TabActivity的使用

步驟一：MainActivity 界面的模板：

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical"
        android:padding="5dp" >

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

        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:padding="5dp" />
    </LinearLayout>

</TabHost>

步驟二：Tb1Activity界面：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="Tab_1"
        android:textSize="30sp" />

    <Button
        android:layout_width="fill_parent"
        android:layout_height="50dip"
        android:text="Button" />
<p>
</p></LinearLayout>

步驟三：Tab2Activity界面：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView2"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="Tab_2"
        android:textSize="30sp" />

    <Button
        android:layout_width="fill_parent"
        android:layout_height="50dip"
        android:text="Button" />

</LinearLayout>

步驟四：在MainActivity中將TabHost實例化

package com.example.tabactivity;

import android.app.TabActivity;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;

public class MainActivity extends TabActivity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		Resources res = getResources();
		TabHost tabHost = this.getTabHost();

		TabSpec tabSpec_1 = tabHost.newTabSpec("Tab_1");
		tabSpec_1.setIndicator("Tab_1", res.getDrawable(android.R.drawable.stat_sys_download));
		tabSpec_1.setContent(new Intent(this, Tab1Activity.class));
		tabHost.addTab(tabSpec_1);
		
		TabSpec tabSpec_2 = tabHost.newTabSpec("Tab_2");
		tabSpec_2.setIndicator("Tab_2", res.getDrawable(android.R.drawable.stat_sys_download_done));
		tabSpec_2.setContent(new Intent(this, Tab2Activity.class));
		tabHost.addTab(tabSpec_2);
	}
}