Android™ for Programmers: An App-Driven Approach

12. Slideshow App: Gallery and Media Library Access, Built-In Content Providers, MediaPlayer, Image Transitions, Custom ListActivity Layouts and the View-Holder Pattern

Objectives

In this chapter you’ll:

• Use Intents and content providers to allow the user to select pictures and music from a device’s Gallery and media library, respectively.

• Launch Intents that return results.

• Use a MediaPlayer to play music from the device’s media library during the slideshow.

• Customize a ListActivity’s layout.

• Use the view holder pattern to improve performance when using complex ListView-item layouts.

• Create a custom GUI for an AlertDialog to allow ...