iPhone:DatePicker dd/mm/yyyy - iphone

Question

I am using a DatePicker with popups when a user click a textField. However, the Picker displays Month first, not date first and it isn't British way to write a date.
Is there any way to set the date format in DatePicker to British way such as dd/mm/yyyy?
I am using an 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

The UIDatePicker, by default, uses whatever [NSLocale currentLocale] dictates.
The locale property on UIDatePicker was deprecated in iOS 5, but I believe that you could do the following:
NSCalendar *cal = [NSCalendar currentCalendar];
cal.locale = [[NSLocale alloc] initWithLocaleIdentifier:#"en_GB"];
myDatePicker.calendar = cal;
This should work. If it doesn't, please file a bug and I'll fix it. :)

Answer 2

The UIDatePicker is made to adapt to the user's settings. Changing its format using the locale: method was possible but is now deprecated in iOS 5.0.
You can view your format in the settings of your iPhone :
Settings > General > International > Region Format
If you want a specific format, consider making your own picker but it is very discouraged for a date picker.

Answer 3

When writing the month in text the british probably would put the month first (or at least it would be acceptable).
But to answer your question I'm not aware of a way to change the display format of the date picker, but you could make you're own using a UIPickerView with a custom delegate and data source.