改變android 選項卡的背景色

看如下代碼：

  mTabHost = (TabHost) findViewById(R.id.tabhost);        mTabHost.setup();        final TabWidget tabWidget = (TabWidget) findViewById(android.R.id.tabs);        LayoutInflater inflater_tab1 = LayoutInflater.from(this);        inflater_tab1.inflate(R.layout.mobile_phone_cashier_tab1, mTabHost                .getTabContentView());        inflater_tab1.inflate(R.layout.mobile_phone_cashier_tab2, mTabHost                .getTabContentView());        inflater_tab1.inflate(R.layout.mobile_phone_cashier_tab3, mTabHost                .getTabContentView());        // inflater_tab1.inflate(R.layout.mobile_phone_cashier_tab4, mTabHost        // .getTabContentView());        // inflater_tab1.inflate(R.layout.mobile_phone_cashier_tab5, mTabHost        // .getTabContentView());        // inflater_tab1.inflate(R.layout.mobile_phone_cashier_tab1_request,        // mTabHost        // .getTabContentView());        mTabHost.addTab(mTabHost.newTabSpec("tab1").setIndicator(                getString(R.string.sy)).setContent(R.id.FrameLayout01));        mTabHost.addTab(mTabHost.newTabSpec("tab2").setIndicator(                getString(R.string.cd)).setContent(R.id.FrameLayout02));        mTabHost.addTab(mTabHost.newTabSpec("tab3").setIndicator(                getString(R.string.jyjl)).setContent(R.id.FrameLayout03));        // mTabHost.addTab(mTabHost.newTabSpec("tab4").setIndicator(        // getString(R.string.yye)).setContent(R.id.FrameLayout04));        // mTabHost.addTab(mTabHost.newTabSpec("tab5").setIndicator(        // getString(R.string.jyjl)).setContent(R.id.FrameLayout05));        tabWidget.setBackgroundResource(R.drawable.tab_bg);        Field mBottomLeftStrip;        Field mBottomRightStrip;        for (int i = 0; i < tabWidget.getChildCount(); i++) {            final TextView tv = (TextView) tabWidget.getChildAt(i)                    .findViewById(android.R.id.title);            tabWidget.getChildAt(i).getLayoutParams().height = 40;            if (i == 0) {                tabWidget.getChildAt(i).setBackgroundResource(                        R.drawable.tab_kuang);//設定背景                tv.setTextColor(Color.rgb(202, 151, 0));            } else {                tabWidget.getChildAt(i)                        .setBackgroundResource(R.drawable.tab_bg);                tv.setTextColor(Color.WHITE);                tabWidget.getChildAt(i).setClickable(false);            }            tv.setTextSize(15);            tv.setGravity(Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM);        } 

原理就是更改系統內建的tabwidget