I'm using a decimalpad keyboard and when I use the comma the app doesn't recognise it I want that in every country the decimals are written with the comma ( , ) Don't you think it is better for users that they get localized, familiar keypad shown?
Unless you are creating sort of a programming tool, decimal separator should be localized, I think.
You need to do 3 things consistent, when you work with numeric values in UI. Show properly localized keypad (iOS will manage it, and I do not know how to override the behavior of iOS)
Read the numeric values using NumberFormatter properly localized
Show the numeric values using NumberFormatter properly localized
struct BMIView: View {
		let numberFormatter: NumberFormatter = {
				let nf = NumberFormatter()
				nf.locale = Locale.current
				//Set up the NumberFormatter as you like...
				nf.numberStyle = .decimal
				nf.maximumFractionDigits = 1
				return nf
		}()
		
		@State private var height = ""
		@State private var weight = ""
		@Environment(\.presentationMode) var presentationMode
		var inputAfterConvertions: Float {
				//Use NumberFormatter to read numeric values
				let hh = numberFormatter.number(from: height)?.floatValue ?? 0 //<-
				let ww	= numberFormatter.number(from: weight)?.floatValue ?? 0 //<-
				 var ris: Float = 0
				 if hh > 0 && ww > 0{
				 ris = (ww / (hh * hh)) * 1000
						return ris
				}
					 return 0
		}
		//...
		var body: some View {
				NavigationView{
						Form{
								Section(header: Text("Enter your height in cm")){
										TextField("Input",text: $height)
												.keyboardType(.decimalPad)
								}
								Section(header: Text("Enter your Weight in kg")){
										TextField("Input",text: $weight)
												.keyboardType(.decimalPad)
								}
								Section(header: Text("Check result")){
										//Use NumberFormatter to show numeric values
										Text("\(inputAfterConvertions as NSNumber, formatter: numberFormatter)") //<-
								}
						}
		//...
}
Seems you are trying something called DecimalTextField (regarding issue #2), but you should better always have in mind localization issues unless you write U.S. only apps.
How do I dismiss the keyboard? Sorry, but I do not know the right solution in pure SwiftUI. Maybe something like UIViewRepresentable (as found in DecimalTextField) would be needed.
One more.
If you already have a similar thread and it is unsolved, you should better consider continuing on the old thread. It is not good for the forums to have many threads unsolved.
