为什么我不能在iOS中更改按钮标题

Question

I am new to ios, and trying to change a simple button text from implementation side in an action. I have tried two of these: while one of them works, the other one doesnt !

self.Btn_Analyse.titleLabel.text = @"Stop Anlaysing";  // didnt work

And...

[self.Btn_Analyse setTitle:@"Deneme" forState:UIControlStateNormal]; //worked

why doesnt the first one work? PS: I have connected the button as IBOutlet

Answer 1

Why are you telling us what worked?

If it worked then there isn't a problem.

Anyway, the reason the first one didn't work is because a button is not just a label. It has various states and each state can have different properties.

You set the image for the state. You set the title for the state. etc...

Then with different states you can have different properties.

Answer 2

UIButton sets the title on its own, so if you directly change the text in label, button changes it back. That's because button can have different titles for different states (label can't do that), and sets the appropriate one automatcally.