为什么“self.canDisplayBannerAds = YES;” iOS 8上的应用程序崩溃？

Question

我想指出self是一个WelcomeViewController，它继承自UIViewController：

WelcomeViewController.h

#import <UIKit/UIKit.h>

@interface WelcomeViewController : UIViewController
@property (strong, nonatomic) NSString* score;
@property (strong, nonatomic) NSUserDefaults* preferences;


@end

WelcomeViewController.m

#import "WelcomeViewController.h"
#import "GESceneController.h"
#import <iAd/iAd.h>
@interface WelcomeViewController ()
@property (weak, nonatomic) IBOutlet UILabel *scoreLabel;
@property (weak, nonatomic) IBOutlet UILabel *highScoreLabel;

@end

@implementation WelcomeViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.canDisplayBannerAds = YES;
    [self.scoreLabel setText:self.score];

    NSString* highScoreText = [NSString stringWithFormat:@"Meilleur score : %ld",
                               [self.preferences integerForKey:@"highscore"]];

    [self.highScoreLabel setText:highScoreText];

    // Do any additional setup after loading the view.
}

我收到错误：[WelcomeViewController setCanDisplayBannerAds：]：无法识别的选择器发送到实例0x7d97f080

Answer 1

您是否已将iAd文件导入链接的框架和库？如果没有，转到您的构建信息并一直滚动到底部，在那里您将找到“链接的框架......”并将框架添加到您的应用程序中。