解决方法
只需三个步骤：
1：将UINavigationControllerDelegate,UIImagePickerControllerDelegate添加到您的
@interface yourController ()<>
2：imagePickerController.delegate = self;
3：
-(void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];
}
