centering UILabel in UINavigationBar - iphone

Question

I have a UINavigationBar and have the leftBarButtonItem and rightBarButtonItem set. The leftbar is set as:
UIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom];
[backButton setImage:[UIImage imageNamed:#"back.png"] forState:UIControlStateNormal];
UIBarButtonItem *myButton = [[[UIBarButtonItem alloc] initWithCustomView:backButton] autorelease];
self.navigationItem.leftBarButtonItem = myButton;
and the rightbarbutton is set as:
UIButton *doneBtn = [UIButton buttonWithType:UIButtonTypeCustom];
UIImage *doneButtonImage = nil;
doneButtonImage = [UIImage imageNamed:#"done.png"];
[doneBtn setImage:doneButtonImage forState:UIControlStateNormal];
doneBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:doneBtn];
self.navigationItem.rightBarButtonItem = doneBarButtonItem;
the width of back is 23px and done is 72px, so they're not equal. Now the issue is I have a label that I want to be in the center all the time.. and I want to clip the text if the text in the label is too long that it interferes with the right bar button. here's how I set it up:
titleLabel = [[UILabel alloc] initWithFrame:CGRectZero];
titleLabel.text = self.pageTitle; // Can't change
titleLabel.adjustsFontSizeToFitWidth = YES;
titleLabel.clipsToBounds = YES;
titleLabel.numberOfLines = 1;
titleLabel.font = [UIFont fontWithName:#"PTSans-Narrow" size:30.0];
titleLabel.textColor = [UIColor colorWithWhite:0.6 alpha:1.0];
titleLabel.backgroundColor = [UIColor yellowColor];
titleLabel.autoresizingMask = UIViewAutoresizingFlexibleHeight;
titleLabel.textAlignment = UITextAlignmentCenter;
[titleLabel sizeToFit];
titleLabel.frameHeight = self.navigationController.navigationBar.frameHeight;
self.navigationItem.titleView = titleLabel;
However this doesn't center the title.. How can I do so?

Answer 1

I suggest first count the width of self.pageTitle
then accordingly set the position of titleLabel.I prefer this:-
titleLabel = [[UILabel alloc] init];
titleLabel.text = self.pageTitle; // Can't change
**CGSize maximumTitleLabelSize = CGSizeMake(200,40);//Set maximum width that an self.pageTitle can have.
CGSize expectedLabelSize = [titleLabel.text titleLabel.font
constrainedToSize:maximumTitleLabelSize
lineBreakMode:UILineBreakModeWordWrap];
//adjust the label the the new width.
CGRect newFrame = titleLabel.frame;
newFrame.size.width = expectedLabelSize.width;
titleLabel.size.width = newFrame.size.width;**
if(titleLabel.size.width==100)
{
titleLabel.frame = cgRectMake(85,5,titleLabel.size.width,30);
}
else if(titleLabel.size.width==200)
{
titleLabel.frame = cgRectMake(36,5,titleLabel.size.width,30);
}
titleLabel.adjustsFontSizeToFitWidth = YES;
titleLabel.clipsToBounds = YES;
titleLabel.numberOfLines = 1;
titleLabel.font = [UIFont fontWithName:#"PTSans-Narrow" size:30.0];
titleLabel.textColor = [UIColor colorWithWhite:0.6 alpha:1.0];
titleLabel.backgroundColor = [UIColor yellowColor];
titleLabel.autoresizingMask = UIViewAutoresizingFlexibleHeight;
titleLabel.textAlignment = UITextAlignmentCenter;
[titleLabel sizeToFit];
titleLabel.frameHeight = self.navigationController.navigationBar.frameHeight;
self.navigationItem.titleView = titleLabel;
Try this.It will help you.Thanks :)

Answer 2

This is the simplest solution, use the sizeToFit method before adding it to the titleView:
UILabel *titleLabel = [[UILabel alloc] init];
titleLabel.text = #"My Title";
titleLabel.font = [UIFont boldSystemFontOfSize:17.0f];
titleLabel.textColor = [UIColor whiteColor];
[titleLabel sizeToFit];
self.navigationItem.titleView = titleLabel;

Answer 3

Don't use NavigationItem to add left and right bar button, instead use addsubview method to add custom buttons for navigation bar.

Answer 4

Use a tool bar to add multiple buttons to ur navigation bar.
// create a toolbar to have two buttons in the right
UIToolbar* tools = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 133, 44.01)];
// create the array to hold the buttons, which then gets added to the toolbar
NSMutableArray* buttons = [[NSMutableArray alloc] initWithCapacity:3];
// create a standard "add" button
UIBarButtonItem* bi = [[UIBarButtonItem alloc]`enter code here`
initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:NULL];
bi.style = UIBarButtonItemStyleBordered;
[buttons addObject:bi];
[bi release];
// create a spacer
bi = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
[buttons addObject:bi];
[bi release];
// create a standard "refresh" button
bi = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:#selector(refresh:)];
bi.style = UIBarButtonItemStyleBordered;
[buttons addObject:bi];
[bi release];
// stick the buttons in the toolbar
[tools setItems:buttons animated:NO];
[buttons release];
// and put the toolbar in the nav bar
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:tools];
[tools release];

Answer 5

you just use this code its work fine try it
UILabel *titleLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 5, 190, 30)];
titleLabel.textColor = [UIColor whiteColor];
titleLabel.textAlignment = UITextAlignmentCenter;
titleLabel.text =#"My Wish List";
titleLabel.backgroundColor = [UIColor clearColor];
titleLabel.font = [UIFont fontWithName:#"Copperplate" size:16.0];
titleLabel.minimumFontSize = 10;
titleLabel.autoresizingMask=UIViewAutoresizingFlexibleWidth;
self.navigationItem.titleView = titleLabel;
[titleLabel release];
i use this code in my project also.......
:-)