ios - 带有 UIDatePicker subview 的 UIActionSheet 有一个小的透视区域

Question

我正在尝试将 UIDatePicker View 放入 UIActionSheet 中。你可以在这里看到我遇到的问题。即使那里没有键盘，您仍然可以透过那个点看到背景。我在下面包含了当用户点击屏幕上的按钮时调用的代码。澄清一下，作为背景的 View Controller 是一个具有自己的导航层次结构的模态视图 Controller 。除了这个问题(这不是那么重要)，但我想将两个选择按钮移到日期选择器下方。有没有简单的方法可以做到这一点？

//How I initialized the action sheet
dateActionSheet = [[UIActionSheet alloc] initWithTitle:@"Choose Date" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Done", nil];

//This code gets called when the user taps a button on the screen
datePicker.datePickerMode = UIDatePickerModeDate;   //UIDatePicker datePicker
[dateActionSheet addSubview:datePicker];        
[dateActionSheet showInView:self.view];

CGRect menuRect = dateActionSheet.frame;
CGFloat orgHeight = menuRect.size.height;
menuRect.origin.y -= 214; //height of picker
menuRect.size.height = orgHeight+214;
dateActionSheet.frame = menuRect;


CGRect pickerRect = datePicker.frame;
pickerRect.origin.y = orgHeight;
datePicker.frame = pickerRect;

Answer 1

来自UIActionSheet class reference :

UIActionSheet is not designed to be subclassed, nor should you add views to its hierarchy.

相反，创建您自己的 View ，或使用第三方库，如 RMDateSelectionViewController .