带时间选择器的iOS7和UIActionSheet

Question

我有一个iOS6应用程序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iOS7中尝试它之前它就像一个魅力，当我点击弹出动作表的输入字段时，它总是崩溃。以下是输入字段背后的代码：

- (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，则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视图。

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

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

Answer 2

试试这个..

[asheet showInView:self.view];