iPhone:DatePicker dd/mm/yyyy

Question

当用户单击textField时,我正在使用带有弹出窗口的DatePicker.但是,Picker首先显示Month,而不是首先显示日期,并且不是英国人写日期的方式.有没有办法将DatePicker中的日期格式设置为英国方式,如dd/mm/yyyy？我正在使用Achtionsheet:

-(IBAction)acsheet:(id)sender
{

    actionSheet = [[UIActionSheet alloc] initWithTitle:nil 
                                              delegate:nil
                                     cancelButtonTitle:nil
                                destructiveButtonTitle:nil
                                     otherButtonTitles:nil];
    [actionSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];

    //CGRect pickerFrame = CGRectMake(0, 45, 0, 0);
    pickerView1 = [[UIDatePicker alloc] init];
    pickerView1.datePickerMode = UIDatePickerModeDate;  

    [actionSheet addSubview:pickerView1];

    UISegmentedControl *closeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Close"]];
    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:UIControlEventValueChanged];
    [actionSheet addSubview:closeButton];
    [actionSheet showInView:[[UIApplication sharedApplication] keyWindow]];    
    [actionSheet setBounds:CGRectMake(0, 0, 320, 485)];

    [pickerView1 addTarget:self
                    action:@selector(updateLabel:)
          forControlEvents:UIControlEventValueChanged]; 

    UIBarButtonItem *spacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
    UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self  action:@selector(dismissDatePicker:)] ;
    UIToolbar *toolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, self.view.bounds.size.height, 320, 44)];
    toolBar.tag = 11;
    toolBar.barStyle = UIBarStyleBlackTranslucent;

    [toolBar setItems:[NSArray arrayWithObjects:spacer, doneButton, nil]];
    [self.view addSubview:toolBar];

}

Answer 1

在UIDatePicker默认情况下,使用任何[NSLocale currentLocale]使然.

该locale属性UIDatePicker在iOS 5中已弃用,但我相信您可以执行以下操作:

NSCalendar *cal = [NSCalendar currentCalendar];
cal.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_GB"];
myDatePicker.calendar = cal;

这应该工作.如果没有,请提交一个错误,我会修复它.:)

Answer 2

UIDatePicker用于适应用户的设置.locale:可以使用该方法更改其格式,但现在已在iOS 5.0中弃用.

您可以在iPhone的设置中查看您的格式:

设置>常规>国际>区域格式

如果你想要一个特定的格式,考虑自己做一个选择器,但是对于日期选择器是非常不鼓励的.