白色状态栏

#import <UIKit/UIKit.h>

@interface UINavigationController (statusBarStyle)

//白色状态栏

- (UIStatusBarStyle)preferredStatusBarStyle;

@end

//********************************************************************************************************//

#import "UINavigationController+statusBarStyle.h"

@implementation UINavigationController (statusBarStyle)

-(UIStatusBarStyle)preferredStatusBarStyle {

    return UIStatusBarStyleLightContent;

}

@end

//***************************************************************************************************//;

[ UINavigationController *navi = [[UINavigationController alloc]initWithRootViewController:viewVC];

[navi preferredStatusBarStyle];//