The following is the first few sections of a chapter from The Busy Coder's Guide to Android Development, plus headings for the remaining major sections, to give you an idea about the content of the chapter.
Approximately 30 months after Google added the action bar to Android 3.0,
Google released a backport for previous devices. Referred to here as AppCompat or,
appcompat-v7 (after its library name), this adds action
bar support to Android apps, going all the way back to API Level 7.
appcompat-v7 Android Support Package artifact houses AppCompat. Version 21
and higher of this artifact change the way that AppCompat looks, to try to
not only backport the action bar, but to backport a bit of the Material Design
This chapter will outline why you might want to use AppCompat and how to employ it in your Android applications.
Understanding this chapter requires that you have read the core chapters, particularly the one on the action bar.
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