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));

    }
}