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Android工作学习第5天之TabHost实现菜单栏底部显示

TabHost是一个装载选项卡窗口的容器，实现分模块显示的效果。像新浪微博客户端、微信客户端都是使用tabehost组件来开发的。

TabHost的组成：

|---TabWidget：实现标签栏，可供用户选择的标签集合;

|---FrameLayout：实现显示内容的帧布局.

TabHost有两种实现方式：

一、在布局文件中定义TabHost

               1、在配置文件中使用TabHost标签定义布局;

                2、TabHost 的id 定义为：tabhost;

                3、TabWidget 的id 定义为：tabs;

                4、FrameLayout 的id 定义为：tabcontent.

        二、继承TabActivity类：

                在Activity中通过getTabHost() 方法取得TabHost.

       这两种方法实现的效果是一样的，但是后者不需要定义TabHost的布局文件，使用起来比较方便，推荐大家使用这种方式。

 

先来看看实现的效果吧：

 

 

下面给出源代码：

第一种方式(使用xml布局)：

工程目录结构

main.xml

 

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  1. <?xml version="1.0" encoding="utf-8"?> 
  2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
  3.     android:layout_width="fill_parent" 
  4.     android:layout_height="fill_parent" 
  5.     android:orientation="vertical" > 
  6.  
  7.     <TabHost  
  8.         android:id="@+id/tablehost" 
  9.         android:layout_width="fill_parent" 
  10.         android:layout_height="fill_parent"> 
  11.         <LinearLayout android:orientation="vertical" 
  12.                       android:layout_width="fill_parent" 
  13.                       android:layout_height="fill_parent"> 
  14.             <TabWidget  
  15.                 android:id="@android:id/tabs" 
  16.                 android:layout_height="wrap_content" 
  17.                 android:layout_width="fill_parent"/> 
  18.                 <FrameLayout  
  19.                     android:id="@android:id/tabcontent" 
  20.                     android:layout_width="fill_parent" 
  21.                     android:layout_height="fill_parent"> 
  22.                 </FrameLayout> 
  23.              
  24.         </LinearLayout> 
  25.     </TabHost> 
  26. </LinearLayout> 
[html] view plaincopyprint?
  1. <?xmlversion="1.0"encoding="utf-8"?> 
  2. <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android" 
  3.     android:layout_width="fill_parent" 
  4.     android:layout_height="fill_parent" 
  5.     android:orientation="vertical"> 
  6.  
  7.     <TabHost  
  8.         android:id="@+id/tablehost" 
  9.         android:layout_width="fill_parent" 
  10.         android:layout_height="fill_parent"> 
  11.         <LinearLayoutandroid:orientation="vertical" 
  12.                       android:layout_width="fill_parent" 
  13.                       android:layout_height="fill_parent"> 
  14.             <TabWidget  
  15.                 android:id="@android:id/tabs" 
  16.                 android:layout_height="wrap_content" 
  17.                 android:layout_width="fill_parent"/> 
  18.                 <FrameLayout  
  19.                     android:id="@android:id/tabcontent" 
  20.                     android:layout_width="fill_parent" 
  21.                     android:layout_height="fill_parent"> 
  22.                 </FrameLayout> 
  23.              
  24.         </LinearLayout> 
  25.     </TabHost> 
  26. </LinearLayout>  
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TabHost 
        android:id="@+id/tablehost"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
        <LinearLayout android:orientation="vertical"
                      android:layout_width="fill_parent"
                      android:layout_height="fill_parent">
            <TabWidget 
                android:id="@android:id/tabs"
                android:layout_height="wrap_content"
                android:layout_width="fill_parent"/>
                <FrameLayout 
                    android:id="@android:id/tabcontent"
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent">
                </FrameLayout>
            
        </LinearLayout>
    </TabHost>
</LinearLayout>

 

home.xml

 

