Why isn't my "Add button" not working?

Question

makabaka1880 OP

Created Jun ’22

Replies 1

Boosts 0

Participants 2

I'm trying out Swift Charts and I'm pretty messed up

After I deleted all of my items, I couldn't add items anymore

import SwiftUI

extension Array where Element == ChartsData {
    mutating func delete(_ item: ChartsData) {
        self.removeAll {
            $0 == item
        }
    }
}

struct ContentView: View {
    var ofType: ChartsType
    @State var data: [ChartsData] = []
    var body: some View {
        List {
            VStack {
                HStack {
                    Spacer()

                    // MARK - add button
                    Button {
                        data.append(ChartsData(item: "item"))
                    } label: {
                        Image(systemName: "plus").imageScale(.large)
                    }.buttonStyle(.plain).padding()
                }
                

                List {
                    ForEach(data) { datum in
                        TableRow(data: datum).swipeActions {
                            Button(role: .destructive) {
                                data.delete(datum)
                            } label: {
                                Label("Delete", systemImage: "trash")
                            }
                        }
                    }
                }

                NavigationLink{
                    ChartsView(ofType: .BarChart, data: data)
                } label: {
                    Text("Generate").font(.largeTitle).foregroundStyle(.linearGradient(colors: [.orange, .yellow, .blue, .purple], startPoint: .topTrailing, endPoint: .bottomLeading))
                }.padding()
            }
        }
    }
}


struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView(ofType: .BarChart, data: [
            ChartsData(item: "testItem1", value: 10),
            ChartsData(item: "testItem2", value: 20)
        ])
    }
}

Answered by zunda in 717400022

List in List does not work well.

You should change code like below code

List {
 Button("ADD") {
 }
 Section {
    ForEach(data) { datum in
    }
  }
}

Boost

Answer 1

zunda OP

Jun ’22

Accepted Answer

List in List does not work well.

You should change code like below code

List {
 Button("ADD") {
 }
 Section {
    ForEach(data) { datum in
    }
  }
}

0