uitextfielddelegate

I am trying to apply NSAttributedString styles to a UITextField after processing a new text entry, keystroke by keystroke. The problem is that any time I replace the text the cursor will jump the very end on each change. Here's my current approach … Receive and display text change immediately (same issue applies when I return false and do the text replacement manually) func textField(textField: UITextField!, shouldChangeCharactersInRange range: NSRange, replacementString string: String!) -> Bool { let range:NSRange = NSRange(location: range.location, length: range.length) let newString =

How can I call func checkField when nextButton is tapped? If no field is empty in ManagedTableEleventhViewController, I'd like to segue to TwelvethViewController. I have a UIViewController ElevethViewController which holds a container view. The container view has an embed segue to a UITableViewController ManagedTableEleventhViewController . From ElevethViewController there is a Show segue to a UIViewController TwelevethViewController The View hierarchy looks like this: ElevethViewController Container View ManagedTableEleventhViewController embedded in Container View with Embed segue Show segue

I have this error while messing with UITextField delegate: Can't find keyplane that supports type 8 for keyboard Wildcat-Landscape-QWERTY-Pad; using 3673479387_Wildcat-Alphabetic-Keyboard_Capital-Letters Someone have any idea what is it? Thanks in advance. for iPad you can't use keyboard type: Decimal Pad ; you must change it to Number and Punctuation , etc 来源： https://stackoverflow.com/questions/16486312/weird-error-while-using-uitextfielddelegate

I am trying to use Regex expressions but this does not work and I don't understand why. The println is not showing up in the output. I followed this tutorial to use this class : class Regex { let internalExpression: NSRegularExpression let pattern: String init(_ pattern: String) { self.pattern = pattern var error: NSError? self.internalExpression = NSRegularExpression(pattern: pattern, options: .CaseInsensitive, error: &error) } func test(input: String) -> Bool { let matches = self.internalExpression.matchesInString(input, options: nil, range:NSMakeRange(0, countElements(input))) return

I'm trying to format an expiry field so that it formats the text as follows: MM / YY I can get the textfield to add in the extra characters when the user is typing however when I come to delete the numbers the code will not allow you to go passed two characters before adding in the " / " again. Is there a way I can recognise when the user is deleting and bypass the text field check? ExpiryOutlet.addTarget(self, action: #selector(ExpiryDidChange(_:)), for: .editingChanged) func ExpiryDidChange(_ textField: UITextField) { if textField == ExpiryOutlet { if textField.text != "" && textField.text?