iOS 8 Swift Programming Cookbook: Solutions & Examples for iOS Apps

By Vandad Nahavandipoor

Entirely rewritten for Apple’s fast programming language, this up to date cookbook is helping you triumph over the vexing concerns you’re more likely to face while developing apps for iOS devices.

You’ll locate thousands of latest and revised recipes for utilizing the iOS eight SDK, together with strategies for operating with overall healthiness facts and HomeKit components, improving and animating pix, storing and preserving info, sending and receiving notifications, and coping with records and folders between them. each one recipe contains pattern code on GitHub so that you can use correct away.

  • Use CloudKit APIs to shop info within the cloud with ease
  • Create customized keyboards and extensions
  • Access clients’ health-related info with HealthKit
  • Interact with add-ons contained in the user’s domestic with HomeKit
  • Create bright and reasonable person interfaces with UIKit Dynamics
  • Use the Keychain to guard your app’s data
  • Develop location-aware and multitasking-aware apps
  • Work with iOS 8’s audio and video APIs
  • Use occasion equipment UI to control calendars, dates, and events
  • Take good thing about the accelerometer and the gyroscope
  • Get operating examples for imposing gesture recognizers
  • Retrieve and manage contacts and teams from the tackle Book
  • Determine a camera’s availability and entry the photograph Library

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556 ftWe need to outline the space first: permit distanceInMeters:Double = 1_234And then current our meters in HKUnit: enable metersUnit = HKQuantity(unit: HKUnit. meterUnit(), doubleValue: distanceInMeters)Then we convert the meters to ft: enable feetValue = metersUnit. doubleValueForUnit( HKUnit. footUnit())Eventually, we'll retrieve the values as formatted and localized strings utilizing the NSLengthFormatter category: allow lengthFormatter = NSLengthFormatter() permit metersString = lengthFormatter. stringFromValue(distanceInMeters, unit: . Meter) permit feetString = lengthFormatter. stringFromValue(feetValue, unit: . Foot)And print out our values to the console very easily: println("You've pushed \(metersString)") println("You've pushed \(feetString)") Chapter 4. handling domestic home equipment with HomeKit four. zero. creation quite a few add-ons were outfitted that could engage with iOS through the years. lots of those components paintings in a house setting. for example, the projector in a cinema room contained in the residence or an adjunct that adjusts the temperature of the water in a swimming pool might be managed through Apple’s new expertise, accurately named HomeKit. this can be a framework that permits us to start up touch with those components within the context of a house. Now let’s take a look at an easy domestic setup. This condo has 4 flooring: a basement and the floor, first, and the second one flooring. the home has seven bedrooms on various flooring. The underground ground has a couple of issues that excite us. One is a cinema room with a stupendous projector and a few cozy cinema seats. The chairs are reclining chairs whose positions will be adjusted to fit each one viewer’s wishes. In entrance of the projector, a number of meters away, a white display can descend from the ceiling to hide the wall in order that the projector can undertaking there, giving us an outstanding photograph whereas taking part in video games or staring at television and video clips. We open the door from contained in the cinema room and succeed in the indoor pool. there's a equipment that permits us to hide the swimming pool with a difficult fabric that reclines to boot, in order that we will disguise the pool after we don’t want it and makes convinced the children won’t fall into it at evening or whilst now not less than supervision of an grownup. We actually have a Jacuzzi with a number of switches to illuminate within in quite a few colours and to manage the warmth for the water. All of those units within the underground point of this apartment are really advanced to paintings with and require a few kind of “techy-ness” prior to anyone can relatively modify their settings. this is often the place HomeKit is available in. It permits us to construct apps which can paintings with HomeKit-ready home equipment contained in the premises of our domestic and keep an eye on them conveniently. all through this bankruptcy, i will use examples that get back to this basement setup. every little thing during this condominium should be managed with a unmarried iOS gadget. And this isn't simply contained in the residence. these kind of home equipment could be managed remotely. Let’s say you're on holiday and you have got forgotten to show the cinema room’s projector off.

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