iOS7 和带有时间选择器的 UIActionSheet

Question

我有一个 iOS6 应用程序，它使用以下代码创建带有时间选择器的 UIActionSheet:

- (void)willPresentActionSheet:(UIActionSheet *)actionSheet
{
    pickerView = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 40, 320, 216)];

    //Configure picker...
    [pickerView setMinuteInterval:5];
    [pickerView setTag: 4];
    [pickerView setDatePickerMode:UIDatePickerModeTime];

    //Add picker to action sheet
    [actionSheet addSubview:pickerView];

    //Gets an array of all of the subviews of our actionSheet
    NSArray *subviews = [actionSheet subviews];

    [[subviews objectAtIndex:1] setFrame:CGRectMake(20, 266, 280, 46)];
    [[subviews objectAtIndex:2] setFrame:CGRectMake(20, 317, 280, 46)];
}

在我在 iOS7 中尝试之前，它就像一个魅力，当我单击弹出操作表的输入字段时它总是崩溃。这是输入字段后面的代码:

- (void)textFieldDidBeginEditing:(UITextField *)textField
{
    selectedTag = textField.tag;

    // the input field that needs to show the actionsheet has tag 1.
    if (selectedTag == 1) {
        UIActionSheet *asheet = [[UIActionSheet alloc] initWithTitle:@"Select a time:" 
        delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil 
        otherButtonTitles:@"Select", nil];

        [asheet showInView:[self.view superview]];
        [asheet setFrame:CGRectMake(0, 110, 320, 500)];

        textField.userInteractionEnabled = NO;
    }
    textField.userInteractionEnabled = YES;
}

当应用程序崩溃时，我收到以下消息:

Answer 1

如果您希望在单击文本字段时显示日期选择器，您可以直接显示日期选择器。将日期选择器作为文本字段的输入 View 。

    pickerView = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 40, 320, 216)];

    //Configure picker...
    [pickerView setMinuteInterval:5];
    [pickerView setDatePickerMode:UIDatePickerModeTime];
    [dateTextField setInputView:pickerView];