Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Mastering iOS 12 Programming
  • Table Of Contents Toc
  • Feedback & Rating feedback
Mastering iOS 12 Programming

Mastering iOS 12 Programming

By : Wals
3 (2)
close
close
Mastering iOS 12 Programming

Mastering iOS 12 Programming

3 (2)
By: Wals

Overview of this book

The iOS development environment has significantly matured, and with Apple users spending more money in the App Store, there are plenty of development opportunities for professional iOS developers. However, the journey to mastering iOS development and the new features of iOS 12 is not straightforward. This book will help you make that transition smoothly and easily. With the help of Swift 4.2, you’ll not only learn how to program for iOS 12, but also how to write efficient, readable, and maintainable Swift code that maintains industry best practices. Mastering iOS 12 Programming will help you build real-world applications and reflect the real-world development flow. You will also find a mix of thorough background information and practical examples, teaching you how to start implementing your newly gained knowledge. By the end of this book, you will have got to grips with building iOS applications that harness advanced techniques and make best use of the latest and greatest features available in iOS 12.
Table of Contents (29 chapters)
close
close

Updating movies in the background


The final step in enabling background fetch for MustC is to add the application(_:performFetchWithCompletionHandler:) method to AppDelegate. As explained before, this method is called by iOS whenever the app is woken up in the background, and it allows you to perform an arbitrary amount of work. Once the app is done performing its task, it must call the completion-handler that was passed to this method.

Upon calling the completion-handler, you should inform iOS about the results of the operations you performed. It's important to correctly report this status because background fetch is intended to improve the user experience. If you falsely report to iOS that you have new data all the time, so your app is woken up more often, you're degrading the user experience. You should trust the system to judge when your app is woken up. It's in the best interest of your users, their battery life, and ultimately your app to not abuse background fetch.

To efficiently implement...

Unlock full access

Continue reading for free

A Packt free trial gives you instant online access to our library of over 7000 practical eBooks and videos, constantly updated with the latest in tech

Create a Note

Modal Close icon
You need to login to use this feature.
notes
bookmark search playlist download font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Delete Note

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Edit Note

Modal Close icon
Write a note (max 255 characters)
Cancel
Update Note

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY