I have created an AddressBook kind of application where I display a list of people in a UITableView, when a person is selected an ABUnknownPersonViewController is pushed. From this ABUnknownPersonViewController the user is able (by using the built in functionality) to either add the person to a "New Contact" or "Existing Contact".
This is where my problem is located. I am using a Custom UILabel for the NavigationBar title throughout my application. And I need to be able to do this for the views that are pushed by "Add New Contact" / "Add to Existing Contact" as well.
I solved this for the "Add New Contact" by creating a category for ABNewPersonViewController, but the same approach doesn't work for the "Add to Existing Contac开发者_JS百科t". I guess this might be due to the fact that is it an ABPersonPickerNavigationController that is pushed.
@implementation ABPeoplePickerNavigationController (customTitle)
-(void)viewDidLoad {
[super viewDidLoad];
self.navigationBar.tintColor = [UIColor colorWithRed:102/255.0 green:102/255.0 blue:102/255.0 alpha:1];
}
The change of color for the NavigationBar's tintColor works fine, but I cant find a proper way to access the title. Help that include a working example where you are able to change the title in a ABPeoplePickerNavigationController that is pushed from a ABUnknownPersonViewController would be much appriciated.
This is how the category for ABNewPersonViewController (that works) looks like:
@implementation ABNewPersonViewController (customTitle)
-(void)viewDidLoad {
[super viewDidLoad];
self.navigationController.navigationBar.tintColor = [UIColor colorWithRed:102/255.0 green:102/255.0 blue:102/255.0 alpha:1];
}
-(void)setTitle:(NSString *)theTitle {
CGRect frame = CGRectMake(0, 0, 45, 45);
UILabel *label = [[[UILabel alloc] initWithFrame:frame] autorelease];
label.backgroundColor = [UIColor clearColor];
label.font = [UIFont systemFontOfSize:20.0];
label.shadowColor = [UIColor colorWithWhite:255.0 alpha:1];
label.shadowOffset = CGSizeMake(1, 1);
label.textAlignment = UITextAlignmentCenter;
label.textColor = [UIColor colorWithRed:23/255.0 green:23/255.0 blue:23/255.0 alpha:1];
self.navigationItem.titleView = label;
label.text = theTitle;
[label sizeToFit];
}
@end
I use custom labels for this purpose. You can also change font size with this code.
Example:
UILabel * label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 320, 320 / 11)];
label.font = 16.0;
label.textColor = [UIColor blackColor];
label.shadowColor = [UIColor colorWithWhite:0.0 alpha:0.5];
label.backgroundColor = [UIColor clearColor];
label.textAlignment = UITextAlignmentCenter;
label.text = @"Your title";
self.navigationItem.titleView = label;
[label release];
Hope this helps.
精彩评论