1 <?xml version="1.0" encoding="utf-8"?> 2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 3     xmlns:tools="http://schemas.android.com/tools" 4     android:layout_width="match_parent" 5     android:layout_height="match_parent" 6     tools:context="com.sowsceo.sms.MainActivity"> 7  8     <TabHost 9         android:id="@android:id/tabhost"10         android:layout_width="match_parent"11         android:layout_height="match_parent">12 13         <LinearLayout14             android:layout_width="match_parent"15             android:layout_height="match_parent"16             android:orientation="vertical">17 18             <TabWidget19                 android:id="@android:id/tabs"20                 android:layout_width="match_parent"21                 android:layout_height="wrap_content"></TabWidget>22             23             <FrameLayout24                 android:id="@android:id/tabcontent"25                 android:layout_width="match_parent"26                 android:layout_height="match_parent"></FrameLayout>27         </LinearLayout>28     </TabHost>29 </RelativeLayout>

 1 import android.app.TabActivity; 2 import android.content.Intent; 3 import android.support.v7.app.AppCompatActivity; 4 import android.os.Bundle; 5 import android.view.View; 6 import android.widget.TabHost; 7  8 public class MainActivity extends TabActivity { 9 10     private TabHost mTabHos;11 12     @Override13     protected void onCreate(Bundle savedInstanceState) {14         super.onCreate(savedInstanceState);15         setContentView(R.layout.activity_main);16         17         initTabHost();18     }19 20     /**21      * 初始化tabHost22      */23     private void initTabHost() {24         mTabHos = (TabHost) findViewById(android.R.id.tabhost);25 26         addTabSpec("conversation","会话",R.drawable.tab_conversation,new Intent(this,ConversationUI.class));27         addTabSpec("folder","文件夹",R.drawable.tab_folder,new Intent(this,FolderUI.class));28         addTabSpec("group","群组",R.drawable.tab_group,new Intent(this,GroupUI.class));29 30     }31 32     /**33      * 添加一个页签34      * @param tag  标记35      * @param label 标题36      * @param icon 图标37      * @param intent 指向的activity38      */39     private void addTabSpec(String tag,String label,int icon,Intent intent){40         TabHost.TabSpec newTabSpec = mTabHos.newTabSpec(tag);41 42         newTabSpec.setIndicator(label,getResources().getDrawable(icon));43         //设置页签的标题与图标44 45         newTabSpec.setContent(intent);46         //设置页签指向的显示内容问activity47 48         mTabHos.addTab(newTabSpec);49         //添加页签50     }51 52 }

 1 <?xml version="1.0" encoding="utf-8"?> 2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 3     xmlns:tools="http://schemas.android.com/tools" 4     android:layout_width="match_parent" 5     android:layout_height="match_parent" 6     android:paddingBottom="@dimen/activity_vertical_margin" 7     android:paddingLeft="@dimen/activity_horizontal_margin" 8     android:paddingRight="@dimen/activity_horizontal_margin" 9     android:paddingTop="@dimen/activity_vertical_margin"10     tools:context="com.sowsceo.sms.ConversationUI">11 12     <TextView13         android:layout_width="match_parent"14         android:layout_height="match_parent"15         android:text="会话"16         android:textSize="50sp"/>17 </RelativeLayout>

 1 import android.app.Activity; 2 import android.support.v7.app.AppCompatActivity; 3 import android.os.Bundle; 4  5 /** 6  * 会话 7  */ 8 public class ConversationUI extends Activity { 9 10     @Override11     protected void onCreate(Bundle savedInstanceState) {12         super.onCreate(savedInstanceState);13         setContentView(R.layout.activity_conversation_ui);14     }15 }

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.sowsceo.sms.FolderUI">    <TextView        android:layout_width="match_parent"        android:layout_height="match_parent"        android:text="文件夹"        android:textSize="50sp" /></RelativeLayout>

 1 import android.app.Activity; 2 import android.support.v7.app.AppCompatActivity; 3 import android.os.Bundle; 4  5 /** 6  * 7  * 创建者：风马一族 8  * 时间： 2016/8/9 19:06 9  * 说明：文件夹10  */11 12 public class FolderUI extends Activity {13 14     @Override15     protected void onCreate(Bundle savedInstanceState) {16         super.onCreate(savedInstanceState);17         setContentView(R.layout.activity_folder_ui);18     }19 }