android RadioGroup结合ActivityGroup

效果：

这样做，等于是自定义了tabhost的tab按钮。

部分代码：

xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
      <!-- //头部 -->
<include layout="@layout/activity_base_head" />    

     
     <RelativeLayout
     android:id="@id/content"
     android:layout_below="@id/add_title"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent">
     
     <RadioGroup android:background="@android:color/black"
         android:id="@+id/btnsGroup"
        android:orientation="horizontal"
        android:layout_width="fill_parent" android:layout_height="wrap_content"
        android:layout_marginLeft="7dp" android:layout_marginRight="7dp"
        android:layout_marginTop="4dp" android:layout_marginBottom="4dp">
        <!-- baike -->
        <RadioButton android:id="@+id/baike" android:text="百科"
            android:layout_width="wrap_content"
            android:layout_height="40px"
            android:textSize="16sp"
            android:layout_weight="1"
            android:gravity="center_horizontal"
            android:background="@drawable/radio_bg_selector"
            android:button="@null"
             />
        <!-- zhidao -->
        <RadioButton android:id="@+id/zhidao" android:text="知道"
            android:layout_marginLeft="7dp"
            android:layout_width="wrap_content"
            android:layout_height="40px" 
            android:textSize="16sp"
            android:layout_weight="1"
            android:gravity="center_horizontal"
            android:button="@null"
            android:background="@drawable/radio_bg_selector"/>
        <!-- xinwen -->
        <RadioButton android:id="@+id/xinwen" android:text="新闻"
            android:layout_marginLeft="7dp" 
            android:layout_width="wrap_content"
            android:layout_height="40px" 
            android:textSize="16sp"
            android:layout_weight="1"
            android:gravity="center_horizontal"
            android:button="@null"
            android:background="@drawable/radio_bg_selector"
            />
    </RadioGroup>

     </RelativeLayout>
</RelativeLayout>

　　　　 groups = (RadioGroup)findViewById(R.id.btnsGroup);
        groups.setOnCheckedChangeListener(new CheckedChangeListener());
        container = (LinearLayout) findViewById(R.id.containerBody);
        
        groups.check(R.id.baike);//选择一个按钮

class CheckedChangeListener implements RadioGroup.OnCheckedChangeListener {
        @Override
        public void onCheckedChanged(RadioGroup group, int checkedId) {
            View rootView=null;
            switch (checkedId) {
            case R.id.baike:
                rootView=getLocalActivityManager().startActivity(
                        "Module3",
                        new Intent(SearchActivity.this, BaikeActivity.class).putExtra(Config.ACTIVITY_KEY_WORD, keyWord)
                                .addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP))
                        .getDecorView();
                break;
            case R.id.zhidao:
                rootView=getLocalActivityManager().startActivity(
                        "Module2",
                        new Intent(SearchActivity.this, ZhidaoActivity.class).putExtra(Config.ACTIVITY_KEY_WORD, keyWord)
                                .addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP))
                        .getDecorView();
                break;
            case R.id.xinwen:
                rootView=getLocalActivityManager().startActivity(
                        "Module1",
                        new Intent(SearchActivity.this, NewsActivity.class).putExtra(Config.ACTIVITY_KEY_WORD, keyWord)
                                .addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP))
                        .getDecorView();
                break;
            default:
                break;
            }
            
            container.removeAllViews();
            container.addView(rootView);
        }

radio_bg_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="true"
          android:drawable="@drawable/radio_checked_bg"/> <!-- pressed -->
    <item android:drawable="@drawable/radio_bg"/> <!-- default -->
</selector>