如何在iOS的UIDatePicker中屏蔽日期 [英] How to block days in UIDatePicker for iOS

问题描述

我在我的IOS应用程序中使用了日期选择器，我想知道是否有可能阻止某些日子。例如，我需要阻止一年中的所有星期一，这是可能吗？

谢谢。

解决方案

你可以做的只是添加一个自定义的UIPickerView，如注释中所述，或者实现一个方法，调用事件 UIControlEventValueChanged 描述了 here

然后检查一个有效的工作日的新值。您可以通过以下方式获得工作日：

  NSCalendar * calendar = [NSCalendar currentCalendar]; 
 NSDateComponents * components = [日历组件：NSWeekdayCalendarUnit fromDate：[NSDate date]]; 
 return [components weekday]; // 1 =星期日，2 =星期一... 
  

没有办法隐藏几天在滚轮中。

I'm using a Date picker on my IOS app, and I want to know if is possible to block some days. For example, I need to block all mondays from a year, is this possible?

Thanks.

解决方案

The only thing you can do is add a custom UIPickerView as described in the comments or implement a method that is called for the event UIControlEventValueChanged as described here

then check the new value for a valid weekday. you can get the weekday with:

NSCalendar* calendar = [NSCalendar currentCalendar];
NSDateComponents* components = [calendar components:NSWeekdayCalendarUnit fromDate:[NSDate date]];
return [components weekday]; // 1 = Sunday, 2 = Monday, ...

There is no way to hide some days in the scrollwheel.

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