navigationbar颜色和字体颜色的设置

self.navigationController.navigationBar.translucent = NO;//    Bar的模糊效果，默认为YES
self.navigationController.navigationBar.barTintColor =[UIColor colorWithRed:36/255.0 green:41/255.0 blue:55/255.0 alpha:1];

<span style="font-size:10px;">NSDictionary *attributes=[NSDictionary dictionaryWithObjectsAndKeys:[UIColor whiteColor],NSForegroundColorAttributeName,nil];
[self.navigationController.navigationBar setTitleTextAttributes:attributes];</span>

<span style="font-size:10px;">UILabel *lb =[[UILabel alloc]initWithFrame:CGRectMake(10, 4, 60, 40)];
lb.text =@"哈哈哈哈";
self.navigationItem.titleView =lb;</span>

//设置NavigationBar背景颜色
[[UINavigationBar appearance] setBarTintColor:[UIColor redColor]];
//@{}代表Dictionary
[[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName:[UIColor whiteColor]}];