小编jme*_*do3的帖子

好的,这就是计划.我从中获取数据的XML允许电话号码字段中的非数字文本(用于描述或联系人姓名等).我试图只提取数字并用它们调用tel:URL来发起呼叫.这是什么不工作:

NSCharacterSet *charset = [[NSCharacterSet decimalDigitCharacterSet] invertedSet];
NSString *number = @"(555) 555-5555 Office";
NSString *strippedNumber = [number stringByTrimmingCharactersInSet:charset];
NSString *phoneURL = [NSString stringWithFormat:@"tel:%@", strippedNumber];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:phoneURL]];

如果有任何明显的拼写错误,他们只是错别字.:)

有人在另一个问题中发布了这个代码,将UIDatePicker放在UIAlertSheet中:

UIActionSheet *menu = [[UIActionSheet alloc] initWithTitle:@"Date Picker" 
                                                  delegate:self
                                         cancelButtonTitle:@"Cancel"
                                    destructiveButtonTitle:nil
                                         otherButtonTitles:nil];

// Add the picker
UIDatePicker *pickerView = [[UIDatePicker alloc] init];
pickerView.datePickerMode = UIDatePickerModeDate;
[menu addSubview:pickerView];
[menu showInView:self.view];        
[menu setBounds:CGRectMake(0,0,320, 500)];

CGRect pickerRect = pickerView.bounds;
pickerRect.origin.y = -100;
pickerView.bounds = pickerRect;

[pickerView release];
[menu release];

我已将其修改为:

    UIActionSheet *menu = [[UIActionSheet alloc] initWithTitle:nil
                                                      delegate:nil
                                             cancelButtonTitle:@"Done"
                                        destructiveButtonTitle:nil
                                             otherButtonTitles:nil];

    // Add the picker
    UIDatePicker *pickerView = [[UIDatePicker alloc] init];
    pickerView.datePickerMode = UIDatePickerModeCountDownTimer;
    [menu addSubview:pickerView];
    [menu showInView:self.navigationController.tabBarController.view];        
    [menu setBounds:CGRectMake(0,0,320, 516)];
    [pickerView setFrame:CGRectMake(0, 85, …

嘿伙计们,就像问题所说,我试图在不使用presentModalViewController或pushViewController的情况下在UIDatePicker中滑动,然后隐藏应用程序的主UITabBar.现在,我将UIDatePicker子视图与导航栏上的几个按钮添加到临时UIViewController,并使用该临时控制器作为根初始化UINavigationController.我将此导航控制器作为子视图添加到self.navigationController.tabBarController以尝试覆盖UITabBar,但是当我将UITabBar设置为隐藏时,我看到的只有白色,没有UIDatePicker可见.有什么建议？

注意:我的理由是我无法想出一种方法来使用带有小于屏幕的视图的presentModalViewController.