Download e-book for iPad: iOS 7 Development Recipes: A Problem-Solution Approach by Hans-Eric Grnlund, Joseph Hoffman, Shawn Grimes, Colin

Tablets E Readers

By Hans-Eric Grnlund, Joseph Hoffman, Shawn Grimes, Colin Francis

ISBN-10: 1430259590

ISBN-13: 9781430259596

ISBN-10: 1430259604

ISBN-13: 9781430259602

iOS 7 improvement Recipes: A Problem-Solution Approach is your code reference and advisor to constructing ideas at the iPad, iPhone, and different iOS 7 SDK units and systems. This publication offers in-depth code samples and discussions for eventualities that builders face each day. you will find a variety of examples of real-world instances that may help you construct totally sensible purposes fast and successfully.

The recipes incorporated during this ebook are huge in scope and feature been aimed at the pro developer. you will find transparent and concise code samples accompanying each one recipe, and you'll be awarded with state of the art strategies that bring about the easiest that the iOS 7 SDK has to supply. The recipes include:

  • Working with automobile format to construct versatile consumer interfaces that adapt to various reveal sizes
  • Building purposes that contain multimedia
  • Building location-aware apps
  • Understanding most sensible practices for program layout and improvement

You'll locate this publication to be an crucial reference for all of your iOS development.

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Additional resources for iOS 7 Development Recipes: A Problem-Solution Approach

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Like all things boring, you’re better off dealing with them straight away. One thing you can do to make the effort easier is to create a default error handler—a single piece of code that can handle most of your errors. This recipe shows you how to set up a simple error handler that, based on the error object you provide, alerts the user and even provides recovery options for the user when available. Setting Up a Framework for Error Handling By convention in iOS, fatal, non-recoverable errors are implemented using exceptions.

M and implement the initWithError: method, as shown in Listing 1-19. Listing 1-19. fatalError = fatalError; } return self; } Finally, implement the clickedButtonAtIndex: delegate method so as to abort in case of a fatal error. As you can see from the code that follows, you also release the delegate by removing it from the retainedDelegates array, as shown in Listing 1-20. CHAPTER 1: Application Recipes 37 Listing 1-20. fatalError) { // In case of a fatal error, abort execution abort(); } // Job is finished, release this delegate [retainedDelegates removeObject:self]; } If you rerun the app now and tap the “Fake a Fatal Error” button, the app will abort execution right after you’ve dismissed the error message if you tap the “Shut Down” button (see Figure 1-36).

These have been edited out, as have the elements in the status bar. Even though there is support for language-specific versions of the launch images, it’s suggested you don’t use it due to the increased amount of space the additional launch images will require. Launch Image Files Depending on the nature of your app and which devices it supports, you’ll need to create one or more launch images. Including a launch image in your app is just a matter of adding it to the project. In the past, simple naming conventions told iOS how to categorize images and their appropriate sizes depending on which device is used.

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iOS 7 Development Recipes: A Problem-Solution Approach by Hans-Eric Grnlund, Joseph Hoffman, Shawn Grimes, Colin Francis

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