ios - 如何防止 DatePicker 滚动到过去的日期？

Question

我有一个看起来像这样的 DatePicker:

我从 DatePicker 的选定日期开始设置通知，很明显我不需要过去的日期，我该如何隐藏它们？我尝试了一些我在其他问题中发现但没有用的东西，看起来像这样:

[super viewDidLoad];
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
    NSDate *currentDate = [NSDate date];
    NSDateComponents *comps = [[NSDateComponents alloc] init];
    NSDate *minDate = [calendar dateByAddingComponents:comps toDate:currentDate options:0];
    [self.DatePicker setMinimumDate:minDate];

谢谢!!

Answer 1

试试这个

[picker setMinimumDate: [NSDate date]];

或者试试这段代码

 NSCalendar *calendar = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
 NSDate *currentDate = [NSDate date];
 NSDateComponents *comps = [[[NSDateComponents alloc] init] autorelease];
 [comps setYear:30];
 NSDate *maxDate = [calendar dateByAddingComponents:comps toDate:currentDate options:0];
 [comps setYear:-30];
 NSDate *minDate = [calendar dateByAddingComponents:comps toDate:currentDate options:0];

 [datePicker setMaximumDate:maxDate];
 [datePicker setMinimumDate:minDate];

希望它对你有用。