Kristaps Grinbergs iOS, tvOS, watchOS, macOS in Swift

UIView vs CALayer

Here’s something useful to know - UIView’s are backed by CALayer’s. Layers offer a lower-level interface to the visual content. When we need more flexibility or performance, we can go to layer level.

03 May 2019

What is (Core) Animation

Animation has been an important part of the Mac OS X user interface since the very beginning. You’ve probably seen the Genie effect, which occurs when you minimize an application, so many times that you hardly notice it anymore.

Apple integrates animation into its operating systems and applications, and it is becoming so commonplace that users are starting to expect it.

Core Animation is a group of features that makes it easy to build animated user interfaces for the Apple ecosystem devices like iPhone, iPad, Apple TV, and Mac.

27 Mar 2019

Animating shapes in iOS

Animating a UIBezierPath drawing is a pretty trivial task. But how to animate shape morphing, i.e. make one shape change into another? (For instance, morphing a triangle into a square.) To accomplish this, we need to use CAShapeLayer and animate its properties using Core Animation capabilities.

12 Feb 2019

Websockets in iOS using Swift

WebSockets allow for extremely fast two-way networking communication, which lets you send and receive updates quicker and more often, not to mention securely. WebSocket is a communication protocol that uses sockets, providing duplex communication over a single TCP connection. It was standardized by the IETF in 2011 and is a different protocol from HTTP.

WebSockets are widely used in chat apps, streaming real-time notifications, and stock prices.

05 Jan 2019