Fetching and setting date from datepicker, but still getting old default value

Question

I want to fetch and set date from DatePicker, but my date is not updating. SwiftUI is new to me and I am confused with what type of property wrapper to use. Ple

Answer 1

You can calculate the current date - 15 days using this:

let previousDate = Calendar.current.date(byAdding: .day, value: -15, to: Date())!

Then use the previousDate in DatePicker`s range:

DatePicker(selection: $selectedDate, in: previousDate...Date(), displayedComponents: .date) { ...

Summing up, your code can look like this:

struct DatePickerView: View {
    @Environment(\.presentationMode) var presentationMode
    @ObservedObject var viewModel: MyViewModel

    var dateFormatter: DateFormatter {
        let formatter = DateFormatter()
        formatter.dateStyle = .long
        return formatter
    }

    @State private var selectedDate = Date()
    let previousDate = Calendar.current.date(byAdding: .day, value: -15, to: Date())!

    var body: some View {
        VStack {
            //Title
            HStack{
            Text("SELECT A DATE")
                .foregroundColor(.white)
                .font(.system(size: 20))
            }
                .frame(width:UIScreen.main.bounds.width,height: 60)
            .background(Color.red)

            //Date Picker
            DatePicker(selection: $selectedDate, in: previousDate...Date(), displayedComponents: .date) {
                Text("")
            }.padding(30)

            Text("Date is \(selectedDate, formatter: dateFormatter)")
            Spacer()

            //Bottom buttons
            Button(action: {
                self.viewModel.selectedDate = self.selectedDate
                self.presentationMode.wrappedValue.dismiss()
            }) {
                Text("DONE")
                .fontWeight(.semibold)
            }
        }
    }
}

Tested in Xcode 11.5, Swift 5.2.4.