How to check if a text field is empty or not in swift

Question

I am working on the code below to check the textField1 and textField2 text fields whether there is any input in them or not    The IF statement is not doing anything when I press the button     IBOutlet var textField1   UITextField   UITextField     IBOutlet var textField2   UITextField   UITextField     IBAction func Button sender   AnyObject            if textField1          textField2                     then do something

User · Answer

A compact little gem for Swift 2   Xcode 7   IBAction func SubmitAgeButton sender  AnyObject         let newAge   String inputField text            if   textField text  isEmpty     false            label text    Enter a number             else           label text    Oh  you re   newAge            return

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Maybe i m a little too late  but can t we check like this       IBAction func Button sender  AnyObject           if textField1 text utf16Count    0    textField2 text utf16Count    0

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It s too late and its working fine in Xcode 7 3 1  if  txtfield1 text  isEmpty     txtfield2 text  isEmpty             is empty

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I just tried to show you the solution in a simple code   IBAction func Button sender   AnyObject     if textField1 text               either textfield 1 is not empty then do this task   else       show error here that textfield1 is empty

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another way to check in realtime textField source      IBOutlet var textField1   UITextField   UITextField     override func viewDidLoad                    self textField1 addTarget self  action  Selector  yourNameFunction     forControlEvents  UIControlEvents EditingChanged       func yourNameFunction sender  UITextField         if sender text isEmpty            textfield is empty       else            text field is not empty

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Easy way to Check   if TextField stringValue isEmpty

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Okay  this might be late  but in Xcode 8 I have a solution   if textbox stringValue isEmpty           some code   else         some code

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Better and more beautiful use     IBAction func Button sender  AnyObject        if textField1 text isEmpty    textField2 text isEmpty

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use this extension    extension String       func isBlankOrEmpty   - gt  Bool             Check empty string       if self isEmpty             return true                  Trim and check empty string       return  self trimmingCharacters in   whitespaces                  like so      Disable the Save button if the text field is empty  let text   nameTextField text       saveButton isEnabled    text isBlankOrEmpty

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Swift 4 x Solution     IBOutlet var yourTextField  UITextField    override func viewDidLoad                    yourTextField addTarget self  action   selector actionTextFieldIsEditingChanged   for  UIControlEvents editingChanged         objc func actionTextFieldIsEditingChanged sender  UITextField         if sender text isEmpty             textfield is empty        else             text field is not empty

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As now in swift 3   xcode 8 text property is optional you can do it like this   if   textField text        isEmpty           is empty     or   if  textField text  isEmpty    true           is empty     Alternatively you could make an extenstion such as below and use it instead   extension UITextField       var isEmpty  Bool           return text  isEmpty    true               if  textField isEmpty           is empty

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I used UIKeyInput s built in feature hasText  docs  For Swift 2 3 I had to use it as a method instead of a property  as it is referenced in the docs    if textField1 hasText    amp  amp  textField2 hasText            both textfields have some text

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Swift 4 xcode 9 IBAction func button   sender  UIButton            if  textField1 text  isEmpty       textfield2 text  isEmpty

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if let     where        Swift 3   if let  text   theTextField text   text isEmpty           text is not empty here     Swift 2   if let theText   theTextField text where  theTextField text  isEmpty          theText is not empty here     guard     where     else    You can also use the keyword guard    Swift 3   guard let theText   theTextField text where theText isEmpty else          theText is empty     return    or throw       you can use theText outside the guard scope   print  user wrote   theText      Swift 2   guard let theText   theTextField text where  theTextField text  isEmpty else          the text is empty     return       you can use theText outside the guard scope   print  user wrote   theText      This is particularly great for validation chains  in forms for instance  You can write a guard let for each validation and return or throw an exception if there s a critical error

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Simply comparing the textfield object to the empty string    is not the right way to go about this  You have to compare the textfield s text property  as it is a compatible type and holds the information you are looking for    IBAction func Button sender  AnyObject        if textField1 text          textField2 text                    either textfield 1 or 2 s text is empty           Swift 2 0    Guard   guard let text   descriptionLabel text where  text isEmpty else       return   text characters count    do something if it s not empty   if   if let text   descriptionLabel text where  text isEmpty         do something if it s not empty       text characters count       Swift 3 0    Guard   guard let text   descriptionLabel text   text isEmpty else       return   text characters count    do something if it s not empty   if   if let text   descriptionLabel text   text isEmpty         do something if it s not empty       text characters count

User · Answer

Swift 4 2  You can use a general function for your every textField just add the following function in your base controller     White space validation  func checkTextFieldIsNotEmpty text String  - gt  Bool       if  text trimmingCharacters in   whitespaces  isEmpty                return false       else          return true

[swift] How to check if a text field is empty or not in swift

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