TabHost

(一）

知识点：id使用系统自带

1.效果图：

2.布局

activity_main.xml

 <?xml version="1.0" encoding="utf-8"?>
 <TabHost
     android:id="@android:id/tabhost"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     xmlns:android="http://schemas.android.com/apk/res/android">
     <LinearLayout
         android:orientation="vertical"
         android:layout_width="match_parent"
         android:layout_height="wrap_content">
         <!--选项卡标题表-->
          <TabWidget
              android:id="@android:id/tabs"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"></TabWidget>
          <!--选项卡布局-->
         <FrameLayout
             android:id="@android:id/tabcontent"
             android:layout_width="match_parent"
             android:layout_height="match_parent"></FrameLayout>
     </LinearLayout>

 </TabHost>

也可以在  activity_main.xml布局中使用include

tab1.xml

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:id="@+id/tab01">
     <TextView
         android:text="LinnerLayout"
         android:layout_width="match_parent"
         android:layout_height="wrap_content" />

 </LinearLayout>

tab2.xml

 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/tab02">
     <TextView
     android:text="RelativeLayout"
     android:layout_width="match_parent"
     android:layout_height="wrap_content" />
 </RelativeLayout>

tab3.xml

 <?xml version="1.0" encoding="utf-8"?>
 <AbsoluteLayout
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/tab03">
     <TextView
         android:text="AbsoluteLayout"
         android:layout_width="match_parent"
         android:layout_height="wrap_content" />
 </AbsoluteLayout>

2.MainActivity.java

 package com.example.administrator.hello2;

 import android.app.TabActivity;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.widget.TabHost;

 public class MainActivity extends TabActivity {

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

         tabHost = getTabHost();

         LayoutInflater.from(MainActivity.this).inflate(R.layout.tab1,tabHost.getTabContentView(),true);
         LayoutInflater.from(MainActivity.this).inflate(R.layout.tab2,tabHost.getTabContentView(),true);
         LayoutInflater.from(MainActivity.this).inflate(R.layout.tab3,tabHost.getTabContentView(),true);

         tabHost.addTab(tabHost.newTabSpec("TAB1").setIndicator("线性布局").setContent(R.id.tab01));
         tabHost.addTab(tabHost.newTabSpec("TAB1").setIndicator("相对布局").setContent(R.id.tab02));
         tabHost.addTab(tabHost.newTabSpec("TAB1").setIndicator("绝对布局").setContent(R.id.tab03));

     }
 }