非常漂亮的一段代码：

public class TabhostTestActivity extends TabActivity implements

       TabContentFactory {    private String[] lables = new String[] { "首页", "消息", "朋友", "更多" };

 private int[] icons = new int[] { R.drawable.ic_home, R.drawable.ic_msg, R.drawable.ic_friend, R.drawable.ic_more };

   /** Called when the activity is first created. */

   @Override   public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);       setContentView(R.layout.tabhost);       TabHost th = getTabHost();       tabHost = getTabHost();  for (int i = 0; i < lables.length; i++) {    View view = LayoutInflater.from(this).inflate(R.layout.menu, null);   ImageView menu_ic = (ImageView) view.findViewById(R.id.menu_ic);   menu_ic.setImageResource(icons[i]);   TextView text = (TextView) view.findViewById(R.id.menu_lable);   text.setText(lables[i]);   tabHost.addTab(tabHost.newTabSpec(String.valueOf(i)).setIndicator(view).setContent(this));  }  tabHost.setCurrentTab(0);   }

 @Override

 public void onTabChanged(String tabId) {   // tabId 为newTabSpec(String tag) 中传入的字符串tag，这里tag是0,1,2,3 可以转换为整形便于判断  int tabID = Integer.valueOf(tabId);  for (int i = 0; i < mTabWidget.getChildCount(); i++) {    if (i == tabID) {     mTabWidget.getChildAt(i).setBackgroundResource(      R.drawable.indicator_selected);   } else {     mTabWidget.getChildAt(i).setBackgroundResource(      R.drawable.indicator_unselected);   }  } }

 

TabHost通过手势切换Activity

  简直帅爆了

2.ViewPager+RadioButton仿QQ效果

原理说的很明白。