TextField formatting the amount with 2 decimal point

Question

I have the following requirement

Textfield should restrict the decimal point to 2 values. if the user input the numbers with out any "." then the text field should format the values to like this

e.g. TYPING THIS -> LEADS TO THIS AMOUNT

27 -> 0.27

2765 -> 27.65

Also if the user input "." in the text field then it should format like this

0.27 ->0.27

27.65 ->27.65

27.6 ->27.60

Thanks

Got the requirement, but what have you tried? SO is not a place to get code by posting your requirement :) Please post what have you tried and whats the issue you are facing — Sandeep Bhandari, Feb 17 '21 at 10:39
So if the user wants to enter 123 they have to either write 12300 or 123.0? — Joakim Danielson, Feb 17 '21 at 21:10

Tomas Jablonskis · Answer 1 · 2021-02-17T11:05:04.043

Here, I did the hard work for you. This is not exactly what you asked for, but it's a good starting point. Next time provide details of what is your problem and how you tried to solve it yourself (what did not work, what worked, etc.) and not just ask for the solution...

let inputs = ["2356", "232", "23.32", "00000.20"]

func removeDotsAndLeadingZeros(_ string: String) -> String {
    return string
        .replacingOccurrences(of: ".", with: "")
        .replacingOccurrences(of: "^0*", with: "", options: .regularExpression)
}

func format(_ number: Double) -> String {
    return String(format: "%.2f", number)
}

let noDots = inputs.map(removeDotsAndLeadingZeros)
let doubles = noDots.map { Double($0)! / 100 }
let formatted = doubles.map(format)

// prints ["23.56", "2.32", "23.32", "0.20"]
print(formatted)

TextField formatting the amount with 2 decimal point

1 Answers1