Turn On/Off Action Bar

[minhduchit]

actionbar on android 3.0 (api level 11) is a window feature that identifies the application and user location, and provides user actions and navigation modes.

to turn it on/off programmatically, call actionbar.show() and actionbar.hide().

example:

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package com[/color][color=#007700].[/color][color=#0000bb]exercise[/color][color=#007700].[/color][color=#0000bb]androidactionbar[/color][color=#007700];[/color][color=#0000bb]import android[/color][color=#007700].[/color][color=#0000bb]app[/color][color=#007700].[/color][color=#0000bb]actionbar[/color][color=#007700];[/color][color=#0000bb]import android[/color][color=#007700].[/color][color=#0000bb]app[/color][color=#007700].[/color][color=#0000bb]activity[/color][color=#007700];[/color][color=#0000bb]import android[/color][color=#007700].[/color][color=#0000bb]os[/color][color=#007700].[/color][color=#0000bb]bundle[/color][color=#007700];[/color][color=#0000bb]import android[/color][color=#007700].[/color][color=#0000bb]view[/color][color=#007700].[/color][color=#0000bb]view[/color][color=#007700];[/color][color=#0000bb]import android[/color][color=#007700].[/color][color=#0000bb]widget[/color][color=#007700].[/color][color=#0000bb]button[/color][color=#007700];public class [/color][color=#0000bb]androidactionbaractivity [/color][color=#007700]extends [/color][color=#0000bb]activity [/color][color=#007700]{    [/color][color=#ff8000]/** called when the activity is first created. */    [/color][color=#007700]@[/color][color=#0000bb]override    [/color][color=#007700]public [/color][color=#0000bb]void oncreate[/color][color=#007700]([/color][color=#0000bb]bundle savedinstancestate[/color][color=#007700]) {        [/color][color=#0000bb]super[/color][color=#007700].[/color][color=#0000bb]oncreate[/color][color=#007700]([/color][color=#0000bb]savedinstancestate[/color][color=#007700]);        [/color][color=#0000bb]setcontentview[/color][color=#007700]([/color][color=#0000bb]r[/color][color=#007700].[/color][color=#0000bb]layout[/color][color=#007700].[/color][color=#0000bb]main[/color][color=#007700]);                [/color][color=#0000bb]button showactionbar [/color][color=#007700]= ([/color][color=#0000bb]button[/color][color=#007700])[/color][color=#0000bb]findviewbyid[/color][color=#007700]([/color][color=#0000bb]r[/color][color=#007700].[/color][color=#0000bb]id[/color][color=#007700].[/color][color=#0000bb]showactionbar[/color][color=#007700]);        [/color][color=#0000bb]button hideactionbar [/color][color=#007700]= ([/color][color=#0000bb]button[/color][color=#007700])[/color][color=#0000bb]findviewbyid[/color][color=#007700]([/color][color=#0000bb]r[/color][color=#007700].[/color][color=#0000bb]id[/color][color=#007700].[/color][color=#0000bb]hideactionbar[/color][color=#007700]);                [/color][color=#0000bb]showactionbar[/color][color=#007700].[/color][color=#0000bb]setonclicklistener[/color][color=#007700](new [/color][color=#0000bb]button[/color][color=#007700].[/color][color=#0000bb]onclicklistener[/color][color=#007700](){   @[/color][color=#0000bb]override   [/color][color=#007700]public [/color][color=#0000bb]void onclick[/color][color=#007700]([/color][color=#0000bb]view arg0[/color][color=#007700]) {    [/color][color=#0000bb]actionbar actionbar [/color][color=#007700]= [/color][color=#0000bb]getactionbar[/color][color=#007700]();    [/color][color=#0000bb]actionbar[/color][color=#007700].[/color][color=#0000bb]show[/color][color=#007700]();   }});                [/color][color=#0000bb]hideactionbar[/color][color=#007700].[/color][color=#0000bb]setonclicklistener[/color][color=#007700](new [/color][color=#0000bb]button[/color][color=#007700].[/color][color=#0000bb]onclicklistener[/color][color=#007700](){   @[/color][color=#0000bb]override   [/color][color=#007700]public [/color][color=#0000bb]void onclick[/color][color=#007700]([/color][color=#0000bb]view arg0[/color][color=#007700]) {    [/color][color=#0000bb]actionbar actionbar [/color][color=#007700]= [/color][color=#0000bb]getactionbar[/color][color=#007700]();    [/color][color=#0000bb]actionbar[/color][color=#007700].[/color][color=#0000bb]hide[/color][color=#007700]();   }});    }}[/color] 

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[/color][color=#007700]<?[/color][color=#0000bb]xml version[/color][color=#007700]=[/color][color=#dd0000]"1.0" [/color][color=#0000bb]encoding[/color][color=#007700]=[/color][color=#dd0000]"utf-8"[/color][color=#0000bb]?>[/color]<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:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/hello" />    <button        android:id="@+id/showactionbar"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="show action bar" />    <button        android:id="@+id/hideactionbar"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="hide action bar" /></linearlayout>