ios - 无法使用 NSUserDefaults 保存整数

Question

基本上，我试图做到这一点，以便在我重新启动应用程序时保存用户的分数，目前，在关闭并重新打开应用程序时，分数恢复为零。我在互联网上寻找了很多解决方案，但一无所获。这是我的代码 (ViewController.m):

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

int bytes;
int highScore;

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    highScore = bytes;

    [[NSUserDefaults standardUserDefaults] setObject:[NSNumber numberWithInt:highScore] forKey:@"HighScore"];
    [[NSUserDefaults standardUserDefaults] synchronize];


    // Snippet used to get your highscore from the prefs.
    highScore = [[[NSUserDefaults standardUserDefaults] objectForKey:@"HighScore"] intValue ];
}

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

- (IBAction)addBytes:(id)sender {
    highScore = [[[NSUserDefaults standardUserDefaults] objectForKey:@"HighScore"] intValue ];
    highScore++;
    [[NSUserDefaults standardUserDefaults] setObject:[NSNumber numberWithInt:highScore] forKey:@"HighScore"];
    [_byteCounter setText:[NSString stringWithFormat:@"%d", highScore]];

}

@end

Answer 1

你可以使用这段代码，我希望它能为你工作:

[[NSUserDefaults standardUserDefaults] setInteger:HighScore forKey:@"HighScore"];