Make UINavigationBar title be user editable - iphone

Question

How do I make UINavigationBar title to be user editable, I've tried setting the titleView to be a textfield however it doesn't look the same.. It's missing that outline or drop shadow. I'm aiming for it to look like the default one.
This is what i'm implementing at the moment:
_titleField = [[UITextField alloc]initWithFrame:CGRectMake(0, 0, 200, 26)];
[_titleField setDelegate:self];
_titleField.text = _bugDoc.data.title;
_titleField.font = [UIFont boldSystemFontOfSize:20];
_titleField.textColor = [UIColor whiteColor];
_titleField.textAlignment = NSTextAlignmentCenter;
self.navigationItem.titleView = _titleField;

Answer 1

- (void)viewDidLoad
{
[super viewDidLoad];
[self loadTitle];
}
- (void)loadTitle
{
txtField_navTitle = [[UITextField alloc] initWithFrame:CGRectMake(self.view.bounds.origin.x,7,self.view.bounds.size.width,31)];
txtField_navTitle.delegate = self;
[txtField_navTitle setBackgroundColor:[UIColor clearColor]];
txtField_navTitle.textColor = [UIColor whiteColor];
txtField_navTitle.textAlignment = UITextAlignmentCenter;
txtField_navTitle.borderStyle = UITextBorderStyleNone;
txtField_navTitle.font = [UIFont boldSystemFontOfSize:20];
txtField_navTitle.autocorrectionType = UITextAutocorrectionTypeNo;
txtField_navTitle.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
[self.navigationItem setTitleView:txtField_navTitle];
txtField_navTitle.layer.masksToBounds = NO;
txtField_navTitle.layer.shadowColor = [UIColor whiteColor].CGColor;
txtField_navTitle.layer.shadowOpacity = 0;
[txtField_navTitle release];
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
self.title = textField.text;
return YES;
}
Please dont forget to #import <QuartzCore/QuartzCore.h>

Answer 2

Try this way this works for me.
// Custom Navigation Title.
UILabel* tlabel=[[UILabel alloc] initWithFrame:CGRectMake(0,0, 300, 40)];
tlabel.text=self.title;
tlabel.textAlignment=NSTextAlignmentCenter;
tlabel.font = [UIFont boldSystemFontOfSize:17.0];
tlabel.textColor=[UIColor colorWithRed:7.0/255.0 green:26.0/255.0 blue:66.0/255.0 alpha:1.0];
tlabel.backgroundColor =[UIColor clearColor];
tlabel.adjustsFontSizeToFitWidth=YES;
self.navigationItem.titleView=tlabel;