Android Apps for Absolute Beginners

Android Apps for Absolute Beginners

Wallace Jackson

Language: English

Pages: 404

ISBN: 1430247886

Format: PDF / Kindle (mobi) / ePub

Anybody can start building simple apps for the Android platform, and this book will show you how!  Recently updated to include Android Jelly Bean, Android Apps for Absolute Beginners, Second Edition takes you through the process of getting your first Android apps up and running using plain English and practical examples.

This book cuts through the fog of jargon and mystery that surrounds Android apps development, and gives you simple, step-by-step instructions to get you started. 

  • Teaches Android application development in language anyone can understand, giving you the best possible start in Android development
  • Provides simple, step-by-step examples that make learning easy, allowing you to pick up the concepts without fuss
  • Offers clear code descriptions and layout so that you can get your apps running as soon as possible

This book is Android Jelly Bean compliant, but is backwards compatible to most of the previous Android releases. 

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into an empty object with a clean slate. Then, in the next three lines, we use the put() method to load the myContact ContentValues object with the parsed ContentUris URI ID and table and column values for the DISPLAY_NAME field that we wish to write, and the newName primary name string variable data (“Steve Wozniak”), using the following lines of code: myContact.clear(); myContact.put(Data.RAW_CONTACT_ID, rawContactId); myContact.put(Data.MIMETYPE, StructuredName.CONTENT_ITEM_TYPE);

explicitly tells Android what type of data the intent should be working with so that, for example, audio data doesn’t encounter an image processing routine. The type part of the Intent object allows you to specify an explicit MIME data definition or data type that, if present, overrides any inference of the data type by the Android OS. You may already be familiar with the MIME data type declarations, as they are quite common on web servers and other types of data servers. MIME TYPES MIME

will have it installed, but you can use any image-editing program you prefer, such as Photoshop CS6 or Corel Painter. So let’s fire up the GIMP 2.8 software package that we installed earlier in the book and prepare a 24-bit PNG file with transparency (alpha channel). Adding Transparency The first thing we need to do is to put the logo onto a transparency. Here are the steps to remove the white background from the logo 1. Open the MindTaffyLogoAndroidGreen.gif logo file using the GIMP File Open

suitable for lower-resolution smartphone screens. JPEG is supported, but is not recommended for Android apps because Google wants their product to look as pristine as possible, and PNG or WebP formats are the sure-fire way to accomplish this. Finally, we have GIF, the CompuServe graphic information format, a much older 8-bit file format. The use of this file format is discouraged because it has the poorest quality to file size ratio. Stay away from using GIFs for your Android apps if possible.

practical applications in creating Android applications. How Android goes about setting up an Android application. How it defines the user interfaces. How it writes to the display screen. How it communicates with other Android applications. How it interfaces with data, resources, networks, and the Internet. How it alerts users to events that are taking place inside and outside the application. How Android applications are published. How Android applications are ultimately sold,

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