AdMob Mediation Banner

首先將AdMob和TAMedia SDK整合至專案中，AdMob SDK可以在這裡下載 https://developers.google.com/mobile-ads-sdk/download?#downloadios。
接著在AdMob Mediation新增Custom Event（https://mediation.admob.com）。
新增Custom Event的詳細說明可以參考https://developers.google.com/mobile-ads-sdk/docs/admob/mediation#ios。
最後，在專案中加入與Custom Event對應的Class，其中Custom Event的Class Name需要和新增的Class Name保持一致，例如Custom Event的Class Name是TADCustomView，則新增的Class Name也必須為TADCustomView。

Mediation View Controller

// MediationViewController.h

// 使用 GADBannerView 物件來介接 TADBannerView
@property (nonatomic, strong) GADBannerView *_adBanner;

// MediationViewController.m

- (void)viewWillDisappear:(BOOL)animated {
    // MediationViewController 的 view 消失前, 將 _adBanner 及其 delegate 設為 nil
    if (_adBanner != nil) {
        _adBanner.delegate = nil;
        _adBanner = nil;
    }
}

Custom Banner View

// TADCustomBanner.h

// 匯入 TAMedia SDK 定義
#import "TADBannerView.h"

// 匯入 Admob SDK 定義
#import "GADCustomEventBanner.h"

@interface TADCustomBanner : NSObject<GADCustomEventBanner, TADBannerViewDelegate>
{
    // 以 instant variable 的方式, 宣告 bannerView 物件
    TADBannerView *_bannerView;
}

@property (nonatomic, weak) id<GADCustomEventBannerDelegate> delegate;

@end

#import "TADCustomBanner.h"

@implementation TADCustomBanner

@synthesize delegate = _delegate;

- (void)requestBannerAd:(GADAdSize)adSize
              parameter:(NSString *)serverParameter
                  label:(NSString *)serverLabel
                request:(GADCustomEventRequest *)customEventRequest  {
    
    // 將 GADCustomEventRequest 物件裡的資訊轉入 TADRequest 物件
    TADRequest *tadRequest = [TADRequest request];
    tadRequest.testing = customEventRequest.isTesting;
    tadRequest.gender = (TADGender)customEventRequest.userGender;
    tadRequest.birthday = customEventRequest.userBirthday;
    [tadRequest setLocationWithLatitude:customEventRequest.userLatitude longitude:customEventRequest.userLongitude accuracy:customEventRequest.userLocationAccuracyInMeters];
    
    // bannerView 物件初始化
    if (_bannerView == nil) {
        // 若是你使用admob smart banner, 請記得要使用size常數
        // 因為 smart banner 沒有既定 size 
        // e.g. 
        // _bannerView = [[TADBannerView alloc] initWithAdSize:kTADAdSizeBanner];
        // 
        _bannerView = [[TADBannerView alloc] initWithAdSize:TADAdSizeFromCGSize(adSize.size)];
    }
    
    // 必須要設定delegate
    _bannerView.delegate = self;
    
    // serverParameter 為 AD Unit ID, 在 Admob 裡設定
    _bannerView.adUnitID = serverParameter;
    
    // 載入廣告
    [_bannerView loadRequest:tadRequest];
}

#pragma mark -
#pragma mark - TADBannerViewDelegate

- (void)adViewDidReceiveAd:(TADBannerView *)view {
    NSLog(@"CustomBanner - adViewDidReceiveAd!!");
    [_delegate customEventBanner:self didReceiveAd:view];
}

- (void)adView:(TADBannerView *)view didFailToReceiveAdWithError:(NSError *)error {
    NSLog(@"CustomBanner - didFailToReceiveAdWithError!! error: %@", error);
    [_delegate customEventBanner:self didFailAd:error];
}

- (void)adViewWillPresentScreen:(TADBannerView *)adView {
    NSLog(@"CustomBanner - adViewWillPresentScreen!!");
    [_delegate customEventBannerWillPresentModal:self];
}

- (void)adViewWillDismissScreen:(TADBannerView *)adView {
    NSLog(@"CustomBanner - adViewWillDismissScreen!!");
    [_delegate customEventBannerWillDismissModal:self];
}

- (void)adViewDidDismissScreen:(TADBannerView *)adView {
    NSLog(@"CustomBanner - adViewDidDismissScreen!!");
    [_delegate customEventBannerDidDismissModal:self];
}

- (void)adViewWillLeaveApplication:(TADBannerView *)adView {
    NSLog(@"CustomBanner - adViewWillLeaveApplication!!");
    [_delegate customEventBannerWillLeaveApplication:self];
}

- (void)dealloc {
    NSLog(@"CustomBanner - dealloc!!");
    // Custom物件消失前, 要將 bannerView 及其 delegate 設為 nil
    if (_bannerView != nil) {
        _bannerView.delegate = nil;
        _bannerView = nil;
    }
}

@end

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