Lambda School iOS Labs Project

Lambda School Labs

Main User Interface

Programmatically Using Fixed Constraints

let constraint = NSLayoutConstraint(item: view1,
attribute: .width,
relatedBy: .equal,
toItem: nil,
attribute: .notAnAttribute,
multiplier: 1.0,
constant: 150.0)

Adding Constraints To a View

let constraint = NSLayoutConstraint(item: view1,
attribute: .leading,
relatedBy: .equal,
toItem: view2,
attribute: .trailing,
multiplier: 1.0,
constant: 10.0)

let constraint = view1.leadingAnchor.constraint(equalTo: view2.trailingAnchor, constant: 10)
let constraint = view1.widthAnchor.constraint(equalToConstant: 150)

Facts about programmatic layout:

  • Code is a single source of truth of a UI component.
  • View setup is explicit. It is clear which properties are configured and how.
  • Merge conflicts are easier to resolve since we are dealing with code rather than XML.
  • Extensible for complex scenarios: screen rotation, animations, dynamic fonts, etc.
  • The consistent coding style of constructing UI programmatically is maintained across a mixed UIKit and SwiftUI project. With the gradual adoption of SwiftUI, this becomes more and more relevant.
  • Less noise in the codebase: no segues, string identifiers, tricky initialization from storyboard and xib, numerous helper extensions attempting to hide some part of that noise.

Story Squad (Scribble-Stadium) RC-1 Release

  • Integration of IOT and Cloud
  • AI integration




Love podcasts or audiobooks? Learn on the go with our new app.

Recommended from Medium

Writing Synchronous Code in Swift

How to Build an iOS App for Livestream Events

How to add amazing frame-by-frame animations in SwiftUI

‘TDCRoundButton’ Custom Rounded Gradient UIButton CocoapodIn Xcode 12 (Swift 5)

HMAC authentication in Swift and Java (iOS/Android)

Still struggling with the Apple UIWebView deprecation?

Customize UISearchBar for different iOS versions

How To Stop Auto Download in Whatsapp or WhatsApp pr Auto Downloading kaise Stop or Band Krain…

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Pravin Patel

Pravin Patel

More from Medium

How to Assign Static IP Address in Raspberry PI

The Virtual Transition: Using Face-to-Face Best Practices to Grow Online Communities

How to Make A Social Media App and How Much Does it Cost?