CODEWITHSUNDEEP
iosobjective-cuitextfield
hornet
hornet

Reputation: 15

I cannot set text of my Custom Text Field

I am trying to make a custom TextField (KSTextField). I inherited my text field from UITextField. As you can see my KSTextField.h file below.

#import <UIKit/UIKit.h>
#import <UIKit/UITextField.h>

@interface KSTextField : UITextField {}

@end

In my KSTextField.m i tried to set a dummy text attribute. But it doesn't work. Is super.text usage wrong?

My main purpose is, making a custom UITextField that only allows for upper case characters which is needed for my project.

#import "KSTextField.h"

@implementation KSTextField

- (id)init {
    self = [super init];

    super.text = @"help";
    return self;
}

- (void)textFieldDidChangeForKS:(KSTextField *)textField {
    self.autocapitalizationType = UITextAutocapitalizationTypeAllCharacters;
    NSString *textToUpper = [textField.text uppercaseString];
    [self setText:textToUpper];
}

@end

And also mine ViewController.h is below

#import <UIKit/UIKit.h>
#import "KSTextField.h"

@interface ViewController : UIViewController 


@property (nonatomic, copy) IBOutlet KSTextField *txtKsName;


@end

Here's my ViewController.m which i want to set my KSTextField.text

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    self.txtKsName = [[KSTextField alloc] init];

}

Delegate events do not solve my issue. Because i'll add much more features later. It will be my custom textfield thanks!

Upvotes: 1

Views: 573

Answers (1)

woz
woz

Reputation: 10994

The answer is: you're doing it wrong! You don't have to subclass to allow uppercase characters only. Use a UITextFieldDelegate:

http://developer.apple.com/library/ios/#documentation/uikit/reference/UITextFieldDelegate_Protocol/UITextFieldDelegate/UITextFieldDelegate.html

Using the textField:shouldChangeCharactersInRange:replacementString: method, you can say whether on not the character typed is allowed to be added to the box.

Try something like this:

- (BOOL)textField:(UITextField *)field shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)characters
{
    NSCharacterSet *blockedCharacters = [[[NSCharacterSet uppercaseLetterCharacterSet] invertedSet] retain];
    return ([characters rangeOfCharacterFromSet:blockedCharacters].location == NSNotFound);
}

Upvotes: 2

Related Questions