Tab标签页接口---使用Intent对象

 TabHost tabHost = getTabHost();

        Intent it = new Intent();
        it.setClass(Main.this, DateTimePicker.class);
        TabSpec spec=tabHost.newTabSpec("tab1");
        spec.setContent(it);
        spec.setIndicator("ら戳㎝丁",
                getResources().getDrawable(android.R.drawable.ic_lock_idle_alarm));
        tabHost.addTab(spec);

        it = new Intent();
        it.setClass(Main.this, ProgBarDemo.class);
        spec=tabHost.newTabSpec("tab2");
        spec.setIndicator("ProgressBar",
                getResources().getDrawable(android.R.drawable.ic_dialog_alert));
        spec.setContent(it);
        tabHost.addTab(spec);

        tabHost.setCurrentTab(0);

        // 砞﹚tab夹乓砰
        TabWidget tabWidget = (TabWidget)tabHost.findViewById(android.R.id.tabs);
        View tabView = tabWidget.getChildTabViewAt(0);
        TextView tab = (TextView)tabView.findViewById(android.R.id.title);
        tab.setTextSize(20);
        tabView = tabWidget.getChildTabViewAt(1);
        tab = (TextView)tabView.findViewById(android.R.id.title);
        tab.setTextSize(20);