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

Posted by WAI HEIN
WAI HEIN
1,640 Points

Why not working? I already initialise with UIImage

// 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 imageName:@"background"]; UIImageView *imageView = [[UIImageView alloc] initWithImage:background]; [self.view insertSubView:imageView atIndex:0];

1 Answer

Holger Liesegang
Holger Liesegang
50,595 Points
Holger Liesegang
Holger Liesegang
50,595 Points

Hi Wai,

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"];

So in completion that should be:

// 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];