小编aca*_*rot的帖子

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