The app bar is the area that appears at the top of the display when an app is running and can be configured to contain a variety of different items including the status bar, toolbar, tab bar and a flexible space area. An upward scrolling motion on a list, for example, can be configured so that the app bar recedes from view and then reappears when a downward scrolling motion is performed.īeginning with an overview of the elements that can comprise an app bar, this chapter will then work through a variety of examples of app bar configuration. By making use of the CoordinatorLayout in conjunction with the AppBarLayout and CollapsingToolbarLayout containers, the app bar can be configured to display an image and to animate in and out of view. In this chapter we will be exploring the ways in which the app bar within an activity layout can be customized and made to react to the scrolling events taking place within other views on the screen. Purchase the fully updated Android Studio Chipmunk Edition of this publication in eBook ($29.99) or Print ($46.99) formatĪndroid Studio Chipmunk Essentials - Java Edition Print and eBook (PDF) editions contain 94 chapters and over 800 pages You are reading a sample chapter from the Android Studio 3.2 Edition of this book.
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