iphone - AdBannerView 框架高度始终为零

Question

我正在为 iPhone 开发一个需要支持 iAds 的应用程序。该应用程序有一个包含 html 内容的主视图，当加载 iAd 时，它必须调整主视图的大小，以便广告显示在底部。一切都很好并且工作正常，除了以下事实:当我计算主视图和 iAd 横幅的新矩形时，我总是得到 0 作为横幅框架高度。我将 hardcore 50 作为该值，因为我将仅使用纵向定位，但如果有一天 iAd 高度发生变化，我宁愿使用属性方法。这是我完成所有相关工作的类(class)代码(在 __show 方法中完成的数学运算):

//
//  SAiOSAdPlugin.m
//  Ad Plugin for PhoneGap
//
//  Created by shazron on 10-07-12.
//  Copyright 2010 Shazron Abdullah. All rights reserved.
//

#import "SAiOSAdPlugin.h"

@interface SAiOSAdPlugin(PrivateMethods)

- (void) __prepare:(BOOL)atBottom;
- (void) __showAd:(BOOL)show;

@end


@implementation SAiOSAdPlugin

@synthesize adView;
@synthesize bannerIsVisible, bannerIsInitialized, bannerIsAtBottom;

const int AdHeight = 50;

#pragma mark -
#pragma mark Public Methods

- (void) prepare:(NSMutableArray*)arguments withDict:(NSMutableDictionary*)options
{
    NSUInteger argc = [arguments count];
    if (argc > 1) {
        return;
    }

    NSString* atBottomValue = [arguments objectAtIndex:0];
    [self __prepare:[atBottomValue boolValue]];
}

- (void) showAd:(NSMutableArray*)arguments withDict:(NSMutableDictionary*)options
{
    NSUInteger argc = [arguments count];
    if (argc > 1) {
        return;
    }

    NSString* showValue = [arguments objectAtIndex:0];
    [self __showAd:[showValue boolValue]];
}

#pragma mark -
#pragma mark Private Methods

- (void) __prepare:(BOOL)atBottom
{
    NSLog(@"SAiOSAdPlugin Prepare Ad At Bottom: %d", atBottom);

    Class adBannerViewClass = NSClassFromString(@"ADBannerView");
    if (adBannerViewClass && !self.adView)
    {
        self.adView = [[ADBannerView alloc] initWithFrame:CGRectZero];
        self.adView.requiredContentSizeIdentifiers = [NSSet setWithObjects: ADBannerContentSizeIdentifierPortrait, ADBannerContentSizeIdentifierLandscape, nil];        
        self.adView.delegate = self;
    }

    if (atBottom)
    {
        self.bannerIsAtBottom = YES;
    }

    self.bannerIsVisible = NO;
    self.bannerIsInitialized = YES;
}

- (void) __showAd:(BOOL)show
{
    NSLog(@"SAiOSAdPlugin Show Ad: %d", show);

    if (!self.bannerIsInitialized){
        [self __prepare:NO];
    }

    if (!(NSClassFromString(@"ADBannerView") && self.adView)) { // ad classes not available
        return;
    }

    if (show == self.bannerIsVisible) { // same state, nothing to do
        return;
    }

    CGRect adViewFrame = self.adView.frame;
    CGRect webViewFrame = [super webView].frame;
    CGFloat statusBarHeight = [UIApplication sharedApplication].statusBarFrame.size.height;

    if (self.bannerIsAtBottom) 
    {
        CGRect adViewFrame = self.adView.frame;
        printf("AdView Show: StatusBarHeight: %f, adViewFrameHeight: %f\n", statusBarHeight, adViewFrame.size.height);
        adViewFrame.origin.y = [UIScreen mainScreen].bounds.size.height - statusBarHeight - adViewFrame.size.height;
        printf("AdView origin Y: %f\n", adViewFrame.origin.y);
        self.adView.frame = adViewFrame;
    }   


    if (show)
    {
        if (self.bannerIsAtBottom)
        {
            webViewFrame.size.height -= (adViewFrame.size.height + statusBarHeight);
        }
        else
        {
            webViewFrame.origin.y += adViewFrame.size.height;
            webViewFrame.size.height -= (adViewFrame.size.height + statusBarHeight);
        }

        [UIView beginAnimations:@"blah" context:NULL];
        [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];

        [super webView].frame = webViewFrame;
        [[[super webView] superview] addSubview:self.adView];

        printf("AdView on show: %f, %f\n", self.adView.frame.origin.x, self.adView.frame.origin.y);

        [UIView commitAnimations];

        self.bannerIsVisible = YES;
    }
    else 
    {
        if (self.bannerIsAtBottom)
        {
            webViewFrame.size.height += (adViewFrame.size.height + statusBarHeight);
        }
        else
        {
            webViewFrame.origin.y -= adViewFrame.size.height;
            webViewFrame.size.height += (adViewFrame.size.height + statusBarHeight);
        }

        [UIView beginAnimations:@"blah" context:NULL];
        [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];

        [super webView].frame = webViewFrame;
        [self.adView removeFromSuperview];

        [UIView commitAnimations];

        self.bannerIsVisible = NO;
    }

}

#pragma mark -
#pragma ADBannerViewDelegate

- (void)bannerViewDidLoadAd:(ADBannerView *)banner
{
    Class adBannerViewClass = NSClassFromString(@"ADBannerView");
    if (adBannerViewClass)
    {
        NSString* jsString = 
                @"var e = document.createEvent('Events');"
                "e.initEvent('iAdBannerViewDidLoadAdEvent');"
                "document.dispatchEvent(e);";
        [super writeJavascript:jsString];
    }
}

- (void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error
{
    Class adBannerViewClass = NSClassFromString(@"ADBannerView");
    if (adBannerViewClass)
    {
        NSString* jsString = 
        @"var e = document.createEvent('Events');"
        "e.initEvent('didFailToReceiveAdWithError');"
        "document.dispatchEvent(e);";
        [super writeJavascript:jsString];
    }
}

@end

郑重声明，我正在使用 iOS 4.3 SDK 并在模拟器上对其进行测试。

Answer 1

也许有帮助

“如果您的应用程序需要在运行时使用广告的确切大小，它会调用 sizeFromBannerContentSizeIdentifier: 类方法，传入 ADBannerContentSizeIdentifierLandscape 或 ADBannerContentSizeIdentifierPortrait。”

来源 - http://developer.apple.com/library/ios/#documentation/userexperience/conceptual/iAd_Guide/BannerAdvertisements/BannerAdvertisements.html#//apple_ref/doc/uid/TP40009881-CH3-SW2