iAd横幅错误“iAd实例太多”

Question

我在我的一个视图控制器上有一个广告横幅视图，作为我的游戏的指导页面。当视图控制器被多次加载时，我收到以下错误。

WARNING: More than 10 instances of ADBannerView or ADInterstitialView currently exist. This is a misuse of the iAd API, and ad performance will suffer as a result. This message is printed only once.

我已经在stackoverflow上搜索了这个错误，阅读了响应，但没有对我起作用。我已经读到，你的意思是释放广告横幅，然后没有它等，我有，仍然收到这个错误。我的"viewWillAppear“和"viewWillDissapear”的代码如下。任何帮助都将不胜感激！

-(void) viewWillAppear:(BOOL)animated {

[super viewWillAppear:animated];

_adBanner = [[ADBannerView alloc] initWithFrame:CGRectMake(0, self.view.frame.size.height, 320, 50)];
_adBanner.delegate = self;
[self.view addSubview:_adBanner];

}

-(void) viewWillDisappear:(BOOL)animated {

[super viewWillDisappear:animated];

if (_adBanner != nil) {
    _adBanner.delegate = nil;
    _adBanner.hidden = YES;
    [_adBanner release];
    _adBanner = nil;

}

}

Answer 1

在将iAd设置为nil之前，请尝试将其从其superview中删除：

-(void) viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];

    if (_adBanner != nil) {
        [_adBanner removeFromSuperview]; // <-new line

        _adBanner.delegate = nil;
        _adBanner.hidden = YES;
        [_adBanner release];
        _adBanner = nil;
}

Answer 2

以下是我已经在我的应用程序中使用的iAd代码，没有问题：

implementation ViewController
{
    ADBannerView *adView;
    BOOL bannerIsVisible;
}

- (void)viewDidLoad
{
    [super viewDidLoad];


    adView = [[ADBannerView alloc] initWithFrame:CGRectZero];
    adView.frame = CGRectOffset(adView.frame, 0, -50);
    adView.requiredContentSizeIdentifiers = [NSSet setWithObject:ADBannerContentSizeIdentifier320x50];
    adView.currentContentSizeIdentifier = ADBannerContentSizeIdentifier320x50;
    [self.view addSubview:adView];
    adView.delegate=self;
    bannerIsVisible=NO;
}

- (void)bannerViewDidLoadAd:(ADBannerView *)banner
{
    if (!bannerIsVisible)
    {
        [UIView beginAnimations:@"animateAdBannerOn" context:NULL];
        // banner is invisible now and moved out of the screen on 50 px
        banner.frame = CGRectOffset(banner.frame, 0, 50);
        [UIView commitAnimations];
        bannerIsVisible = YES;
    }
}

- (void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error
{
    if (bannerIsVisible)
    {
        [UIView beginAnimations:@"animateAdBannerOff" context:NULL];
        // banner is visible and we move it out of the screen, due to connection issue
        banner.frame = CGRectOffset(banner.frame, 0, -50);
        [UIView commitAnimations];
        bannerIsVisible = NO;
    }
}

Answer 3

不是在单个类中初始化adBannerView，而是在AppDelegate中创建它。

我放了：

@property (strong, nonatomic) ADBannerView *adBanner;

在我的AppDelegate.h中：

self.adBanner = [[ADBannerView alloc] init];

在我的AppDelegate.m

然后在单个类中，我添加了：

@property (strong, nonatomic) ADBannerView *adBanner;

在.h和.m中，我放入：

{
    BOOL _bannerIsVisible;
}

就在@interface下面，在@implementation中我放了：

#pragma mark Ads




- (WTMAppDelegate *) appdelegate {
    return (WTMAppDelegate *)[[UIApplication sharedApplication] delegate];
}

- (void)bannerViewDidLoadAd:(ADBannerView *)banner
{
    NSLog(@"Retreieved Ad");
    [self bringBannerBack];

}

- (void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error
{
    NSLog(@"Failed to retrieve ad");

    [self moveBannerViewOffScreen];
}

- (void)bringBannerBack
{



    [self.adBanner setAlpha:1];
    [self.adBanner setNeedsDisplay];
    [UIView beginAnimations:@"MoveView" context:nil];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
    [UIView setAnimationDuration:0.1];
    self.adBanner.frame = CGRectMake(0, self.view.bounds.size.height - 50, 320, 50);
    [UIView commitAnimations];
    _bannerIsVisible = YES;
    [self.adBanner setAlpha:1];

}
//Move the banner off the screen.
- (void)moveBannerViewOffScreen
{

    [self.adBanner setAlpha:0];
    [self.adBanner setNeedsDisplay];
    _bannerIsVisible = NO;

}

在viewWillAppear和ViewWillDisappear中：

- (void) viewWillDisappear:(BOOL)animated{


    self.adBanner.delegate=nil;
    self.adBanner=nil;
    [self.adBanner removeFromSuperview];


}


- (void) viewWillAppear:(BOOL)animated
{
    self.adBanner = [[self appdelegate] adBanner];
    self.adBanner.delegate = self;
    [self.view addSubview:self.adBanner];

    if (self.adBanner.bannerLoaded == NO){
        NSLog(@"NO initial banner loaded");
        [self moveBannerViewOffScreen];
    } else {
        NSLog(@"Initial ad loaded");
        [self bringBannerBack];
    }

}