Question

So I’ve got some textfield laid up in my controller..

The Controller extends UITextFieldDelegate so it handlers textFieldDidBeginEditing for those textfields, and all that works fine!

Then I tried to added a new textfield from a new class called TestTextField.

I changed the custom class in the storyboard to TestTextField and implemented the following way:
(what happens is that the simulator starts and NSLog prints “init!” and then when I press the TestTextField NSLog prints “begin” and after that the simulator stops with EXC_BAD_ACCESS.)

TestTextField.m

#import "TestTextField.h"

@implementation TestTextField

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
    }
    return self;
}

- (id) initWithCoder:(NSCoder *) coder
{
    self = [super initWithCoder:coder];
    NSLog(@"init!");
    self.delegate = self;
    return self;
}

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
    // Drawing code
}
*/

- (void)textFieldDidBeginEditing:(UITextField *)textField
{
    NSLog(@"begin");
}

- (void)textFieldDidEndEditing:(UITextField *)textField
{
    NSLog(@"end ");

}

- (BOOL)textFieldShouldReturn:(UITextField *)theTextField {
    return YES;
}

@end

TextField.h

#import <UIKit/UIKit.h>

@interface TestTextField : UITextField <UITextFieldDelegate>

@end

Answer 1

By now I am pretty sure what happend, since this is a long time ago.

I’m 99% certain that this problem was due to leaving the “Custom class” value in XCode with some old value that didnt exist anymore.