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  1. <?xml version="1.0" encoding="utf-8"?> 
  2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
  3.      android:layout_width="match_parent" 
  4.      android:layout_height="fill_parent" 
  5.      android:background="#0000FF" 
  6.      android:id="@+id/home" 
  7.      android:orientation="vertical"> 
  8.      
  9.     <TextView 
  10.          android:layout_width="fill_parent" 
  11.          android:layout_height="wrap_content" 
  12.          android:text="@string/home" 
  13.     /> 
  14.      
  15. </LinearLayout> 
[html] view plaincopyprint?
  1. <?xmlversion="1.0"encoding="utf-8"?> 
  2. <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android" 
  3.      android:layout_width="match_parent" 
  4.      android:layout_height="fill_parent" 
  5.      android:background="#0000FF" 
  6.      android:id="@+id/home" 
  7.      android:orientation="vertical"> 
  8.      
  9.     <TextView 
  10.          android:layout_width="fill_parent" 
  11.          android:layout_height="wrap_content" 
  12.          android:text="@string/home" 
  13.     /> 
  14.      
  15. </LinearLayout>  
<?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="fill_parent"
	 android:background="#0000FF"
	 android:id="@+id/home"
	 android:orientation="vertical">
    
    <TextView
	     android:layout_width="fill_parent"
	     android:layout_height="wrap_content"
	     android:text="@string/home"
    />
    
</LinearLayout>

其他3个布局文件跟home.xml一样，只是TextView的内容不同，这里就不给出代码了。

 

 

TabHostActivity.java

 

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  1. package cn.bdqn.tabhost; 
  2.  
  3. import android.app.Activity; 
  4. import android.os.Bundle; 
  5. import android.view.LayoutInflater; 
  6. import android.widget.TabHost; 
  7. import android.widget.TabHost.TabSpec; 
  8.  
  9. public class TabHostActivity extends Activity { 
  10.     @Override 
  11.     public void onCreate(Bundle savedInstanceState) { 
  12.         super.onCreate(savedInstanceState); 
  13.         setContentView(R.layout.main); 
  14.         //取得TabHost 
  15.         TabHost tabhost = (TabHost) findViewById(R.id.tablehost); 
  16.         tabhost.setup(); 
  17.         LayoutInflater inflater = LayoutInflater.from(this); 
  18.         //把配置文件转换为显示TabHost内容的FrameLayout中的层级 
  19.         inflater.inflate(R.layout.home, tabhost.getTabContentView()); 
  20.         inflater.inflate(R.layout.comment, tabhost.getTabContentView()); 
  21.         inflater.inflate(R.layout.save, tabhost.getTabContentView()); 
  22.         inflater.inflate(R.layout.more, tabhost.getTabContentView()); 
  23.         //设置HOME标签 
  24.         TabSpec spec1 = tabhost.newTabSpec("HOME").setIndicator("HOME"); 
  25.         //设置HOME模块显示内容 
  26.         spec1.setContent(R.id.home); 
  27.         tabhost.addTab(spec1); 
  28.          
  29.         TabSpec spec2 = tabhost.newTabSpec("COMMENT").setIndicator("COMMENT"); 
  30.         spec2.setContent(R.id.comment); 
  31.         tabhost.addTab(spec2); 
  32.          
  33.         TabSpec spec3 = tabhost.newTabSpec("SAVE").setIndicator("SAVE"); 
  34.         spec3.setContent(R.id.save); 
  35.         tabhost.addTab(spec3); 
  36.          
  37.         TabSpec spec4 = tabhost.newTabSpec("MORE").setIndicator("MORE"); 
  38.         spec4.setContent(R.id.more); 
  39.         tabhost.addTab(spec4); 
  40.     } 
  41. } 
[html] view plaincopyprint?
  1. package cn.bdqn.tabhost; 
  2.  
  3. import android.app.Activity; 
  4. import android.os.Bundle; 
  5. import android.view.LayoutInflater; 
  6. import android.widget.TabHost; 
  7. import android.widget.TabHost.TabSpec; 
  8.  
  9. public class TabHostActivity extends Activity { 
  10.     @Override 
  11.     public void onCreate(Bundle savedInstanceState) { 
  12.         super.onCreate(savedInstanceState); 
  13.         setContentView(R.layout.main); 
  14.         //取得TabHost 
  15.         TabHost tabhost = (TabHost) findViewById(R.id.tablehost); 
  16.         tabhost.setup(); 
  17.         LayoutInflater inflater = LayoutInflater.from(this); 
  18.         //把配置文件转换为显示TabHost内容的FrameLayout中的层级 
  19.         inflater.inflate(R.layout.home, tabhost.getTabContentView()); 
  20.         inflater.inflate(R.layout.comment, tabhost.getTabContentView()); 
  21.         inflater.inflate(R.layout.save, tabhost.getTabContentView()); 
  22.         inflater.inflate(R.layout.more, tabhost.getTabContentView()); 
  23.         //设置HOME标签 
  24.         TabSpec spec1 = tabhost.newTabSpec("HOME").setIndicator("HOME"); 
  25.         //设置HOME模块显示内容 
  26.         spec1.setContent(R.id.home); 
  27.         tabhost.addTab(spec1); 
  28.          
  29.         TabSpec spec2 = tabhost.newTabSpec("COMMENT").setIndicator("COMMENT"); 
  30.         spec2.setContent(R.id.comment); 
  31.         tabhost.addTab(spec2); 
  32.          
  33.         TabSpec spec3 = tabhost.newTabSpec("SAVE").setIndicator("SAVE"); 
  34.         spec3.setContent(R.id.save); 
  35.         tabhost.addTab(spec3); 
  36.          
  37.         TabSpec spec4 = tabhost.newTabSpec("MORE").setIndicator("MORE"); 
  38.         spec4.setContent(R.id.more); 
  39.         tabhost.addTab(spec4); 
  40.     } 
  41. }  
package cn.bdqn.tabhost;

