Question

我已使用此代码更改NavigationItem的标题：

self.navigationItem.title = @"My Name is ABC";

如何更改字体大小和字体？

Answer 1

示例代码：

CGRect frame = CGRectMake(0, 0, 400, 44);
UILabel *label = [[[UILabel alloc] initWithFrame:frame] autorelease];
label.backgroundColor = [UIColor clearColor];
label.font = [UIFont boldSystemFontOfSize:8.0];
label.textAlignment = UITextAlignmentCenter;
label.textColor = [UIColor whiteColor];
label.text = @"Sample custom Title With small Fonts ";
self.navigationItem.titleView = label;

Answer 2

从iOS5 +开始，你可以使用UIAppearance protocol更改导航标题的字体，这里是代码：

NSMutableDictionary *titleBarAttributes = [NSMutableDictionary dictionaryWithDictionary: [[UINavigationBar appearance] titleTextAttributes]];
[titleBarAttributes setValue:[UIFont fontWithName:@"Helvetica-Bold" size:18] forKey:UITextAttributeFont];
[[UINavigationBar appearance] setTitleTextAttributes:titleBarAttributes];

Answer 3

从iOS5开始，您可以使用新的titleTextAttributes属性，如下所示：

NSMutableDictionary *newAttributes = [[NSMutableDictionary alloc] init]; 
[newAttributes setObject:[UIFont boldSystemFontOfSize:18] forKey:UITextAttributeFont];
[self.navigationController.navigationBar setTitleTextAttributes:newAttributes];

可能的关键是：

UITextAttributeFont
UITextAttributeTextColor
UITextAttributeTextShadowColor
UITextAttributeTextShadowOffset

Answer 4

要使上面的示例居中，你必须使文字的大小只与文字一样宽，这应该可以做到这一点

UIFont * font = [UIFont fontWithName:@"Helvetica" size:18.0f];
CGRect frame = CGRectMake(0, 0, [@"Lorem Ipsum" sizeWithFont:font].width, 44);

Answer 5

从iOS5开始，您可以在一行中执行此操作：

[[UINavigationBar appearance] setTitleTextAttributes: @{UITextAttributeFont: [UIFont fontWithName:@"Helvetica" size:20.0f]}];

Answer 6

Swift 4

在AppDelegate.swift

中

UIBarButtonItem.appearance().setTitleTextAttributes([NSAttributedStringKey.font: UIFont(name: "Helvetica-Bold", size: 15)!], for: .normal)

Answer 7

这是现代Swift 2解决方案：

let customFont = UIFont(name: "Helvetica", size: 17)
UINavigationBar.appearance().titleTextAttributes = [NSFontAttributeName : customFont!]

Answer 8

我已经找到了一些很好的答案。我认为这与接受的答案类似，但请更详细地找到答案。

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {  

   self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];    

   if (self){
     // this will appear as the title in the navigation bar    
     UILabel *label = [[[UILabel alloc] initWithFrame:CGRectZero] autorelease];      
    label.backgroundColor = [UIColor clearColor];         
    label.font = [UIFont boldSystemFontOfSize:20.0];       
    label.shadowColor = [UIColor colorWithWhite:0.0 alpha:0.5];       
    label.textAlignment = UITextAlignmentCenter;      
    label.textColor = [UIColor yellowColor]; // change this color      
    self.navigationItem.titleView = label;          
    label.text = NSLocalizedString(@"PageThreeTitle", @"");       
    [label sizeToFit];    
 }    
 return self;

}

有关详细信息，请参阅此Link

Answer 9

对于swift 3

self.navigationController?.navigationBar.titleTextAttributes = [NSFontAttributeName :UIfont(named:"test") ]

Answer 10

//通过应用程序设置导航标题字体的外观...

let customFont = UIFont(name: "Helvetica-Bold", size: 15)
UINavigationBar.appearance().titleTextAttributes = [NSAttributedStringKey.font : customFont!]

更改NavigationItem的字体

10 个答案: