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Xcode – SwiftUI – I want to display birthdate(only day, month and year) after i get it out of the `Datepicker`

I want to display the date that user chooses using the datepicker but it displays all the information and also i want to calculate the age but i dont really know how, now i solved the problem with displaying Date() but i cant really use the code to calculate age
BuildPreview

    @State var firstName = ""
    @State var lastName = ""
    @State var birthdate = Date()

var dateFormatter: DateFormatter = {
        let dateFormatter = DateFormatter()
        dateFormatter.dateStyle = .medium
        
        return dateFormatter
    }()
    let age = Int()
    init() {
        let age = Calendar.current.dateComponents([.year], from: birthdate, to: Date())
            .year
    }

    var body: some View {
        Form{
            Section(header: Text("Personal data")){
                TextField("Enter first name", text: $firstName)
                TextField("Enter last name", text: $lastName)
                DatePicker("Birthdate", selection: $birthdate,in: ...Date(), displayedComponents:.date)
            }
            Section(header: Text("Final info")){
                HStack{
                    Image(systemName: "person.crop.circle")
                        .resizable()
                        .frame(width: 50, height: 50, alignment: .center)
                    Spacer()
                    VStack{
                        Text("(firstName) (lastName)")
                            .font(.headline)
                        Text("(birthdate)")
                            .font(.subheadline)
                    }
                    Spacer()
                    Image(systemName: "1.square.fill")
                        .resizable()
                        .frame(width: 50, height: 50)
                        .foregroundColor(.blue)
                }
                .padding(.horizontal ,10)
            }
        }
    }
}
Tags:

2

Answers


  1. 0

    A quick and simple approach is to use DateFormatter and luckily SwiftUI Text View supports it:

    The code would look like this:

    // 1. Create a Dateformatter
var dateFormatter: DateFormatter = {
    let dateFormatter = DateFormatter()
    dateFormatter.dateStyle = .long
    
    return dateFormatter
}()
    1. Change : Text("(birthdate)") to Text(birthdate, formatter:dateFormatter)

    You can play with dateFormatter.dateStyle value to get the one you like, check out Set a datestyle in Swift, to read more about how you can play with it

    Login or Signup to reply.
  2. 0

    To calculate somebody’s age from their birthday, you can use code like this:

    let age = Calendar.current.dateComponents([.year], 
                                          from: birthday, 
                                          to: Date())
.year
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