在該頁面添加
-(void)navigationController:(UINavigationController*)navigationController didShowViewController:(UIViewController*)viewController animated:(BOOL)animated{
? ? UINavigationBar*navigationBar = navigationController.navigationBar;
? ? [navigationBarsetBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
? ? navigationBar.tintColor= [UIColorwhiteColor];
? ? [[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName:[UIColor whiteColor]}];
}
