Android界面开发之切换卡TabWidget用法

学习使用TabActivity很有必要...用多了自然会顺手多了

1.Android界面开发之切换卡TabWidget用法

2.TabWidget/TabHost的两种使用方法
http://gundumw100.iteye.com/blog/853967
3.Android中TabHost切换不同的Activity

tab.xml

"1.0" encoding="utf-8"?>
""
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">

android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">

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

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

android:id="@+id/textview1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="this is a tab" />

android:id="@+id/textview2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="this is another tab" />

android:id="@+id/textview3"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="this is a third tab" />

package com.yarin.android.Examples_04_29;

import android.app.AlertDialog;
import android.app.Dialog;
import android.app.TabActivity;
import android.content.DialogInterface;
import android.graphics.Color;
import android.os.Bundle;
import android.widget.TabHost;
import android.widget.TabHost.OnTabChangeListener;

public class Activity01 extends TabActivity
{
//声明TabHost对象
TabHost mTabHost;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.tab);

//取得TabHost对象
mTabHost = getTabHost();

/* 为TabHost添加标签 */
//新建一个newTabSpec(newTabSpec)
//设置其标签和图标(setIndicator)
//设置内容(setContent)
mTabHost.addTab(mTabHost.newTabSpec("tab_test1")
.setIndicator("TAB 1",getResources().getDrawable(R.drawable.img1))
.setContent(R.id.textview1));
mTabHost.addTab(mTabHost.newTabSpec("tab_test2")
.setIndicator("TAB 2",getResources().getDrawable(R.drawable.img2))
.setContent(R.id.textview2));
mTabHost.addTab(mTabHost.newTabSpec("tab_test3")
.setIndicator("TAB 3",getResources().getDrawable(R.drawable.img3))
.setContent(R.id.textview3));

//设置TabHost的背景颜色
mTabHost.setBackgroundColor(Color.argb(150, 22, 70, 150));
//设置TabHost的背景图片资源
//mTabHost.setBackgroundResource(R.drawable.bg0);

//设置当前显示哪一个标签
mTabHost.setCurrentTab(0);

//标签切换事件处理，setOnTabChangedListener
mTabHost.setOnTabChangedListener(new OnTabChangeListener()
{
// TODO Auto-generated method stub
@Override
public void onTabChanged(String tabId)
{
Dialog dialog = new AlertDialog.Builder(Activity01.this)
.setTitle("提示")
.setMessage("当前选中："+tabId+"标签")
.setPositiveButton("确定",
new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int whichButton)
{
dialog.cancel();
}
}).create();//创建按钮

dialog.show();
}
});
}
}