单选按钮RadioButton及同时选择两个关联button的实现

#//Activity_Main.xml#
"http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.wl.radiobutton.MainActivity" >

    id="@+id/radioGroupId"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        id="@+id/manButtonId"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="男"/>
        id="@+id/womenButtonId"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="女"/>
    

        id="@+id/engradioGroupId"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        id="@+id/engmanButtonId"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="man"/>
        id="@+id/engwomenButtonId"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="women"/>
    

#//MainActivity.java#
package com.wl.radiobutton;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;


public class MainActivity extends Activity {

    private RadioGroup radioGroup;
    private RadioButton manButton;
    private RadioButton womenButton;
    private RadioGroup engradioGroup;
    private RadioButton engmanButton;
    private RadioButton engwomenButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        radioGroup = (RadioGroup)findViewById(R.id.radioGroupId);
        manButton = (RadioButton)findViewById(R.id.manButtonId);
        womenButton = (RadioButton)findViewById(R.id.womenButtonId);
        engradioGroup = (RadioGroup)findViewById(R.id.engradioGroupId);
        engmanButton = (RadioButton)findViewById(R.id.engmanButtonId);
        engwomenButton = (RadioButton)findViewById(R.id.engwomenButtonId);

        RadioGroupListener listener = new RadioGroupListener();
        radioGroup.setOnCheckedChangeListener(listener);
        engradioGroup.setOnCheckedChangeListener(listener);
    }

    class RadioGroupListener implements OnCheckedChangeListener{

        @Override
        public void onCheckedChanged(RadioGroup group, int checkedId) {
            // TODO Auto-generated method stub
            if(checkedId == manButton.getId()){
                engmanButton.setChecked(true);
            }
            else if(checkedId == womenButton.getId()){
                engwomenButton.setChecked(true);
            }
            else if(checkedId == engmanButton.getId()){
                manButton.setChecked(true);
            }
            else if(checkedId == engwomenButton.getId()){
                womenButton.setChecked(true);
            }
        }

    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}