【Android】简单实现TabHost 换页效果

<?xml version= "1.0" encoding ="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/tabhost"
android:layout_width= "match_parent"
android:layout_height= "match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TabWidget
android:id="@android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</TabWidget>
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:id="@+id/tab1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="I am tab1"/>
</LinearLayout>
<LinearLayout
android:id="@+id/tab2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="I am tab2"/>
</LinearLayout>
</FrameLayout >
</LinearLayout >
</TabHost>

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.widget.TabHost;

public class MainActivity extends FragmentActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout. tab_main);
TabHost tabHost = (TabHost)findViewById(android.R.id. tabhost);
tabHost.setup();
tabHost.addTab(tabHost.newTabSpec( "tab1").setIndicator("第一页" ).setContent(R.id.tab1));
tabHost.addTab(tabHost.newTabSpec( "tab2").setIndicator("第二页" ).setContent(R.id.tab2));

}

}