保存高分不适用于我

Question

我试图保存高分，我有5个高分的文本框，我想要在他们遭到殴打时更换它们，显然。但对我来说，它总是进入if语句：if ([hs.text floatValue] == 0)，它只是取代了第一个高分区文本框，无论我运行多少次。我究竟做错了什么？

- (void)viewDidLoad 
    { 
     [super viewDidLoad]; 
     highscore = [[NSUserDefaults standardUserDefaults] floatForKey: @"highScore"]; 
     highscore1 = [[NSUserDefaults standardUserDefaults] floatForKey: @"highScore1"]; 
     highscore2 = [[NSUserDefaults standardUserDefaults] floatForKey: @"highScore2"]; 
     highscore3 = [[NSUserDefaults standardUserDefaults] floatForKey: @"highScore3"]; 
     highscore4 = [[NSUserDefaults standardUserDefaults] floatForKey: @"highScore4"]; 

    if ([hs.text floatValue] == 0) { 
     hs.text = [NSString stringWithFormat:@"%.4f",finTime]; 
    } 
    else if ([hs1.text floatValue] == 0) { 
     hs1.text = [NSString stringWithFormat:@"%.4f",finTime];   
    } 
    else if ([hs2.text floatValue] == 0) { 
     hs2.text = [NSString stringWithFormat:@"%.4f",finTime]; 
    } 
    else if ([hs3.text floatValue] == 0) { 
     hs3.text = [NSString stringWithFormat:@"%.4f",finTime]; 
    } 
    else if ([hs4.text floatValue] == 0) { 
     hs4.text = [NSString stringWithFormat:@"%.4f",finTime]; 
    } 
    else if (finTime < highscore) { 
     hs4.text = hs3.text; 
     hs3.text = hs2.text; 
     hs2.text = hs1.text; 
     hs1.text = hs.text; 
     hs.text = [NSString stringWithFormat:@"%.4f",finTime]; 
    } 
    else if (finTime < highscore1) { 
     hs4.text = hs3.text; 
     hs3.text = hs2.text; 
     hs2.text = hs1.text; 
    } 
    else if (finTime < highscore2) { 
     hs4.text = hs3.text; 
     hs3.text = hs2.text; 
     hs2.text = [NSString stringWithFormat:@"%.4f",finTime]; 
    } 
    else if (finTime < highscore3) { 
     hs4.text = hs3.text; 
     hs3.text = [NSString stringWithFormat:@"%.4f",finTime]; 
    } 
    else if (finTime < highscore4) { 
     hs4.text = [NSString stringWithFormat:@"%.4f",finTime]; 
    } 
    [self saveScore]; 
} 

-(void) saveScore 
{ 
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 
    [defaults setFloat:finTime forKey:@"highScore"]; 
    [defaults setFloat:finTime forKey:@"highScore1"]; 
    [defaults setFloat:finTime forKey:@"highScore2"]; 
    [defaults setFloat:finTime forKey:@"highScore3"]; 
    [defaults setFloat:finTime forKey:@"highScore4"]; 

    [[NSUserDefaults standardUserDefaults] synchronize]; 

} 

Answer 1

的问题是，hs.text将不会被设置（或者，如果你做的是，在厦门国际银行/故事板将被设置为0）时viewDidLoad被调用。因此，它总是进入第一个if语句，并且不使用存储在NSUserDefaults中的值。

我建议设置文本字段如下：

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    highscore = [[NSUserDefaults standardUserDefaults] floatForKey: @"highScore"]; 
    highscore1 = [[NSUserDefaults standardUserDefaults] floatForKey: @"highScore1"]; 
    highscore2 = [[NSUserDefaults standardUserDefaults] floatForKey: @"highScore2"]; 
    highscore3 = [[NSUserDefaults standardUserDefaults] floatForKey: @"highScore3"]; 
    highscore4 = [[NSUserDefaults standardUserDefaults] floatForKey: @"highScore4"]; 

    if (highscore) 
    hs.text = [NSString stringWithFormat:@"%.4f", highscore]; 
    if (highscore1) 
    hs1.text = [NSString stringWithFormat:@"%.4f", highscore1]; 
    if (highscore2) 
    hs2.text = [NSString stringWithFormat:@"%.4f", highscore2]; 
    if (highscore3) 
    hs3.text = [NSString stringWithFormat:@"%.4f", highscore3]; 
    if (highscore4) 
    hs4.text = [NSString stringWithFormat:@"%.4f", highscore4]; 

    ... 

另外，我不认为saveScore方法是否工作正常，因为它会将所有的高分，以finTime。您可能希望将它们设置为来自每个hs文本字段的浮点值。