AUDoubleTitleView is a view control for displaying a two-line title that consists of a main title and a subtitle in a navigation bar.
Preview

API reference
/**
A titleView for a navigation bar that contains two lines.
*/
@interface AUDoubleTitleView : UIView
/**
* Creates a titleView with a main title and a subtitle.
*
* @param title The main title.
* @param detaileTitle The subtitle.
*
* @return An initialized APTitleView control.
*/
- (UIView *)initWithTitle:(NSString *)title detailTitle:(NSString *)detaileTitle;
/**
* Updates the text of the main title.
*
* @param title The text of the main title.
*
*/
- (void)updateTitle:(NSString *)title;
/**
* Updates the text of the subtitle.
*
* @param detailTitle The text of the subtitle.
*
*/
- (void)updateDetailTitle:(NSString *)detailTitle;
/**
Updates the font of the main title.
@param titleFont The font of the main title.
*/
- (void)updateTitleFont:(UIFont *)titleFont;
/**
* Updates the font of the subtitle.
*
* @param detailTitleFont The font of the subtitle.
*
*/
- (void)updateDetailTitleFont:(UIFont *)detailTitleFont;
@endCode example
self.navigationItem.titleView = [[AUDoubleTitleView alloc] initWithTitle:@"Main Title" detailTitle:@"Subtitle"];该文章对您有帮助吗?