1呛占、修改導(dǎo)航欄字體顏色
self.title = @"title";
[self.navigationController.navigationBar setTitleTextAttributes:
@{NSFontAttributeName:[UIFont systemFontOfSize:12],
NSForegroundColorAttributeName:[UIColor redColor]}];
2创橄、修改導(dǎo)航欄背景顏色顏色
self.navigationController.navigationBar.barTintColor = [UIColor whiteColor];
