我正在尝试在我的应用中添加横幅,但由于我添加了横幅广告,因此该应用无法启动。
我收到错误说:
由于未捕获的异常'NSInvalidUnarchiveOperationException'而终止应用程序,原因:'无法实例化名为ADBannerView的类'
.h文件中的代码:
#import <iAd/iAd.h>
@interface FirstViewController : UIViewController <ADBannerViewDelegate>
{
ADBannerView *banner;
}
@property (nonatomic,assign) BOOL bannerIsVisible;
@property (nonatomic,retain) IBOutlet ADBannerView *banner;
.m文件中的代码:
@synthesize banner, bannerIsVisible;
-(void)bannerViewDidLoad: (ADBannerView *)abanner
{
if(!self.bannerIsVisible)
{
[UIView beginAnimations:@"animatedAdBannerOn" context:NULL];
banner.frame=CGRectOffset(banner.frame, 0.0, 50.0);
[UIView commitAnimations];
self.bannerIsVisible=YES;
}
}
-(void)bannerView:(ADBannerView *)aBanner
{
if(!self.bannerIsVisible)
{
[UIView beginAnimations:@"animatedAdBannerOff" context:NULL];
banner.frame=CGRectOffset(banner.frame, 0.0, -320.0);
[UIView commitAnimations];
self.bannerIsVisible=NO;
}
}
你认为错在哪里?
答案 0 :(得分:19)
您必须将iAd.framework添加到项目中。
答案 1 :(得分:1)
拿这段代码:
#import <iAd/iAd.h>
@interface ViewController : UIViewController <ADBannerViewDelegate> {
}
@end
.m文件:
@implementation ViewController
-(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];
}
@end