显示效果如下图： 更改TabHost标签的背景颜色。 

修改思路： 监听TabHost的onTabChanged方法。

 

实现代码：

package com.tony.tabstudy; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.TabHost; import android.widget.TabHost.OnTabChangeListener; import android.widget.TabWidget; publicclass TabStudyActivity extends Activity {
        @Override publicvoid onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);         setContentView(R.layout.main); final TabHost tabHost = (TabHost) findViewById(R.id.tabHost);         tabHost.setup();         TabHost.TabSpec spec = tabHost.newTabSpec("tab1");         spec.setContent(R.id.tab1);         spec.setIndicator("主页");         tabHost.addTab(spec);         TabHost.TabSpec spec2 = tabHost.newTabSpec("tab2");         spec2.setContent(R.id.tab2);         spec2.setIndicator("主页2", getResources().getDrawable(android.R.drawable.btn_dialog));         tabHost.addTab(spec2);         tabHost.setCurrentTab(1); //初始化设置一次标签背景         updateTabBackground(tabHost); //选择时背景更改。         tabHost.setOnTabChangedListener(new OnTabChangeListener() {
                @Override publicvoid onTabChanged(String tabId) {
     updateTabBackground(tabHost);             }         });     } /**      * 更新Tab标签的背景图      * @param tabHost */ privatevoid updateTabBackground(final TabHost tabHost) {
    for (int i =0; i < tabHost.getTabWidget().getChildCount(); i++) {
                View vvv = tabHost.getTabWidget().getChildAt(i); if (tabHost.getCurrentTab() == i) {
    //选中后的背景                 vvv.setBackgroundDrawable(getResources().getDrawable(android.R.drawable.spinner_background));             } else {
    //非选择的背景                 vvv.setBackgroundDrawable(getResources().getDrawable(R.drawable.a));             }         }     } }