For Project 1, Challenge 2, I added a fourth section to display the original check amount plus tip value, without dividing by the number of people as requested. That works fine.

I then went ahead and added a header to the new section with header text "Total amount for the check".

The app builds fine but when I click in the amount field in the Simulator which brings up the keyboard there are now two "Done" buttons on the keyboard (the button was added to remove focus from the amount field). When I remove the header the issue goes away and there is only one "Done" button again on the keyboard.

I'm struggling to understand why the addition of the header is causing that issue.

Any thoughts?

Can you post your code?

Sorry meant to do that but forgot. Here it is...

import SwiftUI

struct ContentView: View {
    @State private var checkAmount = 0.0
    @State private var numberOfPeople = 0
    @State private var tipPercentage = 20
    @FocusState private var amountIsFocused: Bool
    let tipPercentages = [10, 15, 20, 25, 0]
    var totalPerPerson: Double {
        let peopleCount = Double(numberOfPeople + 2)
        let tipSelection = Double(tipPercentage)
        let tipValue = checkAmount / 100 * tipSelection
        let grandTotal = checkAmount + tipValue
        let amountPerPerson = grandTotal / peopleCount
        return amountPerPerson
    }
    var checkGrandTotal: Double {
        let tipSelection = Double(tipPercentage)
        let tipValue = checkAmount / 100 * tipSelection
        let grandTotal = checkAmount + tipValue
        return grandTotal
    }
    var localCurrency: FloatingPointFormatStyle<Double>.Currency {
        let currencyCode = Locale.current.currencyCode ?? "USD"
        return FloatingPointFormatStyle<Double>.Currency(code: currencyCode)
    }

    var body: some View {
        NavigationView {
            Form {

                Section {
                    TextField("Amount", value: $checkAmount, format: localCurrency)
                        .keyboardType(.decimalPad)
                        .focused($amountIsFocused)
                    Picker("Number of people", selection: $numberOfPeople) {
                        ForEach(2 ..< 100) {
                            Text("\($0) people")
                        }
                    }
                }

                Section {
                    Picker("Tip percentage", selection: $tipPercentage) {
                        ForEach(0..<101) {
                            Text("\($0) percent")
                        }
                    }

                /*Section {
                    Picker("Tip percentage", selection: $tipPercentage) {
                        ForEach(tipPercentages, id: \.self) {
                            Text($0, format: .percent)
                        }
                    }
                    .pickerStyle(.segmented)*/
                } header: {
                    Text("How much tip do you want to leave?")
                }

                Section {
                    Text(totalPerPerson, format: localCurrency)
                } header: {
                    Text("Amount per person")
                }

                Section {
                    Text(checkGrandTotal, format: .currency(code: Locale.current.currencyCode ?? "USD"))
                } header: {
                    Text("Total amount for the check")
                }

                .navigationTitle("WeSplit")
                .toolbar {
                    ToolbarItemGroup(placement: .keyboard) {
                        Spacer()

                        Button("Done") {
                            amountIsFocused = false
                        }
                    }
                }
            }
        }
    }
}

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

Move the navigationTitle and the toolbar on the Form and not on the last section.

import SwiftUI

struct ContentView: View {
    @State private var checkAmount = 0.0
    @State private var numberOfPeople = 0
    @State private var tipPercentage = 20
    @FocusState private var amountIsFocused: Bool
    let tipPercentages = [10, 15, 20, 25, 0]
    var totalPerPerson: Double {
        let peopleCount = Double(numberOfPeople + 2)
        let tipSelection = Double(tipPercentage)
        let tipValue = checkAmount / 100 * tipSelection
        let grandTotal = checkAmount + tipValue
        let amountPerPerson = grandTotal / peopleCount
        return amountPerPerson
    }
    var checkGrandTotal: Double {
        let tipSelection = Double(tipPercentage)
        let tipValue = checkAmount / 100 * tipSelection
        let grandTotal = checkAmount + tipValue
        return grandTotal
    }
    var localCurrency: FloatingPointFormatStyle<Double>.Currency {
        let currencyCode = Locale.current.currencyCode ?? "USD"
        return FloatingPointFormatStyle<Double>.Currency(code: currencyCode)
    }

    var body: some View {
        NavigationView {
            Form {

                Section {
                    TextField("Amount", value: $checkAmount, format: localCurrency)
                        .keyboardType(.decimalPad)
                        .focused($amountIsFocused)
                    Picker("Number of people", selection: $numberOfPeople) {
                        ForEach(2 ..< 100) {
                            Text("\($0) people")
                        }
                    }
                }

                Section {
                    Picker("Tip percentage", selection: $tipPercentage) {
                        ForEach(0..<101) {
                            Text("\($0) percent")
                        }
                    }
                } header: {
                    Text("How much tip do you want to leave?")
                }

                Section {
                    Text(totalPerPerson, format: localCurrency)
                } header: {
                    Text("Amount per person")
                }

                Section {
                    Text(checkGrandTotal, format: .currency(code: Locale.current.currencyCode ?? "USD"))
                } header: {
                    Text("Total amount for the check")
                }
            }
            .navigationTitle("WeSplit")
            .toolbar {
                ToolbarItemGroup(placement: .keyboard) {
                    Spacer()

                    Button("Done") {
                        amountIsFocused = false
                    }
                }
            }
        }
    }
}

Thanks!

One issue I had was being able to track the brace pairs to be sure I had things correctly formated.

Since the code covered move than one screen length I could not see, for example, the corresponding open brace if I clicked before a closed brace at the bottom of the code. Any Xcode trick to see how braces match for long lines of code?

Sorry, my bad in last reply..."if I clicked AFTER a closed brace at the bottom of the code."

You're welcome.

If you double-click on a brace it will jump to it's corresponding match, selecting everything in between as well.