iOS UIDatePicker 未显示在 UIActionSheet 中

Question

我是 iOS 新手，第一次使用这个 DatePicker。我正在尝试在 UIActionSheet 中显示日期选择器。我从其他 StackOver 流程​​主题中获得了这段代码

- (void)showDatePicker:(UITapGestureRecognizer *)recognizer {
    NSLog(@"label touched");
    UIActionSheet *menu = [[UIActionSheet alloc] initWithTitle:@"Date Picker"
                                                      delegate:self
                                             cancelButtonTitle:@"Cancel"
                                        destructiveButtonTitle:nil
                                             otherButtonTitles:@"OK",nil];
    // Add the picker
    UIDatePicker *pickerView = [[UIDatePicker alloc] init];
    pickerView.datePickerMode = UIDatePickerModeTime;
    [menu addSubview:pickerView];
    [menu showInView:self.view];
    
    CGRect menuRect = menu.frame;
    CGFloat orgHeight = menuRect.size.height;
    menuRect.origin.y -= 214; //height of picker
    menuRect.size.height = orgHeight+214;
    menu.frame = menuRect;
    
    
    CGRect pickerRect = pickerView.frame;
    pickerRect.origin.y = orgHeight;
    pickerView.frame = pickerRect;
    
    //[pickerView release];
    //[menu release];
}

但 DatePicker 没有显示。这就是我得到的。

我在这里做错了什么？

Answer 1

根据苹果文档

Important: UIActionSheet is deprecated in iOS 8. (Note that UIActionSheetDelegate is also deprecated.) To create and manage action sheets in iOS 8 and later, instead use UIAlertController with a preferredStyle of UIAlertControllerStyleActionSheet.

或者您可以将 datePicker 作为 inputView 添加到文本字段。 (只需使用 UITextfield 而不是 UIButton 打开选择器)

UIDatePicker *datepicker = [[UIDatePicker alloc] initWithFrame:CGRectZero];
[datepicker setDatePickerMode:UIDatePickerModeDate];
myTextField.inputView = datepicker;