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Among all the things that mobile phones are and have become, one definite trend is the increase
in the media production and consumption capabilities they offer. This trend began with the
advent of the camera phone in the late 1990s, and over the last few years has dramatically taken
off with the surging popularity of smart phones. In terms of media capabilities, today’s mobile
handsets are simultaneously cameras, photo albums, camcorders, movie players, music players,
dictation machines, and potentially much more.
In particular, Android has rich capabilities available within the SDK that this book seeks to
illuminate with discussion and examples so that you can get a jump-start on developing the next
generation media applications. It walks you through examples that not only show how to display
and play media but also allow you to take advantage of the camera, microphone, and video
capture capabilities. It is organized more or less into four sections: The first four chapters deal
with imaging; the second four handle audio; and the final four are about video and harnessing
web services for finding and sharing media.
The examples presented within get a bit more challenging as the book progresses, as the
amount of work that needs to be done to develop applications that harness the capabilities
increases. Regardless, with some familiarity with Android application development you, the
reader should be able to jump to any section and utilize the discussion and example code to
create an application that utilizes the capabilities presented.
The examples are generally in the form of a full class that extends an Activity targeted to run
with the SDK version 4 (Android 1.6) or later. The examples also include the contents of an XML
layout file and in many cases the contents of the AndroidManifest.xml file. It is assumed that you
will be using Eclipse (Galileo or later) with the ADT plugin (0.9.9 or later) and using the Android
SDK (r7 or later). Since much of the book is geared toward audio and video, I advise that you run
the examples on a handset (running Android 1.6 or later) rather than on the emulator, because in
many cases the examples do not function on the emulator.
I am excited to see what the future of media applications on mobile devices is. It is my hope
that through this book I can help you to create and define that future. I look forward to seeing
your Android media applications in action.
With all that out of the way, let’s get started
پسورد : www.android-learn.ir