Book Image

Xcode 4 Cookbook

By : Steven F. Daniel
Book Image

Xcode 4 Cookbook

By: Steven F. Daniel

Overview of this book

<p>The release of iOS 6 comes packed with over 1,500 new APIs and 200 new features. Xcode 4 Cookbook will teach youhow to integrate iCloud storage and how to go about using the Facebook and OpenGraphi APIs, as well as providing you with practical step-by-step recipes covering User Interfaces, data management, multimedia, localisation services and maps, right through to application deployment to the Apple App Store. You will soon be mastering the technology and the skills needed to create some amazing applications.<br /><br />"Xcode 4 Cookbook" will help you learn how to build some powerful applications using iOS 6 and the various frameworks. You will soon master how to incorporate iCloud, Facebook, and the OpenGraph APIs and apply various image filters and transitions using Core Image integration within your applications. By using the book’s step-by-step approach, you will soon master the technology and the skills needed to create some amazing applications.<br /><br />"Xcode 4 Cookbook" provides you with the skills and knowledge and practical recipes on how to go about developing useful applications that can be used within the industry.<br /><br />You will start by learning how to go about downloading and installing the Xcode Development Tools, learn about Interface Builder to create the visual user interfaces, connecting the objects using Outlets and Actions, and learn how to compile/debug your applications.<br /><br />Finally, you will learn how to capture media with the iOS camera and play back video content using Airplay to wirelessly stream videos to an Apple TV device, using the AV Foundation framework, as well as using the Core Image and Core Graphics frameworks to create amazing image effects using the built-in features.</p>
Table of Contents (19 chapters)
Xcode 4 Cookbook
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

Fading a view in and out


In this recipe, we will take a look at how we can perform some fancy animations to views. These can be perfect for building and enhancing the user experience to produce smooth, animated animations for your applications.

Getting ready

The UIView animations are the perfect building blocks for building the visual bridge between a view's current and changed state. With views, you can visually change and create animations that link these together. Some examples include the following:

  • Moving a view around the screen

  • Updating the view's frame and bounds coordinates

  • Stretching the view's content to fill the screen regions

  • Altering the view's alpha value to support transparency

  • Hiding or showing a view

  • Altering the view's ordering to show which view is in front

  • Performing transformations and rotations to views

How to do it...

In order to see our view fade in and out, we need to modify our ViewObjectsExample application that we created in the previous recipe. Perform the following...