设置导航条标题的颜色

效果图：

代码：

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.

   self.title=@"I love you";

   //改变导航条标题的颜色为红色
   [self.navigationController.navigationBar setTitleTextAttributes:@{NSForegroundColorAttributeName : [UIColor redColor]}];
}