iPhone how to get UITextField's text while typing? - iphone

Question

I'm trying to show changes made to a UITextField on a separate UILabel. Is there a way to capture full text of the UITextField after each character the user types in? Currently I'm using this method, but it does not capture the last character that the user has entered.
I know that UITextView has "didChange" method, but I could not find that method for a UITextField.
//does not capture the last character
-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
[self updateTextLabelsWithText: textField.text];
return YES;
}
How can I take text out of UITextField after each character entered?
Thank you!

Answer 1

First add one UITextField and UILabel to storyboard / nib
Now assign IBOutlet for UILabel (Here I have used myLabel)
Assign UITextFieldDelegate to file owner, also implement the same delegate in .h file
Use these lines of code:
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
NSString *newString = [textField.text stringByReplacingCharactersInRange:range withString:string];
[self updateTextLabelsWithText: newString];
return YES;
}
-(void)updateTextLabelsWithText:(NSString *)string
{
[myLabel setText:string];
}

Answer 2

Simply handle the "Editing Changed" event
[textField addTarget:self
action:#selector(editingChanged:)
forControlEvents:UIControlEventEditingChanged];
and the selector:
-(void) editingChanged:(id)sender {
// your code
}
You can do this manually, or with the storyboard by CTRL-Dragging the "Editing changed" Sent event to your .h, creating the editingChanged method for you.

Answer 3

Swift with addTarget Swift 2.0+
titleTextField.addTarget(self, action: #selector(textFieldTyping), forControlEvents: .EditingChanged)
And implement selector
func textFieldTyping(textField:UITextField)
{
//Typing
}

Answer 4

In Swift 2.0+
class CheckInViewController: UIViewController, UITextFieldDelegate {
override func viewDidLoad() {
super.viewDidLoad()
yourTextField.delegate = self
}
func textField(textField: UITextField!, shouldChangeCharactersInRange range: NSRange, replacementString string: String!) -> Bool {
var updatedTextString : NSString = textField.text as NSString
updatedTextString = updatedTextString.stringByReplacingCharactersInRange(range, withString: string)
self.methodYouWantToCallWithUpdatedString(updatedTextString)
return true
}
}
Hope it helps you swift pioneers

Answer 5

In Swift 3.0:
Some of these solutions were one character behind, or for earlier versions of Swift and Obj-C. Here is what I am using for Swift 3.0
In the class I declared a placeholder to store the text.
var tempName = ""
In ViewDidLoad I used:
nameField.addTarget(self, action: #selector(typingName), for: .editingChanged)
Then I made a function called:
func typingName(textField:UITextField){
if let typedText = textField.text {
tempName = typedText
print(tempName)
}
}

Answer 6

Swift 3.0+: This worked very nicely for me.
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
self.yourLabel.text = "\(textField.text ?? "")\(string)"
return true
}

Answer 7

func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
if textField == yourTextFieldOutletName
{
if yourTextFieldOutletName.isEmpty == false
{
youtlabelname.text = yourTextFieldOutletName.text!
}
}
return true
}
func textViewDidEndEditing(_ textView: UITextView) {
if textField == yourTextFieldOutletName
{
if yourTextFieldOutletName.isEmpty == false
{
youtlabelname.text = yourTextFieldOutletName.text!
}
}
}