無法爲標籤

Question

在控制器設置文本我有標籤屬性：

@interface BallsViewController : UIViewController <UIInteraction> 
@property (weak, nonatomic) IBOutlet UILabel *ScoreLabel; 

-(void)UpdateScore:(int)score; 
@end 

@interface BallsViewController() 
@end 

@implementation BallsViewController 
@synthesize ScoreLabel; 
- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 

} 

- (void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 

-(void)UpdateScore:(int)score 
{ 
    NSString *scoreStr =[NSString stringWithFormat:@"%d",score]; 
    [self.ScoreLabel setText:scoreStr]; 
    [self.InfoLabel setText:scoreStr]; 

} 

@end 

UpdateScore是協議的方法。當我想設置文本到ScoreLabel它有價值：ScoreLabel UILabel * 0x00000000

這意味着它不是初始化？

當我設置文本，在UI上它不會改變。

Answer 1

嘗試將您的標籤設置爲強。

@property (strong, nonatomic) IBOutlet UILabel *ScoreLabel;