SwiftUI Fundamentals

Feb 28 2023 · Swift 5.7, macOS Venture 13.1, Xcode 14.2

Part 1: SwiftUI Views

07. Layout with Stacks

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Previous episode: 06. Challenge: State & Binding Next episode: 08. Repeat Views with ForEach & Lists

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One of the most powerful SwiftUI components is the Stack.

VStack(alignment: .leading, spacing: 20.0) {

HStack {
      
}

Button { print("Play!") }
  label: { 
  
  }

Label("Play", systemImage: "play.fill")

Spacer()
Label(...)
Spacer()

HStack {
...
}
.padding(.vertical)
.background(Color.gray.opacity(0.15))
.cornerRadius(12)

struct ButtonLabel: View {
  let title: String
  let systemImage: String
  
  var body: some View {
    ...
    Label(title, systemImage: systemImage)

label: { ButtonLabel(title: "Play", systemImage: "play.fill") }

Button { print("Shuffle!") }
  label: { ButtonLabel(title: "Shuffle", systemImage: "shuffle") }

ZStacks

The third kind of Stack is called a ZStack. It stacks views depth-wise, like this big orange square with the text and play symbol in it.

struct Thumbnail: View {
  var body: some View {

Thumbnail()
  .padding()
  .previewLayout(.fixed(width: 250, height: 250))

ZStack(alignment: Alignment(horizontal: .center, vertical: .center)) {

}

Alignment(horizontal: .leading, vertical: .top)

RoundedRectangle(cornerRadius: 12)
  .foregroundColor(.orange)
  .aspectRatio(1, contentMode: .fit)
  .shadow(radius: 10)

Image(systemName: "play.fill")
  .resizable()
  .frame(width: 50, height: 50)
  .foregroundColor(.white)
  .opacity(0.4)

VStack(alignment: .leading) {
  Text("Meow!")
    .font(.largeTitle)
    .fontWeight(.black)
  Text("Mix")
    .font(.largeTitle)
  
  Spacer()
}
.foregroundColor(.white)
.padding()

Put it together!

Now you just need to put it all together.

HStack(alignment: .bottom, spacing: 20) {
  Thumbnail()

}
.padding()
.frame(minHeight: 150, maxHeight: 250)