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Rob Chapman
Courses Plus Student 3,755 PointsFollowed the tutorial but then the application failed to run after adding animation
Followed the steps in the video but I got four errors which did not appear in the tutorial.
When I added the line self.backgroundImageView.animationImages = [[NSArray alloc] initWithObjects: the error said Property 'animationImages' not found on object of view type 'UIView*'
Then the lines self.backgroundImageView.animationDuration = 2.5f; and self.backgroundImageView.animationRepeatCount = 1; were both met with the errors Property 'animationDuration' not found on object of type 'UIView*' and Property 'animationRepeatCount' not found on object of type 'UIView*' respectivly.
Finally [self.backgroundImageView startAnimating]; said No visible @interface for'UIView' declares the sector 'startAnimating'.
Any help would be appreciated, thanks.
2 Answers
Pierre Thalamy
4,494 PointsI will need some additional details, could you upload your project folder to Dropbox and send me the link, so I can have a look at it?
EDIT: Check that your IBOutlet is linked to a UIImageView object on the Main.storyboard, and not any other kind of object. Perhaps try relinking it as well. You can find a little more info about SIGABRT in this SO thread, yet it this is not a very specific error, so you cannot easily know what is causing it.
Pierre Thalamy
4,494 PointsbackgroundImageView is a UIImageView object, not a UIView.
You probably incorrectly declared the property in the viewController header file, check that this line appears in it:
@property (weak, nonatomic) IBOutlet UIImageView *backgroundImageView;
Rob Chapman
Courses Plus Student 3,755 PointsI have just checked this and realised I had written UIImage and not UIIMageView. I have changed this but now when I run the application it is just a black screen. It takes me to a screen under thread 1 and the line,
return UIApplicationMain(argc, argv, nil, NSStringFromClass( [JBAppDelegate class]));
is highlighted and on the far right it says Thread 1: signal SIGABRT. I have never seen this screen before and i dont know what it means.
Rob Chapman
Courses Plus Student 3,755 PointsRob Chapman
Courses Plus Student 3,755 PointsThanks this has fixed the problem. I deleted the code for the IBOutlet and then relinked it and now it works fine.