使用StoryBoard在iPad上的Popover显示UIDatePicker

我已经实现了在popover中显示日期选择器，按照中的显示进行编程UIPopover中的UIDatePicker 。

I have achieved to show the datepicker inside the popover, doing it programmatically as it is shown in UIDatePicker in UIPopover.

但我一直在尝试在界面生成器中执行此操作，我已经创建了一个名为DatePickerViewController.m的视图控制器，其中包含一个DatePicker及其相应的IBoulet

But I have been trying to do it in interface Builder, I already made a View Controller named DatePickerViewController.m with a DatePicker in it and its corresponding IBoulet

#import <UIKit/UIKit.h>

@interface DatePickerViewController : UIViewController
@property (strong, nonatomic) IBOutlet UIDatePicker *birthdayDatePicker;

@end

然后我需要这个在生日时弹出窗口正在编辑文本字段。所以我使用以下代码

Then I need this to be shown in a popover when the Birthday text field is being edited. so I use the following code

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{
    //Assign DatePicker to Birthday TextField
    //build our custom popover view
    DatePickerViewController* popoverContent = [[DatePickerViewController alloc] init];
    //resize the popover view shown
    //in the current view to the view's size
    popoverContent.contentSizeForViewInPopover = CGSizeMake(320, 216);

    // dismiss existing popover
    if (self.popoverControllerBirthday)
    {
        [self.popoverControllerBirthday dismissPopoverAnimated:NO];
        self.popoverControllerBirthday = nil;
    }

    //create a popover controller with my DatePickerViewController in it
    UIPopoverController *popoverControllerForDate = [[UIPopoverController alloc] initWithContentViewController:popoverContent];
    //Set the delegate to self to receive the data of the Datepicker in the popover
    popoverControllerForDate.delegate = self;
    //Adjust the popover Frame to appear where I want
    CGRect myFrame =textField.frame;
    myFrame.origin.x = 260;
    myFrame.origin.y = 320;

    //Present the popover
    [popoverControllerForDate presentPopoverFromRect:myFrame 
                                          inView:self.view 
                        permittedArrowDirections:UIPopoverArrowDirectionDown 
                                        animated:YES];
    self.popoverControllerBirthday = popoverControllerForDate;
    return NO; // tells the textfield not to start its own editing process (ie show the keyboard)

}

我还在我当前的ViewController中导入自定义DatePickerViewController

And I also import the custom DatePickerViewController in my current ViewController

#import "DatePickerViewController.h"

但它没有在popover中显示datepicker。

But it is not showing the datepicker inside the popover.

有人知道会发生什么吗？

Does anybody know what could be happening?