import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;

public class TabHostActivity extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        //取得TabHost
        TabHost tabhost = (TabHost) findViewById(R.id.tablehost);
        tabhost.setup();
        LayoutInflater inflater = LayoutInflater.from(this);
        //把配置文件转换为显示TabHost内容的FrameLayout中的层级
        inflater.inflate(R.layout.home, tabhost.getTabContentView());
        inflater.inflate(R.layout.comment, tabhost.getTabContentView());
        inflater.inflate(R.layout.save, tabhost.getTabContentView());
        inflater.inflate(R.layout.more, tabhost.getTabContentView());
        //设置HOME标签
        TabSpec spec1 = tabhost.newTabSpec("HOME").setIndicator("HOME");
        //设置HOME模块显示内容
        spec1.setContent(R.id.home);
        tabhost.addTab(spec1);
        
        TabSpec spec2 = tabhost.newTabSpec("COMMENT").setIndicator("COMMENT");
        spec2.setContent(R.id.comment);
        tabhost.addTab(spec2);
        
        TabSpec spec3 = tabhost.newTabSpec("SAVE").setIndicator("SAVE");
        spec3.setContent(R.id.save);
        tabhost.addTab(spec3);
        
        TabSpec spec4 = tabhost.newTabSpec("MORE").setIndicator("MORE");
        spec4.setContent(R.id.more);
        tabhost.addTab(spec4);
    }
}

 

第二种方式(继承TabActivity)：

工程目录结构

home.xml

 

