iPad上的空白UIDatePicker处于模式UIDatePickerModeDateAndTime [英] blank UIDatePicker on iPad in mode UIDatePickerModeDateAndTime

问题描述

我正在努力使用iPad上的UIDatePicker。 setDate或.date赋值使DatePicker为空：

I am struggling with the UIDatePicker on iPad. The setDate or .date assignment makes the DatePicker empty:

    UIDatePicker * dtVCpicker = [[UIDatePicker alloc] initWithFrame:CGRectZero]; 
    dtVCpicker.datePickerMode = UIDatePickerModeDateAndTime;
    dtVCpicker.date = [NSDate date];
    dtVCpicker.minimumDate = [NSDate date];
[self.view.window addSubview:dtVCpicker];

如果我将模式更改为UIDatePickerModeDate或UIDatePickerModeTime则看起来很正常。

if I change the mode to UIDatePickerModeDate or UIDatePickerModeTime then it would look normal.

非常感谢您的回答！

推荐答案

我为此问题实施了解决方法：在viewDidLoad中设置dtVCpicker.date使得Picker可显示。

I implemented the work-around for this issue: setting the dtVCpicker.date inside the viewDidLoad made the Picker displayable.

在我现有的代码中，我刚刚在Popup中添加了选择器，因此当Popup显示时没有调用viewDidLoad。所以我创建了一个包含选择器的视图，并将视图放在Popup中（并将setDate放在viewDidLoad中）。它有效。

In my existing code, I just added the picker inside a Popup, and so viewDidLoad wasn't called when the Popup displays. So I created a view that contains the picker, and put the view inside the Popup (and put the setDate in the viewDidLoad). It works.

这篇关于iPad上的空白UIDatePicker处于模式UIDatePickerModeDateAndTime的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！