ios – 无法实例化名为ADBannerView的类

我试图在我的应用程序的底部插入一个iad横幅,但在遵循教程后不断收到错误.
代码如下.

@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];

}

我一直收到以下错误
*由于未捕获的异常’NSInvalidUnarchiveOperationException’终止应用程序,原因：’无法实例化名为ADBannerView的类’
*第一次抛出调用堆栈：

解决方法

请确保您已添加“iAd.framework”…

要执行此操作,请转到“App.Target”,“General”并向下滚动,直到您看到“Linked Frameworks and Libraries”.点击“”并选择iAd框架.请参阅下面的屏幕截图…