自定义导航栏样式

-(void)setupAppAppearance
{
    [[UILabel appearance] setFont:[UIFont fontWithName:@"FZLTHK—GBK1-0" size:20]];
    [UIButton appearance].titleLabel.font =[UIFont fontWithName:@"FZLTHK—GBK1-0" size:20];
    
    [[UINavigationBar appearance] setBarTintColor:[UIColor blueColor]];
    [[UINavigationBar appearance] setTintColor:[UIColor grayColor]];
    [UINavigationBar appearance].titleTextAttributes = [NSDictionary dictionaryWithObject:[UIColor grayColor] forKey:@"NSForegroundColorAttributeName"];
    
    [UITabBar appearance].barTintColor = [UIColor blueColor];
    [UITabBar appearance].tintColor = [UIColor grayColor];
    [UITabBar appearance].selectionIndicatorImage = [UIImage imageNamed:@"icon"];
}