Question

我尝试在操作表中添加日期选择器，同时给出另一个按钮

看起来像图像

enter image description here

我可以抽出选择器的时间

但那个小的完成按钮不起作用......

我甚至无法触摸它。

这是我的代码，不是太多......

我无法理解为什么按钮不起作用？

- (IBAction)selectDate:(id)sender{
menu = [[UIActionSheet alloc] initWithTitle:@"Select Date"
                                                  delegate:self
                                         cancelButtonTitle:nil
                                    destructiveButtonTitle:nil
                                         otherButtonTitles:nil];
[menu setActionSheetStyle:UIActionSheetStyleBlackTranslucent];

startPickerView = [[UIDatePicker alloc] init];
startPickerView.datePickerMode = UIDatePickerModeTime;
[menu sendSubviewToBack:startPickerView];
[menu showInView:self.view];        
[menu setBounds:CGRectMake(0,0,320,460)];
CGRect pickerRect = startPickerView.bounds;
pickerRect.origin.y = -60;
startPickerView.bounds = pickerRect;
[startPickerView addTarget:self action:@selector(timeChange:) forControlEvents:UIControlEventValueChanged];

UISegmentedControl *closeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Done"]];
closeButton.momentary = YES; 
closeButton.frame = CGRectMake(260, 7.0f, 50.0f, 30.0f);
closeButton.segmentedControlStyle = UISegmentedControlStyleBar;
closeButton.tintColor = [UIColor blackColor];
[closeButton addTarget:self action:@selector(dismissActionSheet:) forControlEvents:UIControlEventTouchUpInside];

[menu addSubview:startPickerView];

[menu addSubview:closeButton];
[closeButton release];  
[menu release];
[startPickerView release];

}

非常感谢任何回复〜

韦伯

Answer 1

在使用下面的代码之前，我做过类似的事情。在这里，我创建了一个日期选择器视图，并添加到一个带有两个按钮的操作表：工具栏中的“完成”和“取消”。

- (IBAction)selectDate:(id)sender{   
UIActionSheet *pickerViewPopup = [[UIActionSheet alloc] init];

   const CGFloat toolbarHeight = 44.0f;

    UIDatePicker *pickerView = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, toolbarHeight, 0, 0)];
    pickerView.datePickerMode = UIDatePickerModeDate;
    pickerView.hidden = NO;
    pickerView.date = [NSDate date];

    UIToolbar *pickerToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, toolbarHeight)];
    pickerToolbar.barStyle = UIBarStyleBlackOpaque;
    [pickerToolbar sizeToFit];

    NSMutableArray *barItems = [[NSMutableArray alloc] init];

    UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
    [barItems addObject:flexSpace];

    UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(doneButtonPressed:)];
    [barItems addObject:doneBtn];

    UIBarButtonItem *cancelBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(cancelButtonPressed:)];
    [barItems addObject:cancelBtn];

    [pickerToolbar setItems:barItems animated:YES];

    [pickerViewPopup addSubview:pickerToolbar];
    [pickerViewPopup addSubview:pickerView];
    [pickerViewPopup showInView:self.view];
    [pickerViewPopup setBounds:CGRectMake(0,0,self.view.frame.size.width, 464)];
}

使用此处的示例可在以下位置找到：http://www.buggyprogrammer.co.uk/2010/08/18/open-uipickerview-when-user-enters-textfield/

Answer 2

我认为您使用UIActionSheet的方式是您的问题的根源：UIActionSheet监听工作表上按钮上的事件..以及您使用它的方式，您使用自己的组件覆盖它。

我个人会创建一个自定义的UIView并显示，而不是将DatePicker和Done按钮放在UIActionSheet的顶部。

为什么操作表中的按钮不起作用？

2 个答案: