Checking if text field is empty

Question

I am attempting to check if a text field is empty but am getting an error of "Type (Bool, Bool, Bool) does not conform protocol 'Boolean Type' "

 if(userEmail == "", userPassword == "", userRepeatPassword == "") {


        alertMessage("All fields are required")
        return

    }

I am using xcode 7

Manikandan D · Accepted Answer · 2015-10-03 15:40:54Z

4

Try this,

if(userEmail == "" || userPassword == "" || userRepeatPassword == "") 
{
                //Do Something
}

(or)

if(userEmail == "" && userPassword == "" && userRepeatPassword == "") 
{
                //Do Something
}

answered Oct 3, 2015 at 15:40

Manikandan D

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2 Comments

Ace Over a year ago

I get a Thread1: Breakpoint 1.1 on the ' if(userEmail == "" || userPassword == "" || userRepeatPassword == "") { //Do Something }' what can I do to fix that?

Manikandan D Over a year ago

Use this 'if(userEmail.text == "" || userPassword.text == "" || userRepeatPassword.text == "") { //Do Something }' (or) if you develop swift 2.0 then use this 'if(userEmail.text! == "" || userPassword.text! == "" || userRepeatPassword.text! == "") { //Do Something }'

William Kinaan · Accepted Answer · 2015-10-03 15:41:40Z

0

Your should have used && as this:

let userEmail = "William"
let userPassword = "Totti"
let  userRepeatPassword = "Italy"


if(userEmail == "" && userPassword == "" &&  userRepeatPassword == "") {

    print("okay")

}

However, there is another way to do it and it is:

if(userEmail.isEmpty && userPassword.isEmpty && userRepeatPassword.isEmpty){
    print("okay")
}

Also another way is to check the number of characters like this:

if(userEmail.characters.count == 0 && userPassword.characters.count == 0 && userRepeatPassword.characters.count == 0){
    print("okay")
}

answered Oct 3, 2015 at 15:41

William Kinaan

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Comments

Robin Alsalehy · Accepted Answer · 2015-11-16 16:44:39Z

0

 if (userEmail?.isEmpty || userConfirmEmail?.isEmpty || userPassword?.isEmpty || userConfirmPassword?.isEmpty){

        alertMessage("All fields are required!");
        return;
    }

Use this method

answered Nov 16, 2015 at 16:44

Robin Alsalehy

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1 Comment

Andrew Smith Over a year ago

Not a method on UITextField

Pragnesh Vitthani · Accepted Answer · 2016-12-08 09:55:14Z

0

This is the simplest way to check if a textfield is empty or not:

For Example:

if let userEmail = UserEmail.text, !userEmail.isEmpty,
let userPassword = UserPassword.text, !userPassword.isEmpty,
let userRepeatPassword = UserRepeatPassword.text, !userRepeatPassword.isEmpty { ... }

If all conditions are true then all variables are unwrapped.

answered Dec 8, 2016 at 9:55

Pragnesh Vitthani

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Comments

Sabby · Accepted Answer · 2017-11-07 04:56:54Z

0

After Swift 3.0, better to use the early binding statements, to make the code more clear.

guard !(userEmail.isEmpty)! && !(userPassword.isEmpty)! && !(userRepeatPassword.isEmpty)! else {
      return
}

// Do something if the fields contain text

answered Nov 7, 2017 at 4:56

Sabby

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