SOLVED: Day 42: Challenge 3, Styling problem for ListLayout

@drezulh

Dec '22

Hello,

I managed to solve challenges for Day 42, however I am not happy with styling when I toggle to ListView. I could not manage to eliminate dark (black) areas around list items. Is there any way to get rid of black areas in the region?

Please see my code for ContentView below;


import SwiftUI

struct GridLayout: View {
    let astronauts: [String: Astronaut]

    let missions: [Mission]

    let columns = [
        GridItem(.adaptive(minimum: 150))
    ]

    var body: some View {

        ScrollView {
            LazyVGrid(columns: columns) {
                ForEach(missions) {mission in
                    NavigationLink {
                        MissionView(mission: mission, astronauts: astronauts)
                    } label: {
                        VStack {
                            Image(mission.image)
                                .resizable()
                                .scaledToFit()
                                .frame(width: 100, height: 100)
                                .padding()

                            VStack {
                                Text(mission.displayName)
                                    .font(.headline)
                                    .foregroundColor(.white)

                                Text(mission.formattedLaunchDate)
                                    .font(.caption)
                                    .foregroundColor(.white.opacity(0.5))
                            }
                            .padding(.vertical)
                            .frame(maxWidth: .infinity)
                            .background(.lightBackground)
                        }
                        .clipShape(RoundedRectangle(cornerRadius: 10))
                        .overlay(
                            RoundedRectangle(cornerRadius: 10)
                                .stroke(.lightBackground)
                        )
                    }
                }
            }
            .padding([.horizontal, .bottom])
        }
    }
}

struct ListLayout: View {
    let astronauts: [String: Astronaut]

    let missions: [Mission]

    var body: some View {
        List {
            LazyVStack {
                ForEach(missions) {mission in
                    NavigationLink {
                        MissionView(mission: mission, astronauts: astronauts)
                    } label: {
                        VStack {
                            Image(mission.image)
                                .resizable()
                                .scaledToFit()
                                .frame(width: 300, height: 100)
                                .padding()

                            VStack {
                                Text(mission.displayName)
                                    .font(.headline)
                                    .foregroundColor(.white)

                                Text(mission.formattedLaunchDate)
                                    .font(.caption)
                                    .foregroundColor(.white.opacity(0.5))
                            }
                            .padding(.vertical)
                            .frame(maxWidth: .infinity)
                            .background(.lightBackground)
                        }
                        .clipShape(RoundedRectangle(cornerRadius: 10))
                        .overlay(
                            RoundedRectangle(cornerRadius: 10)
                                .stroke(.lightBackground)
                        )
                        .padding(.bottom)
                    }
                }
            }
            .background(.darkBackground)
        }
        .listStyle(.plain)
        .listRowBackground(Color.darkBackground)
        .background(.darkBackground)
    }

}

struct ContentView: View {
    @State private var isGrid = false
    let astronauts: [String: Astronaut] = Bundle.main.decode("astronauts.json")

    let missions: [Mission] = Bundle.main.decode("missions.json")

    var body: some View {
        NavigationStack {
            Group {
                if isGrid {
                    GridLayout(astronauts: astronauts, missions: missions)
                } else {
                    ListLayout(astronauts: astronauts, missions: missions)
                }
            }
            .navigationTitle("Moonshot")
            .background(.darkBackground)
            .preferredColorScheme(.dark)
            .toolbar {
                Button(isGrid ? "Grid View" : "List View") {
                    isGrid.toggle()
                }
            }

        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

@Fly0strich

Dec '22

I remember struggling with this as well. But I don't have the time right now to go back through my code to see what exactly I changed to tell you specifically what you need to change. But this is what I ened up with, and was satisfied. Hope it helps.

