Preferredstatusbarupdateanimation Being Ignored

setStatusBarHidden(_:withAnimation:) deprecated in iOS 9

Refer to preferredStatusBarUpdateAnimation,

Gif

Code

class ViewController: UIViewController {
    var isHidden:Bool = false{
        didSet{
            UIView.animate(withDuration: 0.5) { () -> Void in
                self.setNeedsStatusBarAppearanceUpdate()
            }  
         }
    }
    @IBAction func clicked(sender: AnyObject) {
        isHidden = !isHidden
    }
    override var preferredStatusBarUpdateAnimation: UIStatusBarAnimation{
        return .slide
    }
    override var prefersStatusBarHidden: Bool{
        return isHidden
    }
 }

UIScrollView dynamic status bar

Solution I found (More of a workaround)
declare a boolean called hidden.
Then I overrode these methods:

func scrollViewDidScroll(scrollView: UIScrollView){
    let xOffset = scrollView.contentOffset.x;

    if(xOffset > scrollView.contentSize.width/4)
    {
        if hidden == true {
            print("\nShow status bar\n")

            hidden = false
            UIView.animateWithDuration(0.3, animations: {
                self.setNeedsStatusBarAppearanceUpdate()
            })
        }
    } else
    {
       print("\nHide Status Bar\n")

        hidden = true
        UIView.animateWithDuration(0.2, animations: {
            self.setNeedsStatusBarAppearanceUpdate()
        })
    }
}

override func preferredStatusBarUpdateAnimation() -> UIStatusBarAnimation {
    if hidden == false {
        return UIStatusBarAnimation.Fade
    } else {
        return UIStatusBarAnimation.Slide
    }
}

override func prefersStatusBarHidden() -> Bool {
    print("\nstatus Bar Changed to hidden = \(hidden)\n")
    return hidden
}

It fades the status bar in once you've at least scrolled half way, and slides the status bar back up once you've gone back half way again.

Hiding a statusbar in specifc viewcontroller

In your info.plist add row called View controller-based status bar appearance and set it to NO .

Then call the following code in viewDidload and it should hide with animation:

UIApplication.sharedApplication().statusBarHidden = true

After that you will be getting a warning printed in the console like :

CGContextSaveGState: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.

Just ignore it, as they said its a bug from apple and for reference see here:
How can I set CG_CONTEXT_SHOW_BACKTRACE environmental variable?

Javascript: Expand / Collapse Multiple DIV's with simple code?

This will work.

$('.show_hide').click(function(){
      $(this).next('.slidingDiv').slideToggle();
      return false;
});

jsfiddle - http://jsfiddle.net/ABrunkhorst/vFnqp/1/

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