像这样使用定向支持

UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0,0,320,40)];
[view setBackgroundColor:[UIColor clearColor]];
[view setAutoresizingMask:UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight ];

UILabel *nameLabel = [[UILabel alloc] init];
[nameLabel setFrame:CGRectMake(0, 0, 320, 40)];
[nameLabel setBackgroundColor:[UIColor clearColor]];
[nameLabel setAutoresizingMask:UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin |UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleLeftMargin];
[nameLabel setTextColor:[UIColor whiteColor]];
[nameLabel setFont:[UIFont boldSystemFontOfSize:17]];
[nameLabel setText:titleString];
[nameLabel setTextAlignment:UITextAlignmentCenter];
[view addSubview:nameLabel];
[nameLabel release];
self.navigationItem.titleView = view;
[view release];

像这样使用定向支持

UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0,0,320,40)];
[view setBackgroundColor:[UIColor clearColor]];
[view setAutoresizingMask:UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight ];

UILabel *nameLabel = [[UILabel alloc] init];
[nameLabel setFrame:CGRectMake(0, 0, 320, 40)];
[nameLabel setBackgroundColor:[UIColor clearColor]];
[nameLabel setAutoresizingMask:UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin |UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleLeftMargin];
[nameLabel setTextColor:[UIColor whiteColor]];
[nameLabel setFont:[UIFont boldSystemFontOfSize:17]];
[nameLabel setText:titleString];
[nameLabel setTextAlignment:UITextAlignmentCenter];
[view addSubview:nameLabel];
[nameLabel release];
self.navigationItem.titleView = view;
[view release];

Swift 4和4.2版本:

 self.navigationController.navigationBar.titleTextAttributes = [NSAttributedString.Key.foregroundColor: UIColor.green]

我知道这是一个相当老的话题，但我认为这对新用户来说是有用的，iOS 5带来了一个新的属性来建立标题属性。

你可以使用UINavigationBar的setTitleTextAttributes来设置字体、颜色、偏移量和阴影颜色。

此外，你可以为整个应用程序中的所有UINavigationBars设置相同的默认UINavigationBar的标题文本属性。

例如:

NSDictionary *navbarTitleTextAttributes = [NSDictionary dictionaryWithObjectsAndKeys:
                                            [UIColor whiteColor],UITextAttributeTextColor, 
                                            [UIColor blackColor], UITextAttributeTextShadowColor, 
                                            [NSValue valueWithUIOffset:UIOffsetMake(-1, 0)], UITextAttributeTextShadowOffset, nil];

[[UINavigationBar appearance] setTitleTextAttributes:navbarTitleTextAttributes];

亚历克斯·R·R的最新消息。的帖子使用新的iOS 7文本属性和现代objective c减少噪音:

NSShadow *titleShadow = [[NSShadow alloc] init];
titleShadow.shadowColor = [UIColor blackColor];
titleShadow.shadowOffset = CGSizeMake(-1, 0);
NSDictionary *navbarTitleTextAttributes = @{NSForegroundColorAttributeName:[UIColor whiteColor],
                                            NSShadowAttributeName:titleShadow};

[[UINavigationBar appearance] setTitleTextAttributes:navbarTitleTextAttributes];

斯威夫特版本

我发现你们大多数人都给出了Objective_C版本的答案

我想通过使用Swift为任何需要它的人实现这个功能。

在ViewDidload

1.要使导航栏背景变成颜色(例如:蓝色)

self.navigationController?.navigationBar.barTintColor = UIColor.blueColor()

2.要使导航栏背景变成图像(例如:ABC.png)

let barMetrix = UIBarMetrics(rawValue: 0)!

self.navigationController?.navigationBar
      .setBackgroundImage(UIImage(named: "ABC"), forBarMetrics: barMetrix)

3.更改导航栏标题(例如:[字体:Futura,10][颜色:红色])

navigationController?.navigationBar.titleTextAttributes = [
            NSForegroundColorAttributeName : UIColor.redColor(),
            NSFontAttributeName : UIFont(name: "Futura", size: 10)!
        ]

(提示1:不要忘记UIFont后面的“!”标记) (hint2:有很多属性的标题文本，命令点击 在“NSFontAttributeName”中，你可以进入类并查看keyNames 和他们需要的对象类型)

希望我能帮上忙!: D