struct ContentView: View {
    @State private var gridSelected = false

    var body: some View {
        NavigationView {
            Group {
                if gridSelected {
                    MissionGridView()
                } else {
                    MissionListView()
                }
            }
            .navigationTitle("Moonshot")
            .background(.darkBackground)
            .preferredColorScheme(.dark)
            .toolbar {
                Button {
                    gridSelected.toggle()
                } label: {
                    Image(systemName: gridSelected ? "list.dash" : "square.grid.2x2")
                }
            }
        }
        .navigationViewStyle(StackNavigationViewStyle())
    }
}

struct MissionGridView: View {
    let missions: [Mission] = Bundle.main.decode("missions.json")
    let columns = [GridItem(.adaptive(minimum: 150))]

    var body: some View {
        ScrollView {
            LazyVGrid(columns: columns) {
                ForEach(missions) { mission in
                    NavigationLink {
                        MissionView(mission: mission)
                    } label: {
                        VStack {
                            Image(mission.image)
                                .resizable()
                                .scaledToFit()
                                .frame(width: 100, height: 100)
                                .padding()

                            VStack {
                                Text(mission.displayName)
                                    .font(.headline)
                                    .foregroundColor(.white)
                                Text(mission.formattedLaunchDate)
                                    .font(.caption)
                                    .foregroundColor(.white.opacity(0.5))
                            }
                        }
                        .padding(.vertical)
                        .frame(maxWidth: .infinity)
                        .background(.lightBackground)
                        .clipShape(RoundedRectangle(cornerRadius: 10))
                        .overlay(RoundedRectangle(cornerRadius: 10).strokeBorder(.lightBackground))
                    }
                }
            }
            .padding([.horizontal, .bottom])
        }
    }
}

struct MissionListView: View {
    let missions: [Mission] = Bundle.main.decode("missions.json")

    var body: some View {
        ZStack {
            Color.darkBackground
                .edgesIgnoringSafeArea(.all)

            List() {
                ForEach(missions) { mission in
                    NavigationLink {
                        MissionView(mission: mission)
                    } label: {
                        HStack() {
                            Image(mission.image)
                                .resizable()
                                .scaledToFit()
                                .frame(width: 100, height: 100)
                                .padding()

                            Spacer()

                            VStack {
                                Text(mission.displayName)
                                    .font(.headline)
                                    .foregroundColor(.white)

                                Text(mission.formattedLaunchDate)
                                    .font(.caption)
                                    .foregroundColor(.white.opacity(0.5))
                            }
                        }
                    }
                }
                .listRowInsets(EdgeInsets())
                .listRowBackground(Color.lightBackground)
                .listRowSeparator(.hidden)
                .overlay(Rectangle().stroke(Color.darkBackground, lineWidth: 4))
            }
            .listStyle(.plain)
        }
    }
}

@drezulh

Dec '22

Thank you!

I have updated my ListLayout struct.


struct ListLayout: View {
    let astronauts: [String: Astronaut]

    let missions: [Mission]

    var body: some View {

        List {
            ForEach(missions) { mission in
                NavigationLink {
                    MissionView(mission: mission, astronauts: astronauts)
                } label: {
                    LazyVStack {
                        VStack {
                            Image(mission.image)
                                .resizable()
                                .scaledToFit()
                                .frame(width: 300, height: 100)
                                .padding()

                            VStack {
                                Text(mission.displayName)
                                    .font(.headline)
                                    .foregroundColor(.white)

                                Text(mission.formattedLaunchDate)
                                    .font(.caption)
                                    .foregroundColor(.white.opacity(0.5))
                            }
                            .padding(.vertical)
                            .frame(maxWidth: .infinity)
                            .background(.lightBackground)
                        }
                        .clipShape(RoundedRectangle(cornerRadius: 10))
                        .overlay(
                            RoundedRectangle(cornerRadius: 10)
                                .stroke(.lightBackground)
                        )
                        .padding(.bottom)
                    }
                }
                .listRowInsets(EdgeInsets())
                .listRowBackground(Color.darkBackground)
                .listRowSeparator(.hidden)
                .padding(.horizontal)
            }
        }
        .listStyle(.plain)
    }

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