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iOS Build a Simple iPhone App (iOS7) Designing your App Programming a Background Image

I simply cannot understand how to complete this !

I need to pass a UIImage to the instance variable "backgroundImage". But there is no external or internal file or anything. otherwise I will need to pass a string (@"background").

3 Answers

Holger Liesegang
Holger Liesegang
50,595 Points

I just tested Challenge task 1 of 1 with

// The following code is excerpted from 
// the viewDidLoad method of THViewController.m

// Fix the code below 
// Hint: First create an instance of UIImage

UIImage *background = [UIImage imageNamed:@"background"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:background];

and it passed without a problem. I'm afraid you tried to declare the 'UIImage *background' after the 'imageView' declaration, and '[[UIImageView alloc] initWithImage:background]' already needs to have the 'background' variable.

Holger Liesegang
Holger Liesegang
50,595 Points

Hi Tom,

the question ist "Our Random Quotes app is looking bland and we need to add a background image to it. We started to create a UIImageView, however, the code does not seem to work. Figure out what is wrong and if you need to declare another object to complete this declaration."

So, we've got two tasks to accomplish here:

(1) "Figure out what is wrong..."

- (id)initWithImage:(UIImage *)image likes to have a UIImage and not a NSString, so:

UIImageView *imageView = [[UIImageView alloc] initWithImage:background];

and

(2) "...if you need to declare another object to complete this declaration..."

You first need to declare the UIImage, that's used in the UIImageView:

UIImage *background = [UIImage imageNamed:@"background"];

Kind Regards Holger

This is still bringing up an error =[. It says that UIImageView needs to be initialized a UIIMage object.