android tabhost学习

public class TabWidgetActivity extends TabActivity {    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);setContentView(R.layout.main);Resources res = getResources(); // Resource object to get TabHost tabHost = getTabHost(); // The activity TabHostTabHost.TabSpec spec; //  TabSpec for each tabIntent intent; // Reusable Intent for each tab// Create an Intent to launch an Activity for the tab (to be reused)intent = new Intent().setClass(this, ArtistsActivity.class);//新建一个TabSpec  tabHost.newTabSpec(tag名).setIndicator("显示的名字", "图片").setContent(设置到intent);spec = tabHost.newTabSpec("artists").setIndicator("Artists", res.getDrawable(R.drawable.ic_tab_artists)).setContent(intent);tabHost.addTab(spec);//添加到TabHost// Do the same for the other tabsintent = new Intent().setClass(this, AlbumsActivity.class);spec = tabHost.newTabSpec("albums").setIndicator("Albums", res.getDrawable(R.drawable.ic_tab_albums)).setContent(intent);tabHost.addTab(spec);intent = new Intent().setClass(this, SongsActivity.class);spec = tabHost.newTabSpec("songs").setIndicator("Songs", res.getDrawable(R.drawable.ic_tab_songs)).setContent(intent);tabHost.addTab(spec);tabHost.setCurrentTab(2);//当前显示哪个tab       }    }
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