didFailToReceiveAdWithError not working for iOS 8 simulators

Question

My iAd/AdMob mediation works fine with all iOS 7 simulators and devices. However, iOS 8 didFailToReceiveAdWithError method doesn\'t work for any simulators but it works for

Answer 1

This is everything you need to implement iAd and AdMob banners. It favors iAd and shows an AdMob banner if our app fails to receive an ad from iAd. I've seen alot of questions pertaining to this in the last few weeks so I've literally commented out as much as I can to help everyone understand what is exactly going on here.

// Import iAd and AdMob in your header file
#import "ViewController.h"
// Enter YOUR ad id you receive from AdMob here
#define BANNER_UNIT_ID @"yourAdMobBannerID"

@interface ViewController ()
@end

@implementation ViewController {
    //We will put these here so we can access them globally
    GADBannerView *adMobView;
    ADBannerView *iAdView;
    CGRect screenBounds;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Get device screen size
    // For example, screenBounds on an iPhone 6 will look like this
    // screenBounds.origin.x == 0
    // screenBounds.origin.y == 0
    // screenBounds.size.width == 375
    // screenBounds.size.height == 667
    screenBounds = [[UIScreen mainScreen] bounds];

    // Setup iAd view
    // Create the AdBannerView
    iAdView = [[ADBannerView alloc] initWithFrame:CGRectZero];

    // Set its delegate
    iAdView.delegate=self;

    // This sets the frame origin at (0,0) which would be the top left of the device screen
    // iAdView.bounds.size.width and iAdView.bounds.size.height sets the size of the AdBannerView
    [iAdView setFrame:CGRectMake(0, 0, iAdView.bounds.size.width, iAdView.bounds.size.height)];

    // This will take the center of our AdBannerView and move it to a point (x,y)
    // We want our AdBannerView.center in the center of the device screen
    // So lets get the width of our screen and divide it by 2. We do this with screenBounds.size.width / 2
    // We also want our AdBannerView to be at the bottom of the screen
    // So lets get the height of our screen with screenBounds.size.height
    // Remember were talking about the center of our AdBannerView here so if we just set it to that
    // Half of our AdBannerView's height will be cut off by the bottom of the screen
    // So lets subtract half of our AdBannerView's height to fix that with iAdView.bounds.size.height / 2
    iAdView.center = CGPointMake(screenBounds.size.width / 2, screenBounds.size.height - (iAdView.bounds.size.height / 2));

    // Add it to our view
    [self.view addSubview:iAdView];

    // Our AdBannerView is now at the bottom of our devices screen
    // But it takes a second to receive an ad from iAd's network so lets make it transparent for now
    iAdView.alpha = 0.0;


    // Setup AdMob view
    // Create the GADBannerView
    adMobView = [[GADBannerView alloc] initWithAdSize:kGADAdSizeBanner];

    // Use the BANNER_UNIT_ID we defined earlier
    adMobView.adUnitID = BANNER_UNIT_ID;
    adMobView.rootViewController = self;
    [adMobView loadRequest:[GADRequest request]];

    // This sets the frame origin at (0,0) which would be the top left of the device screen
    // adMobView.bounds.size.width and adMobView.bounds.size.height sets the size of the GADBannerView
    [adMobView setFrame:CGRectMake(0, 0, adMobView.bounds.size.width, adMobView.bounds.size.height)];

    // This will take the center of our GADBannerView and move it to a point (x,y)
    // We want our GADBannerView.center in the center of the device screen
    // So lets get the width of our screen and divide it by 2. We do this with screenBounds.size.width / 2
    // We also want our GADBannerView to be at the bottom of the screen
    // So lets get the height of our screen with screenBounds.size.height
    // Remember were talking about the center of our GADBannerView here so if we just set it to that
    // Half of our GADBannerView's height will be cut off by the bottom of the screen
    // So lets subtract half of our GADBannerView's height to fix that with adMobView.bounds.size.height / 2
    adMobView.center = CGPointMake(screenBounds.size.width / 2, screenBounds.size.height - (adMobView.bounds.size.height / 2));

    // Add it to our view
    [self.view addSubview:adMobView];
    // We don't have to set the alpha of GADBannerView to 0.0 because it is automatically transparent if no ad is available
}

//iAd methods
-(void)bannerViewDidLoadAd:(ADBannerView *)banner {
    NSLog(@"iAd received ad");
    // We received an ad from iAd so lets show it
    // We will animate the transition of its alpha from 0.0 to 1.0
    // Also lets animate our GADBannerView from 1.0 to 0.0 to hide it
    [UIView beginAnimations:nil context:NULL];
    iAdView.alpha = 1.0;
    adMobView.alpha = 0.0;
    [UIView commitAnimations];
}

-(void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error {
    NSLog(@"iAd failed");
    // We failed to receive an ad from iAd so lets hide it
    // We will animate the transition of its alpha from 1.0 to 0.0
    // Also lets animate our GADBannerView from 0.0 to 1.0 to show it
    // AdMob has near a 100% fill rate so the chances of there being an ad are almost certain
    [UIView beginAnimations:nil context:NULL];
    iAdView.alpha = 0.0;
    adMobView.alpha = 1.0;
    [UIView commitAnimations];
}

To have the ads at the top of the screen we need to change the CGPoints we are assigning to our ad view's centers.

// This will take the center of our AdBannerView and move it to a point (x,y)
// We want our AdBannerView.center in the center of the device screen
// So lets get the width of our screen and divide it by 2. We do this with screenBounds.size.width / 2
// We also want our AdBannerView to be at the top of the screen
// So lets get the origin of our screen with screenBounds.origin.y
// Remember were talking about the center of our AdBannerView here so if we just set it to that
// Half of our AdBannerView's height will be cut off by the top of the screen
// So lets add half of our AdBannerView's height to fix that with iAdView.bounds.size.height / 2
iAdView.center = CGPointMake(screenBounds.size.width / 2, screenBounds.origin.y + (iAdView.bounds.size.height / 2));

// This will take the center of our GADBannerView and move it to a point (x,y)
// We want our GADBannerView.center in the center of the device screen
// So lets get the width of our screen and divide it by 2. We do this with screenBounds.size.width / 2
// We also want our GADBannerView to be at the top of the screen
// So lets get the origin of our screen with screenBounds.origin.y
// Remember were talking about the center of our GADBannerView here so if we just set it to that
// Half of our GADBannerView's height will be cut off by the top of the screen
// So lets add half of our GADBannerView's height to fix that with adMobView.bounds.size.height / 2
adMobView.center = CGPointMake(screenBounds.size.width / 2, screenBounds.origin.y + (adMobView.bounds.size.height / 2));