Question

我仍然对objective-c很新，我正在为我的班级做一个结局项目。我想要做的是从NSUserDefaults读取3个高分的数组并在第一个屏幕上显示它们。

这是我的代码

 self.backgroundColor = [SKColor colorWithRed:0.15 green:0.15 blue:0.3 alpha:1.0];

    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    NSArray *highscores = [[NSArray alloc] initWithArray:[defaults arrayForKey:@"highscores"]];

    SKLabelNode *myLabel = [SKLabelNode labelNodeWithFontNamed:@"Chalkduster"];
    myLabel.text = @"High Scores \n 1)%f \n 2)%f \n 3) %f",highscores(0),highscores(1),highscores(2); //error on this line
    myLabel.fontSize = 30;
    myLabel.position = CGPointMake(CGRectGetMidX(self.frame),
                                   CGRectGetMidY(self.frame));

    [self addChild:myLabel];

当我尝试传递高分时，我得到的错误是NSArrays不是函数或功能点

Answer 1

使用此行编辑错误行

myLabel.text = [NSString stringWithFormat:@"High Scores \n 1)%f \n 2)%f \n 3) %f",
[[highscores objectAtIndex:0] floatValue],
[[highscores objectAtIndex:1] floatValue],
[[highscores objectAtIndex:2] floatValue]];

Answer 2

替换行

myLabel.text = @"High Scores \n 1)%f \n 2)%f \n 3) %f",highscores(0),highscores(1),highscores(2);

带

myLabel.text = @"High Scores \n 1)%f \n 2)%f \n 3) %f",[highscores objectAtIndex:0],[highscores objectAtIndex:1],[highscores objectAtIndex:2];

希望这能解决问题。

Answer 3

Try bellow code .......
self.backgroundColor = [SKColor colorWithRed:0.15 green:0.15 blue:0.3 alpha:1.0];

    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    NSArray *highscores = [[NSArray alloc] initWithArray:[defaults arrayForKey:@"highscores"]];

highscores = [highscores sortedArrayUsingComparator:
                            ^NSComparisonResult(id obj1, id obj2) {
                                if ([obj1 intValue] < [obj2 intValue]) {
                                    return NSOrderedAscending;
                                } else if ([obj1 intValue] > [obj2 intValue]) {
                                    return NSOrderedDescending;
                                } else {
                                    return NSOrderedSame;
                                }
                            }];
    SKLabelNode *myLabel = [SKLabelNode labelNodeWithFontNamed:@"Chalkduster"];
    myLabel.text = @"High Scores \n 1)%f \n 2)%f \n 3) %f",highscores(0),highscores(1),highscores(2); //error on this line
    myLabel.fontSize = 30;
    myLabel.position = CGPointMake(CGRectGetMidX(self.frame),
                                   CGRectGetMidY(self.frame));

    [self addChild:myLabel];

显示一系列高分

3 个答案: