Centering UINavigationBar title text issue

Question

In my UINavigationBar I have a multi line title, I am using the following the code to setup:

UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 480, 50)];
label.backgroundColor = [UIColor clearColor];
label.numberOfLines = 2;
label.font = [UIFont boldSystemFontOfSize: 15.0f];
label.shadowColor = [UIColor colorWithWhite:0.0 alpha:0.5];
label.textAlignment = NSTextAlignmentCenter;
label.textColor = [UIColor whiteColor];
label.text = @"Headloss due to Friction              (Hazen Williams Eq.)";

self.navigationItem.titleView = label;

Since this is on a sub-view it has a "Back" button, added by the UINavigationController . So I figured that by adding the label.textAlignment = NSTextAlignmentCenter; my title would be centered, but it's actually centering my title from the end of my "Back" button to the end of my screen.

How can I override this so that my title is actually centered based on my screen dimension, (basically, the way it would be by default should the back button not be present).

Answer 1

Good question that's pretty tough. If I find a more elegant solution I'll edit my answer but this is what I came up with:

UIView *spaceView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 30, 20)];

UIBarButtonItem *space = [[UIBarButtonItem alloc] initWithCustomView:spaceView];
self.navigationItem.rightBarButtonItems = [NSArray arrayWithObject:space];

And just adjust the width of the UIView for how far you want your titleLabel to move.