[Solved] Can’t set cell title’s text

Since you declared title and text as properties, but for some reason get the exception:
[Notez setTitle:]: unrecognized selector sent to instance, apparently

I can only make another guess here. Usually, when declaring a property, you get a setter and a getter method for it. This way you can omit writing these by hand if you have a lot of instance variables on a class.

Using dot notation is then equivalent to calling the setter or the getter. So in your case

newNote.title = [NSString stringWithFormat:@"23"];

is equivalent to:

[newNote setTitle:[NSString stringWithFormat:@"23"]];

Now, the exception that you suggests that the setter method: setTitle: actually does not exist on your object. I’m not sure what the reason for this might be, but you could try to explicitly synthesize your properties.

Therefor, in your .m-file add the following lines of code:

@synthesize title;
@synthesize text;

Not sure if this will actually solve your issue, but I hope the explanation of properties, getters and setters helps you to understand a little more what’s going on.