uitextfield

问题 Swift in playground on Mac OS. When the user clicks in a UItextfield, a keyboard spawns but it is very large compared to the view and only the first few keys are available. minimal example: import UIKit import PlaygroundSupport class TesterViewController : UIViewController { var testTextField : UITextField! override func loadView() { let view = UIView() view.backgroundColor = .white testTextField = UITextField() testTextField.borderStyle = .roundedRect testTextField.text = "" view.addSubview

问题 How do I prevent the editing of text in a UITextField along with hiding the cursor/caret/magnifying glass, but still present the keyboard, as I am using an inputView with a UIPickerView / UIDatePickerView ? Setting userInteractionEnabled to NO does not work, because it no longer receives any touches and will not present the keyboard. 回答1: Subclass UITextField //Disables caret - (CGRect)caretRectForPosition:(UITextPosition *)position { return CGRectZero; } //Disables magnifying glass -(void

问题 Let's say I have a custom UIView, lets call it MyCustomView. Inside this view is a UITextField property. Suppose my goal is to be able to create an instance of MyCustomView and add it to some view controller somewhere, and I want that view controller to be able to handle actions taken on that text field. For example, if I hit "return" on the keyboard within the text field, I may want to do some action - let me give an example of what I'm envisioning with some objective-c psuedo code:

问题 I am making a basic currency conversion app in an attempt to learn ios development, but cannot figure out how to listen to UITextField events. this is my code so far: // // ViewController.swift // Currency // import UIKit class ViewController: UIViewController , UIPickerViewDelegate , UIPickerViewDataSource , UITextViewDelegate , UITextFieldDelegate { @IBOutlet var pickerView : UIPickerView! @IBOutlet var inputTextField : UITextField! @IBOutlet weak var outputText: UILabel! // definface

问题 How can I check what exactly and where a string changed in my textfieldDidChange method? let str1 = "Hello how are you @Marie, nice day uh?" So imagine my user decides to edit the text and link markus instead of marie let str2 = "Hello how are you @ Markus, nice day uh?" I need a method that detect the change of @ Markus in the text field but doesn't change anything else in the string. I am able to detect last word, first word and so one, but its important to also see what changed within the

问题 I have an iOS app using a tabBarController. Each tabs root view is a navigation controller. In one of the tabs I use a button on the navigation bar to push me to UIViewController that contains a UITextView. The problem I am struggling with is that any content added to the UITextView is lost when back button on the navigation bar is pushed. I have found a few similar questions all with drastically different solutions. I am not sure how to proceed from here. To be clear on what I would like to

问题 In iOS, I am using one text field the length of the text field id too long so it is showing dots at the end of the text field. I need to remove the dots. I have used lineBreakMode also. See the code I'm using. CGSize maximumSize = CGSizeMake(titleListTxtFld.frame.size.width, 1000); //here 1000 for maximum height u can increase this if u want CGSize strSize = [titleListTxtFld.text sizeWithFont:titleListTxtFld.font constrainedToSize:maximumSize lineBreakMode:UILineBreakModeClip]; CGRect

问题 I have a simple UITableViewController with 6 rows, each with a UITextField . I want to be able to click on each row and have the keyboard apply to each. Everything works, except for some reason I have to click on each row twice to get the responder to make the next UITextField active. I put in UITextFieldDelegate printouts and the order of their actions seems wrong. Each of the TextFields has been tagged 0 - 5. When I select the first, there is no problem, the keyboard comes up, I enter

问题 I added bottom border to UITextField this way: let bottomLine = CALayer() bottomLine.frame = CGRectMake(0.0, self.frame.height, self.frame.width, CGFloat(borderWidth)) bottomLine.backgroundColor = borderColor.CGColor self.borderStyle = UITextBorderStyle.None self.layer.addSublayer(bottomLine) How can I change the border color of this bottom line when UITextField call textFieldDidBeginEditing() and then change back color to default when it calls textFieldDidEndEditing() I'm using a custom

问题 I would like to disable the alert button when the text box is null. I put the button in Table View Cell. So, when you click that button, the alert box will pop up. My codes are below. func cellTapped(cell: DeviceListTableCell) { self.showAlertForRow(row: tableView.indexPath(for: cell)!.row) } func showAlertForRow(row: Int) { let alert = UIAlertController( title: "Enter Password !!!!!", message: "", preferredStyle: .alert) alert.addTextField { (textField) in } let okAction = UIAlertAction