在viewWillDisappear上删除AdBannerView并将其添加回viewWillAppear是一个好习惯吗？

Question

我目前在代码中执行以下操作,避免出现"模糊"广告问题.但这是一个好习惯吗？一个潜在的问题是 - 假设在viewWillDis出现之前,有广告请求被发送出去,然后当广告回来时,adBannerView实例已经消失.这会是一个大问题吗？我应该只改为hideAdBanner吗？

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

    // create the ad banner view
    [self createAdBannerView];

    if (adBannerView != nil) {
       UIInterfaceOrientation orientation = self.interfaceOrientation;
       [self changeBannerOrientation:orientation];
    }
} 

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

    // iAd
    if (adBannerView != nil) {
        [self hideAdBanner];
        adBannerView.delegate = nil;
        [adBannerView release];
        adBannerView = nil;
    }
} 

Answer 1

我使用单例作为广告横幅,并在每个ViewDidLoad上将其调用到视图中.这会自动将其从上一个视图中删除.

这适用于adWhirl,但您应该能够将其用于iAD.

adWhirlSingleton.h

#import <Foundation/Foundation.h>
#import "AdWhirlDelegateProtocol.h"
#import "AdWhirlView.h"

@interface adWhirlSingleton : NSObject <AdWhirlDelegate> {
    AdWhirlView *awView;
    UIViewController *displayVC;

}

@property (strong, nonatomic) AdWhirlView *awView;
@property (strong, nonatomic) UIViewController *displayVC;
+(id)sharedAdSingleton;
-(void)adjustAdSize:(CGFloat)x:(CGFloat)y;

@end

adWhirlSingleton.m

#import "adWhirlSingleton.h"

@implementation adWhirlSingleton
static adWhirlSingleton* _sharedAdSingleton = nil;
@synthesize awView, displayVC;

+(id)sharedAdSingleton
{
    @synchronized(self)
    {
        if(!_sharedAdSingleton)
            _sharedAdSingleton = [[self alloc] init];
        return _sharedAdSingleton;
    }
    return nil;
}

+(id)alloc
{
    @synchronized([adWhirlSingleton class])
    {
        NSAssert(_sharedAdSingleton == nil, @"Attempted to allocate a second instance of a singleton.");
                 _sharedAdSingleton = [super alloc];
                 return _sharedAdSingleton;
    }

    return nil;
}

-(id)init
{
    self = [super init];
    if (self != nil) {
        // initialize stuff here
        self.awView = [AdWhirlView requestAdWhirlViewWithDelegate:self];
    }
    return self;
}

-(void)dealloc
{
    displayVC = nil;
    if (awView) {
        [awView removeFromSuperview]; //Remove ad view from superview
        [awView replaceBannerViewWith:nil];
        [awView ignoreNewAdRequests]; // Tell adwhirl to stop requesting ads
        [awView setDelegate:nil];
        awView = nil;
    }
}

-(void)adjustAdSize:(CGFloat)x :(CGFloat)y
{
    [UIView beginAnimations:@"AdResize" context:nil];
    [UIView setAnimationDuration:0.7];
    awView.frame = CGRectMake(x, y, kAdWhirlViewWidth, kAdWhirlViewHeight);
    [UIView commitAnimations];
    NSLog(@"Recent Network Name: %@",[awView mostRecentNetworkName]);
}

-(BOOL)adWhirlTestMode
{
    return YES;
}

-(NSString *)adWhirlApplicationKey
{
    return @"xxxxxxxxxxxxx";
}

-(UIViewController *)viewControllerForPresentingModalView
{
    return displayVC;
}

-(void)adWhirlDidReceiveAd:(AdWhirlView *)adWhirlView
{
    NSLog(@"%s",__FUNCTION__);
    NSLog(@"Recent Network Name: %@",[awView mostRecentNetworkName]);
    //[self adjustAdSize];
}

-(void)adWhirlDidFailToReceiveAd:(AdWhirlView *)adWhirlView usingBackup:(BOOL)yesOrNo
{
    NSLog(@"%s",__FUNCTION__);
}

@end

然后将adWhirlSingleton导入到每个ViewController中,并在每个viewWillAppear中执行此操作:

adWhirlSingleton *adWhirlSingle = [adWhirlSingleton sharedAdSingleton];
        adWhirlSingle.displayVC = self;
        [adWhirlSingle adjustAdSize:0 :self.view.frame.size.height -50];
        [self.view addSubview:adWhirlSingle.awView];
        [self.view bringSubviewToFront:adWhirlSingle.awView];
        NSLog(@"Ad Banner View");

但我使用UITableView的视图,我用这个:

adWhirlSingleton *adWhirlSingle = [adWhirlSingleton sharedAdSingleton];
    adWhirlSingle.displayVC = self;
    [adWhirlSingle adjustAdSize:0 :self.tabBarController.view.frame.size.height -99];
    [self.tabBarController.view addSubview:adWhirlSingle.awView];
    NSLog(@"Should have added Ad!");

希望对你有所帮助