實現TabHost的兩種方法

1.通過繼承Activity實現

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>    
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    android:id="@+id/hometabs"  
    android:orientation="vertical"  
    android:layout_width="fill_parent"    
    android:layout_height="fill_parent">       
    <TabHost android:id="@+id/tabhost"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"  
        android:layout_alignParentBottom="true" >          
        <LinearLayout  
            android:orientation="vertical"  
            android:layout_width="fill_parent"  
            android:layout_height="fill_parent">              
             <FrameLayout android:id="@android:id/tabcontent"  
                  android:layout_width="fill_parent"  
                  android:layout_height="wrap_content">  
                    <TextView android:id="@+id/view1"  
                        android:layout_width="fill_parent"  
                        android:layout_height="fill_parent"/>  
                    <TextView android:id="@+id/view2"  
                        android:layout_width="fill_parent"  
                        android:layout_height="fill_parent"/>  
                    <TextView android:id="@+id/view3"  
                        android:layout_width="fill_parent"  
                        android:layout_height="fill_parent"/>  
             </FrameLayout>                          
              <TabWidget android:id="@android:id/tabs"   
              android:orientation="horizontal"  
              android:layout_width="fill_parent"  
              android:layout_height="wrap_content"
              android:layout_gravity="bottom">  
            </TabWidget> 
         </LinearLayout>  
    </TabHost>  
</RelativeLayout>  

MainActivity.java

package com.example.testtabhost;
import android.R.integer;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TabHost;
import android.widget.TabHost.OnTabChangeListener;
import android.widget.Toast;  
public class MainActivity extends Activity {   	
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_main);            
        TabHost tabHost = (TabHost) findViewById(R.id.tabhost);  
        tabHost.setup();                
        tabHost.addTab(tabHost.newTabSpec("tab1").setIndicator("4").setContent(R.id.view1));            
        tabHost.addTab(tabHost.newTabSpec("tab2").setIndicator("5").setContent(R.id.view3));            
        tabHost.addTab(tabHost.newTabSpec("tab3").setIndicator("6").setContent(R.id.view2));   
        tabHost.setCurrentTab(1);
        
        tabHost.setOnTabChangedListener(new OnTabChangeListener() {			
			@Override
			public void onTabChanged(String tabId) {
				// TODO Auto-generated method stub
				  if (tabId.equals("tab1")) {   
					 // Intent intent =new Intent();
					 // intent.setClass(MainActivity.this, OtherActivity.class);
					  Toast.makeText(getApplicationContext(), "1", Toast.LENGTH_SHORT).show();
				  }
				  if (tabId.equals("tab2")) {
					  Toast.makeText(getApplicationContext(), "2", Toast.LENGTH_SHORT).show();
      			  }
		          if (tabId.equals("tab3")) {
		        	  Toast.makeText(getApplicationContext(), "3", Toast.LENGTH_SHORT).show();
		       	  }
			}
		}) ;  
    } 
   
}  

2.待續

繼承TabActivity實現

activity_main.xml

<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" >  
  
    <ImageView   
        android:id="@+id/tab2"  
        android:layout_width="fill_parent"  
        android:layout_height="fill_parent"  
        android:src="@drawable/image2"/>  
    <ImageView  
        android:id="@+id/tab3"  
        android:layout_width="fill_parent"  
        android:layout_height="fill_parent"  
        android:src="@drawable/image3"/>  
  
</RelativeLayout>  

tab1_item.xml

<?xml version="1.0" encoding="utf-8"?>  
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    android:layout_width="wrap_content"  
    android:layout_height="wrap_content"  
    android:orientation="horizontal" >  
  
    <ImageView  
        android:id="@+id/image"  
        android:padding="10dp"  
        android:layout_width="48dp"  
        android:layout_height="48dp" />  
  
    <LinearLayout  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"  
        android:orientation="vertical" >  
  
        <LinearLayout  
            android:layout_width="fill_parent"  
            android:layout_height="wrap_content"  
            android:orientation="horizontal" >  
  
            <TextView  
                android:id="@+id/name"  
                android:paddingTop="10dp"  
                android:layout_width="wrap_content"  
                android:layout_height="wrap_content" />  
  
            <TextView  
                android:id="@+id/publish"  
                android:layout_width="fill_parent"  
                android:layout_height="wrap_content"  
                android:paddingTop="10dp"  
                android:gravity="right" />  
        </LinearLayout>  
  
        <TextView  
            android:id="@+id/content"  
            android:paddingTop="10dp"  
            android:paddingBottom="10dp"  
            android:layout_width="fill_parent"  
            android:layout_height="wrap_content" />  
    </LinearLayout>  
  
</LinearLayout>

tab1_main.xml

<LinearLayout 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" >    
    <ListView  
        android:id="@+id/list"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content" >  
    </ListView>    
</LinearLayout>  

MainActivity.java

package com.example.testtabhostandlistview;

import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.widget.TabHost;
  
@SuppressWarnings("deprecation")
public class MainActivity extends TabActivity {  
  
    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        //setContentView(R.layout.activity_main);  
        TabHost tabHost=getTabHost();  
        LayoutInflater.from(this).inflate(R.layout.activity_main,tabHost.getTabContentView(), true);  
        Intent intent=new Intent();  
        intent.setClass(this, Tab01Activity.class);  
        tabHost.addTab(tabHost.newTabSpec("tab1").setIndicator("",getResources().getDrawable(R.drawable.image1)).setContent(intent));
        tabHost.addTab(tabHost.newTabSpec("tab2").setIndicator("",getResources().getDrawable(R.drawable.image2)).setContent(R.id.tab2));  
        tabHost.addTab(tabHost.newTabSpec("tab3").setIndicator("", getResources().getDrawable(R.drawable.image3)).setContent(R.id.tab3)); 
    }     

    @Override  
    public boolean onCreateOptionsMenu(Menu menu) {  
        getMenuInflater().inflate(R.menu.activity_main, menu);  
        return true;  
    }    
}  

Tab01Activity.java

package com.example.testtabhostandlistview;  
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
  
public class Tab01Activity extends Activity {  
    private List<Map<String, ?>> data;  
    private ListView listItem;    
    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.tab1_main);  
        listItem = (ListView) this.findViewById(R.id.list);  
        data = getData();  
        SimpleAdapter adapter = new SimpleAdapter(this, data, R.layout.tab1_item,  
                new String[] { "image", "name", "publish", "content" },  
                new int[] { R.id.image, R.id.name, R.id.publish, R.id.content });  
        listItem.setAdapter(adapter);  
        listItem.setOnItemClickListener(new OnItemClickListener() {    
            @Override  
            public void onItemClick(AdapterView<?> adapter, View view, int position,  
                    long id) {  
                Map<String, Object> item=(Map<String, Object>) data.get(position);  
                Toast.makeText(getApplicationContext(), item.get("name")+"\n\n"+item.get("content"), Toast.LENGTH_LONG).show();  
                  
            }  
        });  
    }  
  
    private List<Map<String, ?>> getData() {  
        List<Map<String, ?>> data = new ArrayList<Map<String, ?>>();  
        Map<String, Object> item = new HashMap<String, Object>();  
        item.put("image", R.drawable.image1);  
        item.put("name", "世界末日");  
        item.put("publish", "1分鐘前");  
        item.put("content", "我過得還可以，不好不壞，不驚不喜，一切只是還可以。這樣的生活我覺得也挺好。");  
        data.add(item);  
        
        return data;  
    }  
    @Override  
    public boolean onCreateOptionsMenu(Menu menu) {  
        getMenuInflater().inflate(R.menu.activity_main, menu);  
        return true;  
    }  
  
}