Checking if textfields are empty Swift

Question

I know there are tons of stack overflow pages out there that explain how to do this but everytime I take the code from here and put it in i get the same error and that error is value of "string?" has no member "text" Any ideas of a solid way that will work for checking if a textfield is empty in swift?

let userEmail = userEmailTextField.text;
// Check for empty fields
if (userEmail.text.isEmpty) {
    // Display alert message
    return;
}

The error points to incorrect use of the text property. Please show your code, otherwise it's hard to guess what's going on. — Sergey Kalinichenko
– Sergey Kalinichenko, Commented Jul 2, 2016 at 17:12
Your userEmail variable already contains the text of the userEmailTextField. No need to do another userEmail.text, just do userEmail.isEmpty — James
– James, Commented Jul 2, 2016 at 21:23
in Android you have a method 'editTextView.isBlankOrEmpty()'. When it comes to iOS ?! — Dan Alboteanu
– Dan Alboteanu, Commented Apr 30, 2020 at 5:16

Community · Accepted Answer · 2017-05-23 12:18:10Z

37

This post is given a good answer (it's a pity it has no "accepted" mark). Use (self.field.text?.isEmpty ?? true).

Assume your textField is declared as:

    @IBOutlet weak var textField: UITextField!

You can check its emptiness with:

    if textField.text?.isEmpty ?? true {
        print("textField is empty")
    } else {
        print("textField has some text")
    }

To use the variables in your edited post:

    let userEmail = userEmailTextField.text;
    // Check for empty fields
    if userEmail?.isEmpty ?? true {
        // Display alert message
        return;
    }

or:

    // Check for empty fields
    if userEmailTextField.text?.isEmpty ?? true {
        // Display alert message
        return;
    }

edited May 23, 2017 at 12:18

CommunityBot

11 silver badge

answered Jul 2, 2016 at 17:23

OOPer

48k6 gold badges116 silver badges144 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

404Developer Over a year ago

I put that exact code in and i still get the same error when i change "textfield" to "userEmail"

OOPer Over a year ago

It seems you edited your post while I am writing. And userEmail in your edited post is a little bit misleading. I'll add some codes adapting your edited code.

Luca Angeletti · Accepted Answer · 2016-07-02 17:18:11Z

5

The text property is an optional. So it can contains a String or nil.

If you want to treat nil as an empty String then just write

let isEmpty = (textField.text ?? "").isEmpty

answered Jul 2, 2016 at 17:18

Luca Angeletti

59.6k13 gold badges127 silver badges153 bronze badges

4 Comments

404Developer Over a year ago

I dont really understand what you mean by that, i just want userEmail to equal userEmailTextField

404Developer Over a year ago

Im not sure what nil is and or how to use it

404Developer Over a year ago

Why would i need to do anything to isEmpty anyways its a built in

Zonker.in.Geneva Over a year ago

@BestThereEverWas you need to understand some of the basic elements of Swift in order to understand the answers you get/got. Optionals is a fundamental aspect of Swift, and failure to understand them leads to the kinds of questions like you asked and the answers like you got. If you don't know what "nil" is, then you need to learn about it. Every Swift primer discusses them at length....

Shobhit C · Accepted Answer · 2019-08-25 15:04:57Z

3

Alternatively you can also use:

Swift 3:

if (textField.text.characters.count > 0) {
   print("text field not empty")
} else {
   print("text field empty")
}

Swift 4.x and above:

if (textField.text.count > 0) {
       print("text field not empty")
    } else {
       print("text field empty")
    }

edited Aug 25, 2019 at 15:04

answered Jul 2, 2016 at 18:56

Shobhit C

84710 silver badges15 bronze badges

3 Comments

Nrc Over a year ago

I like this solution. I think in Swift 5 it is if (nameField.text!.count > 0)

Shobhit C Over a year ago

Yes, @Nrc that's true. I'll update my answer. Thanks.

Nrc Over a year ago

Be aware that your solution do not cover empty spaces. I mean the textField could "look" empty, with no letters, but if the user writes an space (perhaps by accident) it will register as not empty

coders · Accepted Answer · 2019-03-28 23:31:11Z

1

Give you an example picture and cover code.

@IBAction func save(_ sender: Any) {
    print("Saving...")
    //CHECK MANDATORY FIELDS
    checkMandatoryFields()
}

private func checkMandatoryFields(){

    //CHECK EMPTY FIELDS
    if let type = typeOutle.text, let name = nameOutlet.text, let address = addressOutlet.text, type.isEmpty || name.isEmpty || address.isEmpty {
        print("Mandatory fields are: ")
        errorDisplay(error: "Mandatory fields are: Type, Name, Address.")
        return
    }

    //CHECK SPACE ONLY FIELDS
}

answered Mar 28, 2019 at 23:31

coders

2,5071 gold badge16 silver badges20 bronze badges

Comments

Deep Kakkar · Accepted Answer · 2017-04-04 06:10:18Z

0

Here's the correct answer for this.

textField.text = ""
if (textField.text.isEmpty) {
    print("Ooops, it's empty")
}

edited Apr 4, 2017 at 6:10

Deep Kakkar

6,3054 gold badges43 silver badges80 bronze badges

answered Mar 15, 2017 at 9:10

user7615773

Comments

iosdvlpr · Accepted Answer · 2019-03-08 00:17:21Z

0

It was this check that helped me since it was necessary for me to send a request to the API, and it was necessary to send nill instead of "" if the textField is without text.

textField.text!.count > 0  ? textField.text : nil

Alternatively, you can check this way (but this option did not fit me):

if textField.text != nil {

} else {

}

answered Mar 8, 2019 at 0:17

iosdvlpr

59510 silver badges11 bronze badges

Collectives™ on Stack Overflow

Checking if textfields are empty Swift

6 Answers 6

2 Comments

4 Comments

3 Comments

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

6 Answers 6

2 Comments

4 Comments

3 Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related