This README contains the answers to Module 6's homework questions.

In SwiftUI, you describe your interfaces declaratively and leave the drawing and updating of views to the Framework.

The question is somewhat ambiguous as both .transition(_:) and .onAppear modifiers are required.

The .transition(_:) modifier specifies the transition to be applied when a View appears or disappears, allowing for animating it in and out.

However, the .onAppear modifier is where you would trigger state changes that cause a View to animate. The associated state changes would need to be inside of a withAnimation block to animate.

For example:

struct AnimateInView: View {
    @State private var showingView: Bool = false

    var body: some View {
        VStack {
            if showingView {
                Text("I have arrived")
                    .transition(.slide)
            }
        }
        .onAppear {
            withAnimation {
                showingView = true
            }
        }
    }
}

There are multiple native Swift types that implement the Hashable protocol: https://developer.apple.com/documentation/swift/hashable#conforming-types.

Two frequently used native types that implement Hashable are:

1. String
2. Int

Duration

.id(_:) modifier

Identifiable

GridItem.Size.fixed(_:) lets you specify an exact size for a column or row.

Considering this question might be a little ambiguous in the context of the latest SwiftUI framework, I am going to assume the question was written before iOS 16 and the actual introduction of the Grid view.

See also my answer to question j below.

A ScrollViewReader's ScrollViewProxy

True

GridItem array

I'm presuming this question, like previous module questions (and answer g of this module), refers to Grid as a generic term for LazyVGrid and LazyHGrid prior to iOS 16.

iOS 16 introduced a new Grid view which is laid out quite differently.

For LazyVGrid and LazyHGrid, the GridItem array is the key determinant in defining how items should be sized and aligned.

For an iOS 16+ Grid view, the determinants of how items are sized and aligned include:

• The contents of each GridRow
• The alignment and spacing parameters specified when the Grid is instantiated
• Any applied view modifiers.

Wrap any changes you want to animate in a call to withAnimation.

The native SwiftUI grid view builds on the VStack and HStack views.

scrollTo(_:anchor:)

However, it should be noted that scrollTo(_:anchor:) is a method on the ScrollViewReader's ScrollViewProxy (not a direct method on ScrollViewReader itself)

See Xcode project.

See Xcode project.