    //显示该Toast    toast.show();    }    }

以下是UI的XML文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <TextView        android:id = "@+id/TextView01"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/hello"           />    <!-- 单选组框 -->            <!-- 选项按钮RadioButton -->    <RadioGroup        android:id = "@+id/RadioGroup01"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/RadioGroup01"           >        <RadioButton        android:id="@+id/RadioButton01"        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:text="@string/RadioButton01" />    <RadioButton        android:id = "@+id/RadioButton02"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/RadioButton02"           />    <RadioButton        android:id = "@+id/RadioButton03"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/RadioButton03"           />    <RadioButton        android:id = "@+id/RadioButton04"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/RadioButton04"           />             </RadioGroup>   </LinearLayout>

以下是string .xml里面的

<?xml version="1.0" encoding="utf-8"?><resources>       <string name="hello">选择进入系统</string>    <string name="app_name">系统选择</string>    <string name="RadioGroup01">RadioGroup01</string>    <string name="RadioButton01">android2.3.3</string>    <string name="RadioButton02">iphone4</string>    <string name="RadioButton03">windowPhone8</string>    <string name="RadioButton04">塞班系统</string>    </resources>

运行图片后为：

选择iPhone4 则显示