关于Android(安卓)TabHost切换Tab字体的颜色背景颜色改变

最近在做一个平板电脑点餐的系统，要用到TabHost，不太好写，写好了分享给大家，先上图片，默认效果：

切换后效果

先是layout文件夹中的布局文件，代码如下：

android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>

android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="@drawable/category_bg"
android:padding="0dp" >

android:id="@android:id/tabs"
android:layout_width="wrap_content"
android:layout_height="40dp"/>

android:id="@android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/context_bg"
android:padding="0dp" />

然后是java文件，

package com.dzdc.activity;import android.app.TabActivity;import android.content.Intent;import android.graphics.Typeface;import android.os.Bundle;import android.view.KeyEvent;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.widget.TabHost;import android.widget.TabHost.OnTabChangeListener;import android.widget.TextView;import com.dzdc.R;@SuppressWarnings("deprecation")public class IndexActivity extends TabActivity {private String[] tabMenu = { "热菜", "冷菜", "海鲜", "川菜", "酒饮", "招牌菜" };private Intent intent0, intent1, intent2, intent3, intent4, intent5;private Intent[] intents = { intent0, intent1, intent2, intent3, intent4,intent5 };private TabHost.TabSpec tabSpec0, tabSpec1, tabSpec2, tabSpec3, tabSpec4,tabSpec5;private TabHost.TabSpec[] tabSpecs = { tabSpec0, tabSpec1, tabSpec2,tabSpec3, tabSpec4, tabSpec5 };private TabHost tabHost = null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);// 去掉标题栏getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);setContentView(R.layout.index);tabHost = getTabHost();for (int i = 0; i < tabMenu.length; i++) {intents[i] = new Intent();intents[i].setClass(this, IndexContentActivity.class);tabSpecs[i] = tabHost.newTabSpec(tabMenu[i]);tabSpecs[i].setIndicator(tabMenu[i]);// 设置文字tabSpecs[i].setContent(intents[i]);// 设置该页的内容tabHost.addTab(tabSpecs[i]);// 将该页的内容添加到Tabhost}tabHost.setCurrentTabByTag(tabMenu[0]); // 设置第一次打开时默认显示的标签，updateTab(tabHost);//初始化Tab的颜色，和字体的颜色tabHost.setOnTabChangedListener(new OnTabChangedListener()); // 选择监听器}class OnTabChangedListener implements OnTabChangeListener {@Overridepublic void onTabChanged(String tabId) {tabHost.setCurrentTabByTag(tabId);System.out.println("tabid " + tabId);System.out.println("curreny after: " + tabHost.getCurrentTabTag());updateTab(tabHost);}}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {System.exit(0);return false;} else if (keyCode == KeyEvent.KEYCODE_MENU&& event.getRepeatCount() == 0) {return true; // 返回true就不会弹出默认的setting菜单}return false;}/**     * 更新Tab标签的颜色，和字体的颜色     * @param tabHost     */    private void updateTab(final TabHost tabHost) {        for (int i = 0; i < tabHost.getTabWidget().getChildCount(); i++) {            View view = tabHost.getTabWidget().getChildAt(i);            TextView tv = (TextView) tabHost.getTabWidget().getChildAt(i).findViewById(android.R.id.title); tv.setTextSize(16); tv.setTypeface(Typeface.SERIF, 2); // 设置字体和风格            if (tabHost.getCurrentTab() == i) {//选中                view.setBackgroundDrawable(getResources().getDrawable(R.drawable.category_current));//选中后的背景                tv.setTextColor(this.getResources().getColorStateList(     android.R.color.black));            } else {//不选中                view.setBackgroundDrawable(getResources().getDrawable(R.drawable.category_bg));//非选择的背景                tv.setTextColor(this.getResources().getColorStateList(     android.R.color.white));            }        }    }}

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