[html] view plaincopyprint?
  1. <?xml version="1.0" encoding="utf-8"?> 
  2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
  3.     android:layout_width="fill_parent" 
  4.     android:layout_height="fill_parent" 
  5.     android:orientation="vertical" 
  6.     android:background="@drawable/a"> 
  7.  
  8.     <TextView 
  9.         android:layout_width="fill_parent" 
  10.         android:layout_height="wrap_content" 
  11.         android:text="Hello world! HomeActivty" /> 
  12.  
  13. </LinearLayout> 
[html] view plaincopyprint?
  1. <?xmlversion="1.0"encoding="utf-8"?> 
  2. <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android" 
  3.     android:layout_width="fill_parent" 
  4.     android:layout_height="fill_parent" 
  5.     android:orientation="vertical" 
  6.     android:background="@drawable/a"> 
  7.  
  8.     <TextView 
  9.         android:layout_width="fill_parent" 
  10.         android:layout_height="wrap_content" 
  11.         android:text="Hello world! HomeActivty"/> 
  12.  
  13. </LinearLayout>  
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:background="@drawable/a">

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Hello world! HomeActivty" />

</LinearLayout>

其他3个布局文件跟这个一样。

 

 

MainActivity.java

 

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  1. package com.tablehost.activity; 
  2.  
  3. import android.app.Activity; 
  4. import android.app.TabActivity; 
  5. import android.content.Intent; 
  6. import android.os.Bundle; 
  7. import android.speech.SpeechRecognizer; 
  8. import android.widget.TabHost; 
  9. import android.widget.TabHost.TabSpec; 
  10.  
  11. public class MainActivity extends TabActivity { 
  12.     @Override 
  13.     public void onCreate(Bundle savedInstanceState) { 
  14.         super.onCreate(savedInstanceState); 
  15.         //获取TabHost组件 
  16.         TabHost tabHost = getTabHost(); 
  17.         //新建一个标签页 
  18.         TabSpec tabSpec1 = (TabSpec)tabHost.newTabSpec("HOME").setIndicator("HOME"); 
  19.         //给标签页设置内容 
  20.         tabSpec1.setContent(new Intent(MainActivity.this,HomeActivity.class)); 
  21.         //把标签页添加到TabHost当中去 
  22.         tabHost.addTab(tabSpec1); 
  23.          
  24.         TabSpec tabSpec2 = (TabSpec)tabHost.newTabSpec("COMMENT").setIndicator("COMMENT"); 
  25.         tabSpec2.setContent(new Intent(MainActivity.this,CommentActivity.class)); 
  26.         tabHost.addTab(tabSpec2); 
  27.          
  28.         TabSpec tabSpec3 = (TabSpec)tabHost.newTabSpec("SAVE").setIndicator("SAVE"); 
  29.         tabSpec3.setContent(new Intent(MainActivity.this,SaveActivity.class)); 
  30.         tabHost.addTab(tabSpec3); 
  31.          
  32.         TabSpec tabSpec4 = (TabSpec)tabHost.newTabSpec("MORE").setIndicator("MORE"); 
  33.         tabSpec4.setContent(new Intent(MainActivity.this,MoreActivity.class)); 
  34.         tabHost.addTab(tabSpec4); 
  35.     } 
  36. } 
[html] view plaincopyprint?
  1. package com.tablehost.activity; 
  2.  
  3. import android.app.Activity; 
  4. import android.app.TabActivity; 
  5. import android.content.Intent; 
  6. import android.os.Bundle; 
  7. import android.speech.SpeechRecognizer; 
  8. import android.widget.TabHost; 
  9. import android.widget.TabHost.TabSpec; 
  10.  
  11. public class MainActivity extends TabActivity { 
  12.     @Override 
  13.     public void onCreate(Bundle savedInstanceState) { 
  14.         super.onCreate(savedInstanceState); 
  15.         //获取TabHost组件 
  16.         TabHost tabHost = getTabHost(); 
  17.         //新建一个标签页 
  18.         TabSpec tabSpec1 = (TabSpec)tabHost.newTabSpec("HOME").setIndicator("HOME"); 
  19.         //给标签页设置内容 
  20.         tabSpec1.setContent(new Intent(MainActivity.this,HomeActivity.class)); 
  21.         //把标签页添加到TabHost当中去 
  22.         tabHost.addTab(tabSpec1); 
  23.          
  24.         TabSpec tabSpec2 = (TabSpec)tabHost.newTabSpec("COMMENT").setIndicator("COMMENT"); 
  25.         tabSpec2.setContent(new Intent(MainActivity.this,CommentActivity.class)); 
  26.         tabHost.addTab(tabSpec2); 
  27.          
  28.         TabSpec tabSpec3 = (TabSpec)tabHost.newTabSpec("SAVE").setIndicator("SAVE"); 
  29.         tabSpec3.setContent(new Intent(MainActivity.this,SaveActivity.class)); 
  30.         tabHost.addTab(tabSpec3); 
  31.          
  32.         TabSpec tabSpec4 = (TabSpec)tabHost.newTabSpec("MORE").setIndicator("MORE"); 
  33.         tabSpec4.setContent(new Intent(MainActivity.this,MoreActivity.class)); 
  34.         tabHost.addTab(tabSpec4); 
  35.     } 
  36. }  
package com.tablehost.activity;

