安卓Android的TabActivity/TabHost实现每个Tab一个Activity(图标+文字)

根据网上资料，写了一个通用的类似模板的类MyTabActivity，实现一个图标Icon+文字Label的TabActivity，应用的类只要把Icon和Label加上去，对应每个Activity，就可以建立一个TabActivity了。

1.      模板类MyTabActivity.java(可以重用)
[java]
package amao.callbye;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.app.TabActivity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.Window;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TabHost;
import android.widget.TabHost.OnTabChangeListener;
import android.widget.TabHost.TabSpec;
import android.widget.TextView;

/**
* Abstract TabActivity with icon+text TabSpec support for each Activity
* Sub class need set "layout" and "selectDrawable"(tab selected background image) in constructor
* And implement getMyTabList() to add tab configuration
*
* @author Anderson Mao, 2012-05-01
*/
public abstract class MyTabActivity extends TabActivity {
    private static String TAG_NAME = MyTabActivity.class.getSimpleName();

    private TabHost tabHost;

    private int tabLayout;
    private int selectDrawable;
    private Drawable selectBackground;

    private int textColor = Color.GRAY;
    private int selectTextColor = Color.LTGRAY;

    private Map<String, TabView> tabViewMap = new HashMap<String, TabView>();
    private String tabViewTagPrev=null;

    public abstract List<MyTab> getMyTabList();

    public MyTabActivity(int tabLayout, int selectDrawable){
        this.tabLayout = tabLayout;
        this.selectDrawable = selectDrawable;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(tabLayout);
        tabHost = getTabHost(); // Get TabHost after setContentView()
        //
        initTabHost();
    }

    private void initTabHost(){
        selectBackground = this.getResources().getDrawable(selectDrawable);

        int index = 0;
        // Create TabSpec for each MyTab. The first tab is the default
        String defaultTag = null;
        TabView defaultTabView = null;
        List<MyTab> myTabList = getMyTabList();
        for(MyTab myTab: myTabList){
            index++;
            String tag = Integer.toString(index);
            TabView view = new TabView(this, myTab.icon, myTab.text);
            TabSpec tabSpec = tabHost.newTabSpec(tag)
                    .setIndicator(view)
                    .setContent(new Intent(this, myTab.activity))
                    ;
            tabViewMap.put(tag, view);
            tabHost.addTab(tabSpec);
            if(defaultTag == null){
                defaultTag = tag;
                defaultTabView = view;
            }
        }
        // Listener on tab change
        tabHost.setOnTabChangedListener( new OnTabChangeListener(){
            @Override
            public void onTabChanged(String tabId){
                Log.d(TAG_NAME,"change tab: id="+tabId+", prevId="+tabViewTagPrev);
                if(tabViewTagPrev!=null){
                    // Reset prev tab
                    TabView tvPrev = tabViewMap.get(tabViewTagPrev);
                    if(tvPrev!=null){
                        tvPrev.setBackgroundDrawable(null);
                        tvPrev.textView.setTextColor(textColor);
                    }
                }
                // Set current selected tab
&nbs

补充：移动开发 , Android ,