Android Implementation Bottom Tabhost

First say the layout file, as follows: Using android:layout_alignparentbottom= "true" to achieve the bottom display

<?xmlversion="1.0"encoding="utf-8"?>

< TabHost xmlns:android = "http://schemas.android.com/apk/res/android"      android:id = "@android:id/tabhost"      android:orientation = "vertical"      android:layout_width = "fill_parent"      android:layout_height = "fill_parent" >      < RelativeLayout          android:background = "@drawable/g"          android:layout_width = "fill_parent"          android:layout_height = "fill_parent" >      < TabWidget android:id = "@android:id/tabs"          android:layout_width = "fill_parent"          android:layout_height = "wrap_content"          android:layout_alignParentBottom = "true" >      </ TabWidget >      < FrameLayout android:id = "@android:id/tabcontent"          android:layout_width = "fill_parent"          android:layout_height = "fill_parent" >          < RelativeLayout android:id = "@+id/tabFirst"              android:layout_width = "fill_parent"              android:layout_height = "fill_parent"              android:orientation = "vertical" >          < AnalogClock              android:id = "@+id/widget31"              android:layout_width = "wrap_content"              android:layout_height = "wrap_content"              android:layout_centerInParent = "true" >          </ AnalogClock >          </ RelativeLayout >>          < RelativeLayout android:id = "@+id/tabSecond"              android:layout_width = "fill_parent"              android:layout_height = "fill_parent"              android:orientation = "vertical" >              < DigitalClock                  android:layout_centerInParent = "true"                  android:layout_width = "wrap_content"                  android:layout_height = "wrap_content" >              </ DigitalClock >          </ RelativeLayout >      </ FrameLayout >      </ RelativeLayout > </ TabHost >Here is the main program code, comments written in more detail, there is no more explanation package com.cloay; import android.app.TabActivity; import android.graphics.Color; import android.os.Bundle; import android.widget.TabHost; import android.widget.TabHost.OnTabChangeListener; import android.widget.Toast; public class TabTestActivity  extends TabActivity {      TabHost tabHost;      @Override      public void onCreate(Bundle savedInstanceState) {          super .onCreate(savedInstanceState);          setContentView(R.layout.main);          //获取TabHost对象          tabHost = getTabHost();   //        tabHost.setup();          //新建一个newTabSpec,设置标签和图标(setIndicator),设置内容(setContent)          tabHost.addTab(tabHost.newTabSpec( "Test one" ).setIndicator( "" ,getResources().getDrawable(android.R.drawable.ic_menu_call)).setContent(R.id.tabFirst));          tabHost.addTab(tabHost.newTabSpec( "Test two" ).setIndicator( "" ,getResources().getDrawable(android.R.drawable.ic_menu_camera)).setContent(R.id.tabSecond));          //设置TabHost的背景颜色          tabHost.setBackgroundColor(Color.argb( 150 , 22 , 70 , 150 ));          //设置TabHost的背景图片资源 //      tabHost.setBackgroundResource(R.drawable.bg);          //设置当前现实哪一个标签          tabHost.setCurrentTab( 0 );    //0为标签ID          //标签切换处理，用setOnTabChangedListener            tabHost.setOnTabChangedListener( new OnTabChangeListener(){              public void onTabChanged(String tabId){                  Toast.makeText(TabTestActivity. this ,  "This is a Test!" , Toast.LENGTH_LONG).show();              }          });      } }

Android Implementation Bottom Tabhost