Admob to load when iAds fail - objective-c

Question

I just added my first free app to the app store with iAds which work ok when the ads load, so I've had a good read up and it seems a better way is to have admob to load when iads fail.
I can get iads working on there own and admob working on there own but not together any help would be great.
I need to get admob to load when didFailToReceiveAdWithError.
my code for iAds
-(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];
}
my admob code only seems to work in [super viewDidLoad];
here my admob code
CGPoint origin = CGPointMake(0.0,
self.view.frame.size.height + 2 - CGSizeFromGADAdSize(kGADAdSizeBanner).height);
bannerView_ = [[GADBannerView alloc] initWithAdSize:kGADAdSizeBanner origin:origin];
bannerView_.adUnitID = MY_BANNER_UNIT_ID;
bannerView_.rootViewController = self;
[self.view addSubview:bannerView_];
[bannerView_ loadRequest:[GADRequest request]];

Answer 1

Place your code in the iad didFailToReceiveAdWithError code like this
-(void) bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1];
[banner setAlpha:0];
[UIView commitAnimations];
//////Admob Code
CGPoint origin = CGPointMake(0.0,
self.view.frame.size.height + 2 - CGSizeFromGADAdSize(kGADAdSizeBanner).height);
bannerView_ = [[GADBannerView alloc] initWithAdSize:kGADAdSizeBanner origin:origin];
bannerView_.adUnitID = MY_BANNER_UNIT_ID;
bannerView_.rootViewController = self;
[self.view addSubview:bannerView_];
[bannerView_ loadRequest:[GADRequest request]];
}