statubarを20px下げてstatusバーを表示

1.
plistで
View controller-based status bar appearance

を NOにする

Status bar style

を Opaque black style にする

2.
下記コードを実装

//iOS7以上の場合は、ステータスバー20px分下げる
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7) {
    CGRect viewBounds = [self.window bounds];
    viewBounds.origin.y = 20;
    viewBounds.size.height = viewBounds.size.height - 20;
    self.window.frame = viewBounds;
}
[UINavigationBar appearance].tintColor = [UIColor blackColor];
[UINavigationBar appearance].titleTextAttributes = @{NSForegroundColorAttributeName: [UIColor blackColor]};


[UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleLightContent;