1. UIImagePickerController 状态栏始终保持某一种风格.
-(void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated{ [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackOpaque];
}
-(void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController *)viewController animated:(BOOL)animated{
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackOpaque];
}
2:修改 UIImagePickerController 顶部导航栏的颜色风格
保持UIImagePickerController后导航栏风格统一
原文：http://www.cnblogs.com/zhujin/p/4826507.html