Android TabHost用法

关于Android TabHost切换Tab字体的颜色背景颜色改变

先是layout文件夹中的布局文件，代码如下：

android:layout_width=\ android:layout_height=\ android:orientation=\

android:background=\ android:padding=\

android:id=\

android:layout_width=\ android:layout_height=\

android:id=\ android:layout_width=\ android:layout_height=\

android:background=\ android:padding=\

然后是java文件，

[java]

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(\

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;

@Override

protected 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 {

@Override

public void onTabChanged(String tabId) { tabHost.setCurrentTabByTag(tabId); System.out.println(\

System.out.println(\ updateTab(tabHost); } }

@Override

public 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)); } } } }

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(\

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 };

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