“GADUNativeCustomTemplateAd”错误没有可见的@interface

Question

我得到的错误是：

“GADUNativeCustomTemplateAd”没有可见的@interface 声明选择器“performClickOnAssetWithKeycustomClickHandler:clickHandler:”

谁能帮我解决这个问题？

.m 文件

// Copyright 2014 Google Inc. All Rights Reserved.

#import "GADUNativeCustomTemplateAd.h"

@implementation GADUNativeCustomTemplateAd

 - (instancetype)initWithAd:(GADNativeCustomTemplateAd *)nativeCustomTemplateAd {
  self = [super init];
  if (self) {
    _nativeCustomTemplateAd = nativeCustomTemplateAd;
  }
   return self;
}

- (NSString *)templateID {
  return [self.nativeCustomTemplateAd templateID];
}

- (NSString *)stringForKey:(NSString *)key {
  return [self.nativeCustomTemplateAd stringForKey:key];
}

- (UIImage *)imageForKey:(NSString *)key {
  return [self.nativeCustomTemplateAd imageForKey:key].images;
}

- (void)performClickOnAssetWithKey:(NSString *)key withCustomClickAction:(bool)customClickAction {
  dispatch_block_t clickHandler = nil;
  if (customClickAction) {
    clickHandler = ^{
      [self didReceiveClickForAsset:key];
    };
  }
  [self.nativeCustomTemplateAd performClickOnAssetWithKey:key customClickHandler:clickHandler];
}

- (void)didReceiveClickForAsset:(NSString *)key {
  if (self.didReceiveClickCallback) {
    self.didReceiveClickCallback(self.nativeCustomTemplateClient,
                                 [key cStringUsingEncoding:NSUTF8StringEncoding]);
  }
}

- (void)recordImpression {
  [self.nativeCustomTemplateAd recordImpression];
}

- (NSArray *)availableAssetKeys {
  return [self.nativeCustomTemplateAd availableAssetKeys];
}

@end

.h 文件

// Copyright 2014 Google Inc. All Rights Reserved.

@import Foundation;
@import GoogleMobileAds;

#import "GADUTypes.h"

@interface GADUNativeCustomTemplateAd : NSObject

/// A reference to the Unity native custom template ad client.
@property(nonatomic, assign) GADUTypeNativeCustomTemplateAdClientRef *nativeCustomTemplateClient;

/// A GADNativeCustomTemplateAd which loads native ads.
@property(nonatomic, strong) GADUNativeCustomTemplateAd *nativeCustomTemplateAd;

/// Initializes a GADUNativeCustomTemplateAd.
- (instancetype)initWithAd:(GADNativeCustomTemplateAd *)nativeCustomTemplateAd;

/// The ad clicked callback into Unity.
@property(nonatomic, assign)
GADUNativeCustomTemplateDidReceiveClickCallback didReceiveClickCallback;

/// The custom template ID for the ad.
- (NSString *)templateID;

/// Returns the string corresponding to the specified key.
- (NSString *)stringForKey:(NSString *)key;

/// Returns the native ad image corresponding to the specified key.
- (UIImage *)imageForKey:(NSString *)key;

/// Call when the user clicks on the ad.
- (void)performClickOnAssetWithKey:(NSString *)key withCustomClickAction:(bool)clickAction;

/// Call when the ad is displayed on screen to the user.
- (void)recordImpression;

/// An array of available asset keys.
- (NSArray *)availableAssetKeys;

@end

Answer 1

在您的 header 文件中，尝试更改 nativeCustomTemplateAd 属性声明：

@property(nonatomic, strong) GADUNativeCustomTemplateAd *nativeCustomTemplateAd;

到这里：

@property(nonatomic, strong) GADNativeCustomTemplateAd *nativeCustomTemplateAd;

...您可能只是在类名中有一个愚蠢的拼写错误。

Answer 2

您需要在 .h 文件中定义 performClickOnAssetWithKey:customClickHandler: int。并在这个文件中实现这个方法。

Answer 3

您的 GADUNativeCustomTemplateAd.h 文件和 GADUNativeCustomTemplateAd.m 文件中都需要一个 @interface/@end 部分。

在 m 文件中，它应该在 #import 之后和 @implementation 之前，看起来像

@interface GADUNativeCustomTemplateAd()
// private properties of your GADUNativeCustomTemplateAd class
@end

在h文件中应该是这样的：

@interface GADUNativeCustomTemplateAd : UIViewController
{  
}
// public properties of your GADUNativeCustomTemplateAd class
@end

如果 GADUNativeCustomTemplateAd 不是从 UIViewController 派生的，您应该使用它派生的任何类。