import android.app.Activity;
import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.speech.SpeechRecognizer;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;

public class MainActivity extends TabActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //获取TabHost组件
        TabHost tabHost = getTabHost();
        //新建一个标签页
        TabSpec tabSpec1 = (TabSpec)tabHost.newTabSpec("HOME").setIndicator("HOME");
        //给标签页设置内容
        tabSpec1.setContent(new Intent(MainActivity.this,HomeActivity.class));
        //把标签页添加到TabHost当中去
        tabHost.addTab(tabSpec1);
        
        TabSpec tabSpec2 = (TabSpec)tabHost.newTabSpec("COMMENT").setIndicator("COMMENT");
        tabSpec2.setContent(new Intent(MainActivity.this,CommentActivity.class));
        tabHost.addTab(tabSpec2);
        
        TabSpec tabSpec3 = (TabSpec)tabHost.newTabSpec("SAVE").setIndicator("SAVE");
        tabSpec3.setContent(new Intent(MainActivity.this,SaveActivity.class));
        tabHost.addTab(tabSpec3);
        
        TabSpec tabSpec4 = (TabSpec)tabHost.newTabSpec("MORE").setIndicator("MORE");
        tabSpec4.setContent(new Intent(MainActivity.this,MoreActivity.class));
        tabHost.addTab(tabSpec4);
    }
}

HomeActivity.java

 

 

[html] view plaincopyprint?
  1. package com.tablehost.activity; 
  2.  
  3. import android.app.Activity; 
  4. import android.os.Bundle; 
  5.  
  6. public class HomeActivity extends Activity{ 
  7.  
  8.     @Override 
  9.     protected void onCreate(Bundle savedInstanceState) { 
  10.         super.onCreate(savedInstanceState); 
  11.         setContentView(R.layout.home); 
  12.     } 
  13.      
  14. } 
[html] view plaincopyprint?
  1. package com.tablehost.activity; 
  2.  
  3. import android.app.Activity; 
  4. import android.os.Bundle; 
  5.  
  6. public class HomeActivity extends Activity{ 
  7.  
  8.     @Override 
  9.     protected void onCreate(Bundle savedInstanceState) { 
  10.         super.onCreate(savedInstanceState); 
  11.         setContentView(R.layout.home); 
  12.     } 
  13.      
  14. }  
package com.tablehost.activity;

import android.app.Activity;
import android.os.Bundle;

public class HomeActivity extends Activity{

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.home);
	}
	
}

其他三个CommentActivity.java ，SaveActivity.java，MoreActivity.java 跟 HomeActivity.java 差不多，这里不给出代码了。

 

最后在AndroidManifest.xml对Activity进行声明：

 

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  1. <activity android:name=".HomeActivity" /> 
  2.         <activity android:name=".CommentActivity" /> 
  3.         <activity android:name=".SaveActivity" /> 
  4.         <activity android:name=".MoreActivity" />

注意它的添加：

<intent-filter>                

　　　　<action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />  

</intent-filter>

posted on 2014-05-07 10:16  小飞鹰  阅读(315)  评论(0)  编辑  收藏  举报