ios - 未调用 Facebook Native Ads FBNativeAdsManagerDelegate 实现方法

Question

Facebook 原生广告中的

FBNativeAdsManagerDelegate 在 UIViewController 类中正常工作，但在自定义 NSObject 类中使用时它不起作用，即它的委托(delegate)方法 nativeAdsLoaded 和nativeAdsFailedToLoadWithError 没有被调用。

CustomFBAd.h文件

@import FBAudienceNetwork;

#import <Foundation/Foundation.h>

@protocol OnFBNativeAdLoadedDelegate<NSObject>

- (void)onFBNativeAdLoaded:(UIView *)adView;

@end

@interface CustomFBAd : NSObject

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

-(void)requestNativeAd:(NSString *)FaceBookPlacementID;
@end

CustomFBAd.m 文件

#import "CustomFBAd.h"

@interface CustomFBAd ()<FBNativeAdsManagerDelegate,FBNativeAdDelegate>

@property (nonatomic, strong) FBNativeAdsManager *manager;
@property (nonatomic, weak) FBNativeAdScrollView *scrollView;

@end
@implementation CustomFBAd

-(void)requestNativeAd:(NSString *)FaceBookPlacementID{
    if(FaceBookPlacementID.length != 0){
        FBNativeAdsManager *manager = [[FBNativeAdsManager alloc] initWithPlacementID:FaceBookPlacementID forNumAdsRequested:5];
        manager.delegate = self;
        [FBAdSettings addTestDevice:@"cf1bb93becbe6e31f26fdf7d80d19b4ae225afaa"];
        [manager loadAds];
        self.manager = manager;
    }
}

#pragma mark - FBNativeAdDelegate implementation

- (void)nativeAdDidClick:(FBNativeAd *)nativeAd
{
    //    NSLog(@"Native ad was clicked.");
}

- (void)nativeAdDidFinishHandlingClick:(FBNativeAd *)nativeAd
{
    //    NSLog(@"Native ad did finish click handling.");
}

- (void)nativeAdWillLogImpression:(FBNativeAd *)nativeAd
{
    //    NSLog(@"Native ad impression is being captured.");
}

#pragma mark FBNativeAdsManagerDelegate

-(void)nativeAdDidLoad:(FBNativeAd *)nativeAd
{

}

- (void)nativeAdsLoaded
{
    NSLog(@"Native ads loaded, constructing native UI...");

    if (self.scrollView) {
        [self.scrollView removeFromSuperview];
        self.scrollView = nil;
    }

    FBNativeAdScrollView *scrollView = [[FBNativeAdScrollView alloc] initWithNativeAdsManager:self.manager withType:FBNativeAdViewTypeGenericHeight120];
    scrollView.xInset = 0;
    scrollView.delegate = self;
    self.scrollView = scrollView;

    [self.delegate onFBNativeAdLoaded:self.scrollView];
}

- (void)nativeAdsFailedToLoadWithError:(NSError *)error
{
    NSLog(@"Native ads failed to load with error: %@", error);
}

@end

如上面代码所述，我确实在 requestNativeAd 方法中将 FBNativeAdsManager 的委托(delegate)设置为

manager.delegate = self;

也用作FBNativeAdsManagerDelegate,FBNativeAdDelegate

@interface CustomFBAd ()<FBNativeAdsManagerDelegate,FBNativeAdDelegate>

并将此代码称为

    CustomFBAd *objFBAd = [[CustomFBAd alloc]init];
    objFBAd.delegate = self;
    [objFBAd requestNativeAd:@"my_FB_placement_Id"];

任何线索(注意:如果我在 UIViewController 中使用相同的代码，它也可以工作)？谢谢

Answer 1

在强烈引用 CustomFBAd 之后，它终于可以正常工作了(感谢@MuhammadZohaibEhsan)。所以将 CustomFBAd 初始化为

@property(nonatomic, strong) CustomFBAd * objFBAd;

并改变

    CustomFBAd *objFBAd = [[CustomFBAd alloc]init];
    objFBAd.delegate = self;
    [objFBAd requestNativeAd:@"my_FB_placement_Id"];

到

    self.objFBAd = [[CustomFBAd alloc]init];
    self.objFBAd.delegate = self;
    [self.objFBAd requestNativeAd:@"my_FB_placement_Id"];