ios - 如何在 iOS 中进行年龄验证？

Question

已经创建了以下用于年龄验证的函数，但它并没有给我正确的结果。有人知道怎么做吗？

尝试了一些其他代码，但它被贬低了。我的应用目标是 iOS 7 及更高版本。

Selected Date - 13/03/1990 Output

You live since -68 years and -35 days

-(BOOL)validateAge
{
    NSString *birthDate = _txtBirthDate.text;
    NSDate *todayDate = [NSDate date];
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"yyyy-MM-dd"];

    int time = [todayDate timeIntervalSinceDate:[dateFormatter dateFromString:birthDate]];
    int allDays = (((time/60)/60)/24);
    int days = allDays%365;
    int years = (allDays-days)/365;

    NSLog(@"You live since %i years and %i days",years,days);

    if(years>=18)
    {
        return YES;
    }
    else
    {
        return NO;
    }
}

Answer 1

我觉得你的代码很完美!

在我看来问题出在您的 _txtBirthDate.text 格式上。应该是yyyy-MM-dd

我用静态字符串值代替 _txtBirthDate.text 运行您的代码并得到了完美的结果。检查以下代码以供引用。

NSString *birthDate = @"1990/03/15";
NSDate *todayDate = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy/MM/dd"];
int time = [todayDate timeIntervalSinceDate:[dateFormatter dateFromString:birthDate]];

int allDays = (((time/60)/60)/24);
int days = allDays%365;
int years = (allDays-days)/365;

NSLog(@"You live since %i years and %i days",years,days);

输出:

- You live since 25 years and 280 days