I am currently developing an app where user needs to input fuel price in 0,00 format where after first digit shows comma and it is limited only to input 3 digits. Does anybody have solution?
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Add the following objc function inside your UIViewController class:
@objc func format_textfield(_ sender:UITextField){
var str:String = sender.text!
if str.count>0 && Array(str)[0] == ","{
sender.text = String(str.suffix(from: str.index(str.startIndex,offsetBy: 1)))
str = sender.text!
}
if str.count > 4 {
sender.text = String(str.prefix(4))
}else if str.count > 1 && Array(str)[1] != ","{
sender.text = String(str[..<str.index(str.startIndex, offsetBy: 1)])+","+String(str[str.index(str.startIndex, offsetBy: 1)...])
}
}
Then, add the function as a target for your UITextField like this (this can be done in the viewDidLoad() method):
textField.addTarget(self, action: #selector(format_textfield(_:)), for: .editingChanged)
FelipeCruzV10
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Great! Nice solution but just one thing , when I want to delete I can not delete all charachters , example I texted 1,99 but when I delete it with numberic pad keyboard it stays by 1, could you please check it why? – Petar Ivic Jun 01 '21 at 22:17
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Give me some minutes and I'll edit my answer with a better solution :) – FelipeCruzV10 Jun 01 '21 at 22:18
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Ok , nice to hear that :) – Petar Ivic Jun 01 '21 at 22:50
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Done! It can still be improved but I think it works well enough. Maybe you can make the improvements. Things to improve: when you delete the first number, the text cursor is moved to the right. – FelipeCruzV10 Jun 01 '21 at 22:53
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Works like a charm I appreciate it :) – Petar Ivic Jun 01 '21 at 23:04
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Also, allow the user to only add numbers. Because, at this moment, the user is able to add letters and symbols. You can set the keyboard type to numeric only. – FelipeCruzV10 Jun 01 '21 at 23:26
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Yes, that is what I did – Petar Ivic Jun 01 '21 at 23:35