如何记住并加载UIDatePicker中的选定日期? [英] How to remember and load selected date in UIDatePicker?
问题描述
我有一个 UIDatePicker
,那么你可以选择一个日期(而不是时间)。然后我保存这个 NSDate
,并将其显示在不同视图的标签中。但是,当我使用 UIDatePicker
加载视图时,如果用户已经选择了日期,我希望它显示所选的日期(使用 NSDefaultPrefs
)。我如何做到这一点?
I have a UIDatePicker
that well, allows you to select a date (not time). I then save this NSDate
and use display it in a label on a different view. However, when I load back the view with the UIDatePicker
, if the user has already selected a date, I want it to show that selected date (using NSDefaultPrefs
). How do I do this?
我知道如何做一个正常的 UIPickerView
,但它如何工作如果是日期?
I know how to do it for a normal UIPickerView
, but how does it work if it is a date?
谢谢。
推荐答案
并恢复您想要的日期(在 DB
, NSDefaults
等)。一旦你有日期,你想设置它,你只需调用 - [UIDatePicker setDate:animated:]
,所以这样的东西:
You save and restore the date however you want (in a DB
, NSDefaults
, etc). Once you have the date you want to set it to you just call -[UIDatePicker setDate:animated:]
, so something like this:
- (void)viewDidLoad {
[super viewDidLoad];
[datePicker setDate:myDate animated:NO];
}
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