UI导航栏(UINavigation)相关属性left\rightButton,导航栏title,系统时间颜色的设置

    //nav里两边按钮的颜色为白色    [self.navigationController.navigationBar setTintColor:[UIColor whiteColor]];    //让导航栏颜色变白    self.navigationController.navigationBar.barStyle = UIBarStyleBlackOpaque;    //让系统时间变白    [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];