uitextfield

问题 I have a table view controller with (among others) a cell that is to represent a date. I followed this post "How do I make a modal date picker that only covers half the screen?" and I have it working with one big exception - I can't get the picker to disappear! I tried registering for the event UIControlEventTouchUpOutside, but it seems that this is not generated by the picker (or at least in the mode that I am using it). How can I recognize that the user has finished selecting a date? Also,

问题 I am trying yo add UILongPressGestureRecognizer to one of UITextField on page but It does not call the selector method when Long Press the UiTextField. I added it to UItextField But it does not call the Selector method when I Long press the TextField but Showing the Magnifier on Field. [self.tfCustomerStreet addGestureRecognizer:LongPressgesture]; But it works fine and call the selector Method if I add it to the View. [[self view] addGestureRecognizer:LongPressgesture]; Initialization code in

问题 You can set the autocapitalizationType property of a UITextField so all input is in upper case. I find that does work fine on the simulator (when actually tapping the simulator's keypad, not the Mac's keyboard), but not on the device? Everything stays lowercase. In the UICatalog demo I added to the textFieldNormal method: textFieldNormal.autocapitalizationType = UITextAutocapitalizationTypeAllCharacters; Added a delegate too, to display the actual autocapitalizationType for the UITextField: -

问题 I tried @implementation UITextField (DisableCopyPaste) -(BOOL)canPerformAction:(SEL)action withSender:(id)sender { return NO; return [super canPerformAction:action withSender:sender]; } @end But it disables all textfield's copy/paste option,how to disable the menu options for specific textfield. 回答1: I think this method is ok,since no making of category etc.It works fine for me. [[NSOperationQueue mainQueue] addOperationWithBlock:^{ [[UIMenuController sharedMenuController] setMenuVisible:NO

问题 How do you add a text field to the title view of a navigation item and have it sized correctly? It works fine if I do this with a search bar like this but I don't know how to get a text field to size itself in the same way as a search bar. myViewController.navigationItem.titleView = [UISearchBar new]; 回答1: As my comment suggested, try the following, which seems to me is what you're after. UITextField *textField = [[UITextField alloc]initWithFrame:CGRectMake(0, 0, self.navigationController

问题 I want to programmatically paste a string into a text field or text view at the current caret position. Is there an easy way to do this? I would need to know the current caret position, but there's no method to retrieve it, right? Don't want to call private API. Is there any legal way to do it? 回答1: Use UITextView 's selectedRange method. If the range has a non-zero length (in the case of the user having selected some text), just take the location (or NSMaxRange() , or replace the entire

问题 I have searched the site for my answer, however I think it is also how I got myself into this problem. I'm trying to limit my 1 and only text field to 10 characters and only numbers. Below is code mostly off other questions on this site. What I am trying to do is mash this code together for my limits - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string { NSCharacterSet *cs = [[NSCharacterSet

问题 This question already has answers here : How to disable/enable the return key in a UITextField? (7 answers) Closed 4 years ago . When we enter character in textfield then it is enabling the return key. But in our requirement we need to enable the return key when length is more than 5. But now as soon as we enter character it is enabling the return key. Do we need to customize the keyboard or is there any other solution available. Thanks in advance. 回答1: Well I think you should handle it in

问题 How can I limit the number of characters in a UITextField? I.e if I limit it to 10 characters, the user will be unable to enter more than 10. Also I want to prevent him from entering some special characters like +, =, etc. How would I do this? 回答1: Here is a code sample to limit the size of a UITextField: - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string { if ([[textField text] length] + [string length] - range.length

问题 I have two textFields on the screen and a Submit button . User inputs details in first textField and then the second one. My requirement is to end the editing when Submit button is clicked and print the user inputs in these textFields .I am having issues printing the second textField's value, as the editing never seems to end when the user clicks the Submit button . Here is my code. Appreciate your help on this issue (I have added the textfield delegate) import UIKit class ViewController: