ActionBarCompat Tutorial-Part 1(Prepare and Setup)

ActionBarCompat TutorialPart 1-Prepare and Setup

http://www.mobiletuts.meMobiletuts.me@gmail.com

04/12/2023 Mobiletuts.me mobiletuts.me@gmail.com

Action Bar

The action bar is a window feature that identifies the user location, and provides user actions and navigation modes. Using the action bar offers your users a familiar interface across applications that the system gracefully adapts for different screen configurations.

Figure 1. An action bar that includes the [1] app icon, [2] two action items, and [3] action overflow.

The action bar provides several key functions:

Provides a dedicated space for giving your app an identity and indicating the user's location in the app.Makes important actions prominent and accessible in a predictable way (such as Search).Supports consistent navigation and view switching within apps (with tabs or drop-down lists).

ActionBarActivity or Activity?

If you want to set title , logo, navigation modes for an ActionBar, you need to get a reference to ActionBar.

With sdk level higher than 11 (>=11), you can directly call getActionBar() in an Activity to fetch a reference of ActionBar which you can configure.

For sdk level lower than 11 (<=10), however, getActionBar is not supported in an Activity.

ActionBarActivity or Activity?

Google Android team released a new backward-compatible Action Bar implementation called ActionBarCompat that‘s part of the Support Library r18 during I/O 2013 . The ActionBarCompat APIs let you build the essential Action Bar design pattern into your app, with broad compatibility back to Android 2.1 (sdk7).

ActionBarActivity (android.support.v7.app.ActionBarActivity) and ActionBar (android.support.v7.app.ActionBar) was introduced within ActionBarCompat, which can be used essentially as same as Activity with ActionBar features in sdk levels higher than 11.

ActionBarActivity for Backward Compatibility

Therefore use ActionBarActivity if you need to use ActionBar while supporting sdk level lower than 11.

Get Started with ActionBarCompat

ActionBarCompat is a new API in the Android Support Library that allows you to add an Action Bar to applications targeting minSdkVersion 7 or greater. The API and integration have been designed to closely mirror the existing framework APIs, giving you an easy migration path for your existing apps.

Add ActionBarCompat as a project dependency1. Android Studio or Eclipse+ADT go to Tools->Android->SDK Manager

2. Check if the Android Support Library (revision 18) has been installed.

The version of Android support library ( Revision 18 ) is released with a new library called appcompat under the package android.support.v7.The new library facilitates users to implement action bar back up to Android 2.1 ( API Level 7 ) .

Adding ActionBarCompat support library

EclipseMake sure you have downloaded the Android Support Library using the SDK Manager.Create a libs/ directory in the root of your application project.Copy the JAR files from your Android SDK installation directory /extras/android/support/v7/appcompat/libs/android-support-v4.jar/extras/android/support/v7/appcompat/libs/android-support-v7-appcompat.jarinto your application's project libs/ directory.Right click the JAR file and select Build Path > Add to Build Path.

Android Studio Make sure you have downloaded the Android Support Repository using the SDK Manager.Open the build.gradle file for your application.Add the support library to the dependencies section. For example, to add the v7 appcompat library, add the following lines:dependencies {

…compile 'com.android.support:appcompat-v7:18.0.0'

Create New Android Project

Dependency

The Gradle build script dependency identifier for this library is as follows:com.android.support:appcompat-v7:18.0.0+This dependency notation specifies the release version 18.0.0 or higher.

When using default Activity

Default Activity support ActionBar on level higher than API 11

04/12/2023 Mobiletuts.me mobiletuts.me@gmail.comRunning on API17

Use ActionBarActivity for Backward Compatibility

Using ActionBarActivity instead of Activity

Done? Not yet, if you compile and run now, you will run into fata error caused by theme setting.

Error Caused by Theme Setting

This is cause by theme setting. When using ActionBarCompat, you can only use a Theme.AppCompat theme or its descendant (for customized theme).

Update Style Resources

The first things to update are your Activity themes so they use a Theme.AppCompat theme. If you're currently using one of the Theme.Holo themes then just replace this with the related Theme.AppCompat theme. For instance if you have the following in your AndroidManifest.xml:

<activity ... android:theme="@android:style/Theme.Holo" />You would change it to:

UseTheme.AppCompat theme or its descendant

Update Style Resources

UseTheme.AppCompat theme or its descendantIf you don’t want to change your activities’ theme setting one by one, you can change the theme setting for application in AndroidManifest.xml: <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme">

<style name="AppTheme" parent="AppBaseTheme"></style>

Becareful with values-v11/14 When you update the style resource files, do update all the styles.xml in values folder and the possible values-v11 and values-v14 folder. Cause your app may load styles.xml file in values-v1X folder according to target Android API level!

Try again, it works now!

Running on API17

Add More Actions on Action Bar

In the following sections, I will show how to add Actions such as Search to Action Bar.

You can download these icons which you can use for Actions from Download the Action Bar Icon Pack

Then copy the icons you need to drawable folders. Here I copied 2_action_search.png files to drawable-hdpi, drawable-xhdpi and drawable-mdpi folders.

Structure of Action Bar Icon Pack

Modify Menu Resources

As with the standard Action Bar in Android 3.0 and later versions, action items are added via the options menu. The difference with ActionBarCompat is that you need to modify your Menu resource files so that any action item attributes come from ActionBarCompat's XML namespace.

Now, you did it.

Compile and run again.

Running on API 17 Running on API 7

To be continued

• In next tutorial, I will show you how to 1. Configure menu items;2. Add menu items callback (how to interact

with user through Action Bar);3. Something else

ActionBarCompat Tutorial-Part 1(Prepare and Setup)

Technology

Apostila: tutorial bios setup ide

Tutorial on Basic Android Setup - Stanford Universityweb.stanford.edu/class/ee368/Android/Tutorial-1-Basic-Android... · Tutorial on Basic Android Setup EE368/CS232 Digital Image

Tutorial Setup projeto JADE e ROS

Tutorial Setup Wonderware Intouch 10

Tutorial Quartus Install and Verify Setup

Tutorial on Basic Android Setup - Stanford Universityweb.stanford.edu/class/ee368/Android/Tutorial-1.pdf · 2018. 12. 27. · 1 Tutorial on Basic Android Setup EE368/CS232 Digital

Tutorial: Setup for Android Development

Inno Setup - Tutorial Avanzado

Tutorial Membuat File Setup Dan Menyimpannya Ke CD

OMS Studio Setup Tutorial

MUBI Bravia Setup Tutorial

OmniUbuntu Setup Tutorial for Dummieslinuxomnia.sourceforge.net/Howto.pdfOmniUbuntu Setup Tutorial for Dummies REQUIREMENTS: To install OmniUbuntu to your computer, you will need :

edddison Tutorial edddison for Unity 3D – Setup and …edddison.com/.../edddison-for-Unity-3D-Setup-and-first-steps_-V1.6.pdf · edddison Tutorial edddison for Unity 3D – Setup

Globus Endpoint Setup and Configuration - XSEDE14 Tutorial

Advanced GetResponse Setup Tutorial

Create a fusesite website setup tutorial

Prepare & Setup Win Serv 2008 Bahasa

Tutorial on Basic Android Setup - Stanford University

Tutorial setup Flex project with Maven

Jan 2010 Tutorial 1 Teamwork Work Plan Setup