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This projects aims to provide a reusable action bar widget. The action bar replaces the default title and is therefor located at the top of the screen. The action bar highlights important actions. The action bar pattern is well documented over at Android Patterns. The action bar widget is an Library Project. This means that there's no need to copy-paste resources into your own project, simply add the action bar widget as a reference to your existing project.

The action bar: is located at the top of the screen to support navigation and highlight important functionalities replaces the title bar (which is often included into it) is best used for actions across your app, like search, refresh and compose can provide a quick link to app homeby tapping the app logo is preferably not contextual, but actions can differ from page to page

Use when You want to bring key actions on screen, so they are in sight. You don't want to hide them under the menu-button. The action bar is best used for common actions like search, refresh and compose. When screen real estate is valuable, consider putting actions in the options menu.

<!-- Variation on the Light theme that turns off the title --><style name="Theme.IOSched" parent="android:style/Theme.Light">    <item name="android:windowNoTitle">true</item>    <item name="android:windowContentOverlay">@null</item></style>

The android:windowContentOverlay is your shadow, and setting it to @null in your theme will eliminate it. You can see this in action in the Google I|O 2010 conference app, which uses many of the same UI conventions as does the new Twitter app. However, right now, the Twitter app has not yet been open-sourced, which is why I point you to the I|O app. The code fragment above is from that app's styles.xml resource.

A bunch of sample apps for Android. Simple workarounds and examples for doing things on Android. Custom Progress Bar - A customized Progress Bar for android with your own animation Drag and Drop widgets on Android Ongoing notifications on Android HTML with images in a Text View Custom Expandable List Views on Android Custom List View - Phonebook Example Custom Title Bar Android WebView, Javascrip and CSS Unzip files on Android

The concept of ActionBar has been introduced with the Twitter application for Android. More recently, we have seen this widget in the Google I/O 2010 schedule application. To sum up, an ActionBar can be considered as an advanced title bar that is capable of: containing several ActionBaritems (similar to buttons) being styled so that the general look’n'feel of the application is in accordance with the underlying brand/visual identity containing a title to show the user a summary of the screen content featuring several user interaction pattern.