Could not instantiate class named ADBannerView - ios

Question

i am trying to inset an iad banner at the bottom of my app but keep getting errors after following tutorials.
code as follows.
#interface DMKHomeViewController (UIViewcontroller ) <ADBannerViewDelegate>{
}
#end
#implementation DMKHomeViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
-(void)bannerViewDidLoadAd:(ADBannerView *)banner {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1];
[banner setAlpha:1];
[UIView commitAnimations];
}
- (void)bannerView:(ADBannerView *)
banner didFailToReceiveAdWithError:(NSError *)error
{
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1];
[banner setAlpha:0];
[UIView commitAnimations];
}
i keep getting the following error
* Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: 'Could not instantiate class named ADBannerView'
* First throw call stack:

Answer 1

Please make sure that you have added the "iAd.framework"...
To do this go to the "App. Target", "General" and scroll down until you see "Linked Frameworks and Libraries". Hit "+" and select the iAd framework. See screen captures below...

Answer 2

You have not created object of AdBannerview..
First, create object for banner view and set delegate for it.
-(void)ViewDidLoad
{
[self createBannerView];
}
- (void)createBannerView {
Class cls = NSClassFromString(#"ADBannerView");
if (cls) {
ADBannerView *adView = [[cls alloc] initWithFrame:CGRectZero];
// Set the current size based on device orientation
adView.currentContentSizeIdentifier = ADBannerContentSizeIdentifier320x50;
adView.delegate = self;
adView.autoresizingMask = UIViewAutoresizingFlexibleTopMargin |
UIViewAutoresizingFlexibleRightMargin;
// Set initial frame to be offscreen
CGRect bannerFrame =adView.frame;
bannerFrame.origin.y = self.view.frame.size.height;
adView.frame = bannerFrame;
self.bannerView = adView;
[self.view addSubview:adView];
[adView release];
}
}