android TabHost解决下面白线

我之前做分页都是用GridView和ActivityGroup实现的.因为觉得TabHost不好用，还有就是自己水平差的原因吧.如果帮的话，重写view任何问题都可以解决，呵呵，下面请看实现过程，其实很简单.
      针对TabHost的运用，我就不多讲解了，网上例子好多，或者你也可以下载我的Demo查看，不过先声明，写的不好.
      代码片段：
[java]
public class MyActivity extends TabActivity {
    private TabWidget tabWidget;

    /** Called when the activity is first created. */
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Resources res = getResources(); // Resource object to get Drawables
        final TabHost tabHost = getTabHost(); // The activity TabHost
        TabHost.TabSpec spec; // Resusable TabSpec for each tab
        Intent 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);

        // Initialize a TabSpec for each tab and add it to the TabHost
        spec = tabHost
                .newTabSpec("artists")
                .setIndicator("Artists",
                        res.getDrawable(R.drawable.ic_tab_artists))
                .setContent(intent);
        tabHost.addTab(spec);

        // Do the same for the other tabs
        intent = new Intent().setClass(this, AlbumsActivity.class);
        spec = tabHost
                .newTabSpec("albums")
                .setIndicator("Albums",
                        res.getDrawable(R.drawable.ic_tab_artists))
                .setContent(intent);
        tabHost.addTab(spec);

        intent = new Intent().setClass(this, SongsActivity.class);
        spec = tabHost
                .newTabSpec("songs")
                .setIndicator("Songs",
                        res.getDrawable(R.drawable.ic_tab_artists))
                .setContent(intent);
        tabHost.addTab(spec);
        tabHost.setCurrentTab(2);
        View v;
        tabWidget = tabHost.getTabWidget();

        for (int i = 0; i < tabWidget.getChildCount(); i++) {
            // 获取tabview项
            v = tabWidget.getChildAt(i);
            // 设置tab背景颜色
            v.setBackgroundResource(android.R.color.white);
            // 获取textview控件，（默认为白色）
            TextView textView = (TextView) v.findViewById(android.R.id.title);
            textView.setTextColor(Color.BLACK);
            // 默认选项要处理
            if (tabHost.getCurrentTab() == i)
                v.setBackgroundResource(R.drawable.renren_sdk_pay_repair_btn);
        }
        // tabchanged的监听
        tabHost.setOnTabChangedListener(new OnTabChangeListener() {
            // tabId显示的是：newTabSpec里面的值
            @Override
            public void onTabChanged(String tabId) {
                // 首先把所有的view背景初始化了.
                for (int i = 0; i < tabHost.getTabWidget().getChildCount(); i++) {
                    View v = tabHost.getTabWidget().getChildAt(i);
                    // 设置tab背景颜色
                    v.setBackgroundResource(android.R.color.white);
                    // 选中的进行处理
                    if (tabHost.getCurrentTab() == i) {
                        v.setBackgroundResource(R.drawable.renren_sdk_pay_repair_btn);
                    }

                }

补充：移动开发 , Android ,