Never mind this post, the instructor addressed the issue. You need to put the picker in a NavigationView.

I'm on day 17 of 100 days with SwiftUI creating pickers in a form. I coded it just like the instructor but I got the menu picker instead of the navigationlink. The menu picker is blue while the default picker is grey. I tried adjusting the pickerstyle to .navigationLink but its not adjustable. It stays fixed on 4 people. Here is my code, tell me what I am doing wrong.

I wish I could figure out how to add photos to thread. Text only sucks.

import SwiftUI

struct ContentView: View
{
    @State private var checkAmount = 0.0
    @State private var numberOfPeople = 2
    @State private var tipPercentage = 20

    let tipPercentages = [10, 15, 20, 25, 0]
    var body: some View
    {
        Form
        {
            Section
            {
                TextField("Amount", value: $checkAmount, format: .currency(code: Locale.current.currency?.identifier ?? "USD"))
                    .keyboardType(.decimalPad)

                Picker("Number of people", selection: $numberOfPeople)
                {
                    ForEach(2..<100)
                    {
                        Text("\($0) people")
                    }
                }
                .pickerStyle(.navigationLink)
            }

            Section
            {
                Text(checkAmount, format: .currency(code: Locale.current.currency?.identifier ?? "USD"))
            }
        }
    }
}

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

I think you need NavigationView before the Form. Or wrap the Form in NavigationView{Form {} }. Alternatively try the .menu or .wheel. Plenty options to suit your taste.

If you press the insert image you should be able to upload an image.

@morpheus addresses a visual issue:

I wish I could figure out how to add photos to thread. Text only sucks.

See -> How to add graphics to your post

or See -> Another Handy Guide