iAd - 无法点击横幅

Question

I am creating a universal-app template.

This template will need to support optional iAds, and optionally all orientations.

I coded up a solution only to find a bizarre bug. in certain situations I was unable to click on the banner

I then recoded another revision, tidied everything, and gutted out most of the code to reveal a minimal test case failure.

https://github.com/pi-/iAdUniversalTemplate/commit/2c829d268a9452e1a054802e7ccb9cde5de17853

In this new code, only 3 views: window, uberview (the view controller's view), and the ad-banner

So, the banner displays properly once it has been served, autorotation works fine... I have logged the frame and bounds for each, and everything is as it should be.

But it is not responding to tap (well, click because I am in the simulator)

What could possibly be wrong? I'm starting to suspect that in cutting the XIB out of the project and implementing the window and view controller from code, I have missed something out or wired something up back to front.

Juicy code chunks:

AppDelegate.m

- (BOOL) application: (UIApplication *) application 
didFinishLaunchingWithOptions: (NSDictionary *) launchOptions 
{
    NSLog(@"--> ___PROJECTNAME___AppDelegate:didFinishLaunchingWithOptions...");

    // FIXED: now entry in info.plist hides SB BEFORE launch
    [[UIApplication sharedApplication] setStatusBarHidden: (SHOW_SB ? NO : YES)];

    CGRect appFrame = [UIScreen mainScreen].applicationFrame;

    // windowRect must start at 0, 0
    // if (SHOW_SB == YES), appFrame will be '{{0, 20}, {320, 460}}'
    CGRect windowRect = CGRectMake(0, 0, appFrame.size.width, appFrame.size.height);

    self.window = [[[UIWindow alloc] initWithFrame: windowRect] autorelease];

    self.viewController = [ [ [ ___PROJECTNAME___ViewController alloc ] init ] autorelease ];

    [self.window setRootViewController: viewController];

    // triggers loadView
    [self.window makeKeyAndVisible];

    return YES;
}

iAdVC.m

- (void) loadView 
{       
    self.uberView = [[[UIView alloc] initWithFrame: [UIScreen mainScreen].applicationFrame] autorelease];
    self.uberView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
    self.uberView.autoresizesSubviews = YES;
    self.uberView.clipsToBounds = YES;

    //UIWindow * w = self.view.window;
    //w.clipsToBounds = YES;

    [self setView: uberView];

    showingBanner = NO;
    adBannerView = nil;
    if (IADS_ENABLED)
    {
        NSString * P = ADBannerContentSizeIdentifierPortrait;
        NSString * L = ADBannerContentSizeIdentifierLandscape;

        self.adBannerView = [[[ADBannerView alloc] initWithFrame:CGRectZero] autorelease];

        self.adBannerView.delegate = self;
        self.adBannerView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleTopMargin;
        self.adBannerView.requiredContentSizeIdentifiers = [NSSet setWithObjects: P, L, nil];
        self.adBannerView.currentContentSizeIdentifier = UIInterfaceOrientationIsPortrait( self.interfaceOrientation ) ? P : L ;

        [uberView addSubview: adBannerView];
    }

    UIWindow * w = [[UIApplication sharedApplication] keyWindow];

    w.userInteractionEnabled = YES;
    self.uberView.userInteractionEnabled = YES;
    self.adBannerView.userInteractionEnabled = YES;

    w.clipsToBounds = YES;
    self.uberView.clipsToBounds = YES;
    self.adBannerView.clipsToBounds = YES;

    w.opaque = YES;
    self.uberView.opaque = YES;
    self.adBannerView.opaque = YES;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - -

#pragma mark Autorotate

- (BOOL) shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation) interfaceOrientation 
{   
    return YES;
}

// - - - - - - - - - - - - - - - - - - - - - - - - - -

- (void) willRotateToInterfaceOrientation: (UIInterfaceOrientation) newOrientation 
                                 duration: (NSTimeInterval) duration
{
    bool isLandscape = UIInterfaceOrientationIsLandscape(newOrientation);
    self.adBannerView.currentContentSizeIdentifier = isLandscape ? ADBannerContentSizeIdentifierLandscape : ADBannerContentSizeIdentifierPortrait ;
}


#pragma mark Banner

// - - - - - - - - - - - - - - - - - - - - - - - - - -

- (void) bannerViewDidLoadAd: (ADBannerView *) banner 
{   
    if (! showingBanner)
    {
        showingBanner = YES;
        // ... (optionally animate in)
    }
}


// - - - - - - - - - - - - - - - - - - - - - - - - - -

- (void) bannerView: (ADBannerView *) banner 
didFailToReceiveAdWithError: (NSError *) error
{
    NSLog(@"FAIL");

    if (showingBanner)
    {
        showingBanner = NO;
        // ... (optionally animate out)
    }
}

// - - - - - - - - - - - - - - - - - - - - - - - - - -

-(BOOL) bannerViewActionShouldBegin: (ADBannerView *) banner 
               willLeaveApplication: (BOOL) willLeave
{
    return YES; // doesnt get hit
}

// = = = = = = = = = = = = = = = = = = = = = = = = = = 

Answer 1

This was a bitch of a bug to blat

I ended up having to use one of my 2 ITS helpline incidents, and lost a full working week on it.

Setting the uberView's backgroundColor property to ANYTHING non-nil fixes the problem.

This is one of the things that gets done by XIB magic

There is a tool called nib2objc that converts XIB into code. this would have been the next step if I had to debug it myself, to actually see what is contained in Apple's default XIB, and see what I'm failing to implement manually.

But this is a BUG in UIKit. Apple's ITS rep told me to file it does such, which I have done.

Answer 2

I had the same problem, but using [UIColor clearColor] for the superview's background did not help. (This is on iOS 4.3.3)

All the superviews need to have an opaque color set.

Answer 3

I do confirm that adding

self.window.backgroundColor = [UIColor whiteColor];

in didFinishLaunchingWithOptions function works perfectly.