Download E-books Programming iOS 8: Dive Deep into Views, View Controllers, and Frameworks PDF
By Matt Neuburg
Start development apps for iOS eight with Apple’s quick programming language. If you’re grounded within the fundamentals of Xcode and the Cocoa framework, this publication presents a based rationalization of all crucial real-world iOS app parts. via deep exploration and copious code examples, you’ll find out how to create perspectives, manage view controllers, and use iOS frameworks for including good points resembling audio and video, entry to person calendars and photographs, and monitoring the device’s location.
Example code is obtainable on GitHub within the type of complete tasks for you to obtain, examine, and run.
- Build iOS apps with Swift
- Create, manage, draw, layer, and animate perspectives that reply to touch
- Use view controllers to control a number of displays in a manner that’s comprehensible to users
- Explore UIKit interface items, equivalent to scroll perspectives, desk perspectives, popovers, net perspectives, and maps
- Work with Cocoa frameworks for sensors, place, sound, and video
- Access consumer libraries: track, photographs, deal with booklet, and calendar
- Examine extra subject matters together with info garage, dossier sharing, networking, and threading
Topics new to iOS eight include:
- Major alterations in app coordinate house and interface rotation
- Trait collections and measurement classes
- View margins, visible influence perspectives, and significant animation changes
- Changes to offered view controllers, popovers and break up view controllers, alert and motion sheet architecture
- Table view automated variable row heights and sliding cells
- Classes for seek effects reveal, net view, visual display unit, and audio blending and effects
- Today extensions, activities extensions, photograph modifying extensions
- Xcode 6 good points: conditional constraints, view debugging, designable perspectives, inspectable homes, new segue types
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Additional info for Programming iOS 8: Dive Deep into Views, View Controllers, and Frameworks
Autolayout is carried out behind the curtain in layoutSubviews; in impact, constraints let you write subtle layoutSubviews performance with no code. Your format process can contain any blend of those. the necessity for handbook structure is uncommon, yet it’s there if you would like it. Autoresizing is used immediately except you intentionally flip it off through environment a superview’s autoresizesSubviews estate to fake, or except a view makes use of autolayout as a substitute. Autolayout is an opt-in know-how, and will be used for no matter what components of your interface you discover applicable; a view that makes use of autolayout can reside facet by way of aspect with a view that makes use of autoresizing. one of many leader locations the place you decide in to autolayout is the nib dossier, and in Xcode five and six all new . storyboard and . xib documents do decide in — they've got autolayout became on, via default. to work out this, opt for the dossier within the undertaking navigator, exhibit the dossier inspector, and look at the “Use car format” checkbox. nevertheless, a view that your code creates and provides to the interface, by way of default, makes use of autoresizing, now not autolayout. Autoresizing Autoresizing is an issue of conceptually assigning a subview “springs and struts. ” A spring can stretch; a strut can’t. Springs and struts may be assigned internally or externally, horizontally or vertically. therefore you could specify (using inner springs and struts) even if and the way the view could be resized, and (using exterior springs and struts) even if and the way the view will be repositioned. for instance: think a subview that's founded in its superview and is to stick situated, yet is to resize itself because the superview is resized. it is going to have struts externally and comes internally. think a subview that's situated in its superview and is to stick founded, and isn't to resize itself because the superview is resized. it should have springs externally and struts internally. think an okay button that's to stick within the decrease correct of its superview. it's going to have struts internally, struts externally to its correct and backside, and comes externally to its most sensible and left. think a textual content box that's to stick on the most sensible of its superview. it really is to widen because the superview widens. it can have struts externally, yet a spring to its backside; internally it is going to have a vertical strut and a horizontal spring. In code, a mixture of springs and struts is determined via a view’s autoresizingMask estate. It’s a bitmask, so that you use bitwise-or to mix concepts. the choices, individuals of the UIViewAutoresizing struct, symbolize springs; no matter what isn’t specific is a strut. The default is . None, it appears which means all struts — yet after all it can’t fairly be all struts, simply because if the superview is resized, anything must swap; in fact, . None is equal to . FlexibleRightMargin including . FlexibleBottomMargin. notice In debugging, in case you log a UIView to the console, its autoresizingMask is pronounced utilizing the notice “autoresize” and a listing of the springs. The margins are LM, RM, TM, and BM; the interior dimensions are W and H.