第一种方法:

    [UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleBlackOpaque;

   self.navigationController.navigationBar.tintColor = [UIColor blackColor];

   if (is_ios_7_Later) {

       self.view.window.frame =  CGRectMake(0, 20, self.view.window.frame.size.width, self.view.window.frame.size.height - 20);

        [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackTranslucent animated:NO];

    }

第二种方法(这方法比较简单):

   UIView *statusBarView=[[UIViewalloc] initWithFrame:CGRectMake(0, 0, 320, 20)];

    statusBarView.backgroundColor=[UIColorblackColor];

    [self.viewaddSubview:statusBarView];

    [[UIApplicationsharedApplication] setStatusBarStyle:UIStatusBarStyleLightContentanimated:NO];

ios 设置状态栏背景颜色