Question

I have an IPhone application in which I am using an IBOutlet button with a background. On its click, I call a webservice and on the success of that, I need to change the background of the button. Now I am doing it in this way but nothing’s happening:

UIImage *buttonImage = [UIImage imageNamed:@"follow_shop.png"];
[following setBackgroundImage:buttonImage forState:UIControlStateNormal]; 

Does anybody know how to achieve this?

Answer 1

What you have done in code is correct. You can do three things now (in decreasing order of probability of finding the issue):

1) Check in your IB if initially, you have set its image or backgroundImage. The two are different and image comes above the backgroundImage(effectively rendering backgroundImage as being hidden). Both of these (the image you set in IB and in code) should be either one (image or backgroundImage).

2) Check if follow_shop.png is the correct name. You can also use breakpoints to see if buttonImage has memory or not.

3) Check if following is connected in your IB.