Your First iOS & SwiftUI App: An App from Scratch

Feb 13 2023 · Swift 5.7, iOS 16, Xcode 14

Part 1: Getting Started with SwiftUI

06. SwiftUI View Modifiers

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Notes: 06. SwiftUI View Modifiers

Apple’s Human Interface Guidelines

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Alright! At this point, we’ve created the bones of our user interface.

Text("100")
   .opacity(0.5)
Text("100")
  .opacity(0.5)
  .border(Color.red, width: 2)
Text("100")
    .border(Color.red, width: 2)
    .opacity(0.5)
.bold()
.bold()
.multilineTextAlignment(.leading)
.multilineTextAlignment(.center)
.bold()
.multilineTextAlignment(.center)
.linespacing(4.0)
.font(.title)

Dynamic Type

Now you’ll notice here that rather than setting this to a hard-coded font size, like 12, 14, et cetera it’s asked us to choose a preset font size such as title.

.font(.footnote)

Preview Dynamic Type Variants

One of the nice things about SwiftUI is you can actually get a preview of what your app would look like if the user selects a different size for the dynamic type size.

Letter Spacing

OK, it’s looking pretty close to Luke’s design at this point, but there’s something that doesn’t look quite right, and it’s pretty subtle. Can you notice what it is?

.kerning(2.0)