This is how I would do it. The validation should be done at the end when the user has typed in the password and not in between.I will not be using NSRegularExpression. -(void)textFieldDidEndEditing:(UITextField *)textField{ int numberofCharacters = 0; BOOL lowerCaseLetter,upperCaseLetter,digit,specialCharacter = 0; if([textField.text length] >= 10) { for (int i = 0; i < [textfield.text … Read more
You can “trim” the text, that is remove all the whitespace at the start and end. If all that’s left is an empty string, then only whitespace (or nothing) was entered. NSString *rawString = [textField text]; NSCharacterSet *whitespace = [NSCharacterSet whitespaceAndNewlineCharacterSet]; NSString *trimmed = [rawString stringByTrimmingCharactersInSet:whitespace]; if ([trimmed length] == 0) { // Text was … Read more
You can “trim” the text, that is remove all the whitespace at the start and end. If all that’s left is an empty string, then only whitespace (or nothing) was entered. NSString *rawString = [textField text]; NSCharacterSet *whitespace = [NSCharacterSet whitespaceAndNewlineCharacterSet]; NSString *trimmed = [rawString stringByTrimmingCharactersInSet:whitespace]; if ([trimmed length] == 0) { // Text was … Read more
Use NSPredicate and Regex: – (BOOL)validateEmailWithString:(NSString*)email { NSString *emailRegex = @”[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}”; NSPredicate *emailTest = [NSPredicate predicateWithFormat:@”SELF MATCHES %@”, emailRegex]; return [emailTest evaluateWithObject:email]; } For a bunch of emails separated by a comma: – (NSMutableArray*)validateEmailWithString:(NSString*)emails { NSMutableArray *validEmails = [[NSMutableArray alloc] init]; NSArray *emailArray = [emails componentsSeparatedByString:@”,”]; for (NSString *email in emailArray) { NSString *emailRegex = … Read more
The “bullet” character is at Unicode code point U+2022. You can use it in a string with @”\u2022″ or [NSString stringWithFormat:@”%C”, 0x2022]. The “line feed” character is at Unicode code point U+000A, and is used as UIKit’s newline character. You can use it in a string with @”\n”. For example, if you had an array … Read more
To solve your problem you have to maintain an array, with some number (number of textFields you added to all cells) of objects. While creating that array you need add empty NSString objects to that array. And each time while loading the cell you have to replace the respected object to respected textField. Check the … Read more
if the UITextField is empty, the shouldChangeTextInRange delegate method is not called You can subclass UITextField and override this method: -(void)deleteBackward; { [super deleteBackward]; NSLog(@”BackSpace Detected”); } since UITextField is compliant to the UITextInput protocol, this method is implemented, and you can override it to detect when backspace is pressed. Then, you can write your … Read more
Check these answers: How to create a multiline UITextfield? How to create a multiline UITextfield? http://brettschumann.com/blog/2010/01/15/iphone-multiline-textbox-for-sms-style-chat And definitly try Three20 which is a great library used in many app like Facebook. Edit: Added extract from BrettSchumann blog #import <uikit uikit.h=””> @interface MultilineTextboxViewController : UIViewController { IBOutlet UIView *viewTable; IBOutlet UIView *viewForm; IBOutlet UITextView *chatBox; IBOutlet … Read more
Call [UIView superview] on the field to get the cell that it’s in, then call [UITableView indexPathForCell:] on the cell to get the index path. UPDATE: on iOS 7 you need to call superview on that view too (extra layer of views); here’s a category on UITableView that should work independent of iOS version: @interface … Read more
There is a problem with your approach if the number of rows in your table exceeds the number that can fit on screen. In that case, the cells that scroll off-screen will be re-used, and the contents of the nameInput textField will be lost. If you can be sure that this will never happen, use … Read more