UIApplication.sharedApplication().setStatusBarStyle() deprecated in iOS 9

Question

I have been using

UIApplication.sharedApplication().setStatusBarStyle()

In my appDelegate and it has worked fine, but since iOS 9, this method

Answer 1

To dynamically update UIStatusBarStyle on view controllers use this method

this will also remove deprecated warning

'setStatusBarStyle:' is deprecated: first deprecated in iOS 9.0 - Use -[UIViewController preferredStatusBarStyle]

for calling

[[UIApplication sharedApplication] setStatusBarStyle:style];

Let's Get Started

Objective - C

define UtilityFunction

+(void)setStatusBarStyle:(UIStatusBarStyle )style {    
    [[NSUserDefaults standardUserDefaults] setInteger:style forKey:@"UIStatusBarStyle"];
    [[NSUserDefaults standardUserDefaults] synchronize];
}

over-ride this method in your BaseViewController

- (UIStatusBarStyle)preferredStatusBarStyle {
    UIStatusBarStyle style = [[NSUserDefaults standardUserDefaults] integerForKey:@"UIStatusBarStyle"];
    return style;
}

set UIStatusBarStyle value for the AnyViewController using a UtilityFunction like below:

[UtilityFunctions setStatusBarStyle:UIStatusBarStyleDefault];

// call below code for preferred style
[self preferredStatusBarStyle];

Swift 4.0

define UtilityFunction

class func setPreferedStyle(style:UIStatusBarStyle)->Void {
    UserDefaults.standard.set(style, forKey: "UIStatusBarStyle")
    UserDefaults.standard.synchronize()
}

over-ride this method in your BaseViewController

override var preferredStatusBarStyle: UIStatusBarStyle {
    if let style: UIStatusBarStyle = UIStatusBarStyle(rawValue:UserDefaults.standard.integer(forKey: "UIStatusBarStyle")) {
        return style
    }
    return UIStatusBarStyle.lightContent
}

set UIStatusBarStyle value for the AnyViewController using a UtilityFunction like below:

Utility.setPreferedStyle(style: .lightContent)

// call below code for preferred style
preferredStatusBarStyle()