How to move cursor from one text field to another automatically in swift ios programmatically?

Question

    func textFieldDidBeginEditing(textField: UITextField) {
    scrlView.setContentOffset(CGPointMake(0, textField.frame.origin.y-70), animated: true)


    if(textF         


        

Answer 1

for swift 3

    func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
    // On inputing value to textfield
    if ((textField.text?.characters.count)! < 1  && string.characters.count > 0){
        let nextTag = textField.tag + 1;

        // get next responder
        let nextResponder = textField.superview?.viewWithTag(nextTag);
        textField.text = string;

        if (nextResponder == nil){
            textField.resignFirstResponder()
        }
        nextResponder?.becomeFirstResponder();
        return false;
    }
    else if ((textField.text?.characters.count)! >= 1  && string.characters.count == 0){
        // on deleting value from Textfield
        let previousTag = textField.tag - 1;

        // get next responder
        var previousResponder = textField.superview?.viewWithTag(previousTag);

        if (previousResponder == nil){
            previousResponder = textField.superview?.viewWithTag(1);
        }
        textField.text = "";
        previousResponder?.becomeFirstResponder();
        return false;
    }
    return true;
}

Answer 2

let do something different using IQKeyboardManager.It work like charm. Do not forget set delegate for every text field.

//MARK:- TextField delegate methods
@objc func textFieldDidChange(textField: UITextField){

    if textField.text!.count == 1{
        if IQKeyboardManager.shared().canGoNext{
            IQKeyboardManager.shared().goNext()
        }
    }else{
        if IQKeyboardManager.shared().canGoPrevious{
            IQKeyboardManager.shared().goPrevious()
        }
    }
}

func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
    if string == " "{
        return false
    }else if string.isEmpty{
        return true
    }else if textField.text!.count == 1{
        textField.text = string
        if IQKeyboardManager.shared().canGoNext{
            IQKeyboardManager.shared().goNext()
        }
        return false
    }
    return true
}

Answer 3

Firstly we'll need to set the tag for the UITextField;

func textFieldShouldReturnSingle(_ textField: UITextField , newString : String)
{
    let nextTag: Int = textField.tag + 1

    let nextResponder: UIResponder? = textField.superview?.superview?.viewWithTag(nextTag)
    textField.text = newString
    if let nextR = nextResponder
    {
        // Found next responder, so set it.
        nextR.becomeFirstResponder()
    }
    else
    {
        // Not found, so remove keyboard.
        textField.resignFirstResponder()
    }
}

func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {

    let newString = ((textField.text)! as NSString).replacingCharacters(in: range, with: string)

    let newLength = newString.characters.count

    if newLength == 1 {
        textFieldShouldReturnSingle(textField , newString : newString)
        return false
    }

    return true
}

Note: The UITextField takes only one character in number format, which is in OTP format.

Answer 4

update Solution For Swift 5

In This solution, You will go to next Field. And When You Press Erase will come at previous text field.

Step 1: Set Selector for Text Field

override func viewDidLoad() {
        super.viewDidLoad()

         otpTextField1.addTarget(self, action: #selector(self.textFieldDidChange(textField:)), for: UIControl.Event.editingChanged)
    otpTextField2.addTarget(self, action: #selector(self.textFieldDidChange(textField:)), for: UIControl.Event.editingChanged)
    otpTextField3.addTarget(self, action: #selector(self.textFieldDidChange(textField:)), for: UIControl.Event.editingChanged)
    otpTextField4.addTarget(self, action: #selector(self.textFieldDidChange(textField:)), for: UIControl.Event.editingChanged)
        
    }

Step 2: Now We will handle move next text Field and Erase text Field.

@objc func textFieldDidChange(textField: UITextField){
        let text = textField.text
        if  text?.count == 1 {
            switch textField{
            case otpTextField1:
                otpTextField2.becomeFirstResponder()
            case otpTextField2:
                otpTextField3.becomeFirstResponder()
            case otpTextField3:
                otpTextField4.becomeFirstResponder()
            case otpTextField4:
                otpTextField4.resignFirstResponder()
            default:
                break
            }
        }
        if  text?.count == 0 {
            switch textField{
            case otpTextField1:
                otpTextField1.becomeFirstResponder()
            case otpTextField2:
                otpTextField1.becomeFirstResponder()
            case otpTextField3:
                otpTextField2.becomeFirstResponder()
            case otpTextField4:
                otpTextField3.becomeFirstResponder()
            default:
                break
            }
        }
        else{

        }
    }

Important Note: Don't Forget To set Delegate.

Answer 5

I have tried many codes and finally this worked for me in Swift 3.0 Latest [March 2017]

The "ViewController" class should inherited the "UITextFieldDelegate" for making this code working.

class ViewController: UIViewController,UITextFieldDelegate 

Add the Text field with the Proper Tag nuber and this tag number is used to take the control to appropriate text field based on incremental tag number assigned to it.

override func viewDidLoad() {

 userNameTextField.delegate = self

        userNameTextField.tag = 0

        userNameTextField.returnKeyType = UIReturnKeyType.next

        passwordTextField.delegate = self

        passwordTextField.tag = 1


        passwordTextField.returnKeyType = UIReturnKeyType.go

}

In the above code, the "returnKeyType = UIReturnKeyType.next" where will make the Key pad return key to display as "Next" you also have other options as "Join/Go" etc, based on your application change the values.

This "textFieldShouldReturn" is a method of UITextFieldDelegate controlled and here we have next field selection based on the Tag value incrementation

func textFieldShouldReturn(_ textField: UITextField) -> Bool

    {

        if let nextField = textField.superview?.viewWithTag(textField.tag + 1) as? UITextField {

            nextField.becomeFirstResponder()

        } else {

            textField.resignFirstResponder()

            return true;

        }

        return false

    }

Answer 6

Swift 3 code to move the cursor from one field to another automatically in OTP(One Time Password) fields.

    //Add all outlet in your code. 
    @IBOutlet weak var otpbox1: UITextField!
    @IBOutlet weak var otpbox2: UITextField!
    @IBOutlet weak var otpbox3: UITextField!
    @IBOutlet weak var otpbox4: UITextField!
    @IBOutlet weak var otpbox5: UITextField!
    @IBOutlet weak var otpbox6: UITextField!
    // Add the delegate in viewDidLoad
    func viewDidLoad() {
        super.viewDidLoad()
        otpbox1?.delegate = self
        otpbox2?.delegate = self
        otpbox3?.delegate = self
        otpbox4?.delegate = self
        otpbox5?.delegate = self
        otpbox6?.delegate = self
    }
    func textField(_ textField: UITextField, shouldChangeCharactersIn range:NSRange, replacementString string: String) -> Bool {
        // Range.length == 1 means,clicking backspace
    if (range.length == 0){
        if textField == otpbox1 {
            otpbox2?.becomeFirstResponder()
        }
        if textField == otpbox2 {
            otpbox3?.becomeFirstResponder()
        }
        if textField == otpbox3 {
            otpbox4?.becomeFirstResponder()
        }
        if textField == otpbox4 {
            otpbox5?.becomeFirstResponder()
        }
        if textField == otpbox5 {
            otpbox6?.becomeFirstResponder()
        }
        if textField == otpbox6 {
            otpbox6?.resignFirstResponder() /*After the otpbox6 is filled we capture the All the OTP textField and do the server call. If you want to capture the otpbox6 use string.*/
            let otp = "\((otpbox1?.text)!)\((otpbox2?.text)!)\((otpbox3?.text)!)\((otpbox4?.text)!)\((otpbox5?.text)!)\(string)"
        }
        textField.text? = string
        return false
    }else if (range.length == 1) {
            if textField == otpbox6 {
                otpbox5?.becomeFirstResponder()
            }
            if textField == otpbox5 {
                otpbox4?.becomeFirstResponder()
            }
            if textField == otpbox4 {
                otpbox3?.becomeFirstResponder()
            }
            if textField == otpbox3 {
                otpbox2?.becomeFirstResponder()
            }
            if textField == otpbox2 {
                otpbox1?.becomeFirstResponder()
            }
            if textField == otpbox1 {
                otpbox1?.resignFirstResponder()
            }
            textField.text? = ""
            return false
    }
    return true
    }