[ios] How to programmatically get iOS status bar height

I know that currently the status bar (with the time, battery, and network connection) at the top of the iPhone/iPad is 20 pixels for non-retina screens and 40 pixels for retina screens, but to future proof my app I would like to be able to determine this without hard coding values. Is it possible to figure out the height of the status bar programmatically?

For iOS 13 you can use:

UIApplication.shared.keyWindow?.windowScene?.statusBarManager?.statusBarFrame.height

Go with Martin's suggestion to the question: Get iPhone Status Bar Height.

CGFloat AACStatusBarHeight()
{
    CGSize statusBarSize = [[UIApplication sharedApplication] statusBarFrame].size;
    return MIN(statusBarSize.width, statusBarSize.height);
}

And in Swift

func statusBarHeight() -> CGFloat {
    let statusBarSize = UIApplication.shared.statusBarFrame.size
    return Swift.min(statusBarSize.width, statusBarSize.height)
}

It seems like a hack, but it's actually pretty solid. Anyway, it's the only working solution.

Old Answer

The following code, which would go in your custom subclass of UIViewController, almost worked to support landscape. But, I noticed a corner case (when rotating from right > unsupported upside-down > left) for which it didn't work (switched height & width).

BOOL isPortrait = self.interfaceOrientation == UIInterfaceOrientationPortrait;
CGSize statusBarSize = [UIApplication sharedApplication].statusBarFrame.size;
CGFloat statusBarHeight = (isPortrait ? statusBarSize.height : statusBarSize.width);

Swift 3 or Swift 4:

UIApplication.shared.statusBarFrame.height

Swift 5

UIApplication.shared.statusBarFrame.height

While the status bar is usually 20pt tall, it can be twice that amount in some situations:

• when you're in the middle of a phone call (that's a pretty common scenario);
• when the voice recorder, or Skype, or a similar app, is using the microphone in the background;
• when Personal Hotspot is activated;

Just try it, and you'll see for yourself. Hardcoding the height to 20pt will usually work, until it doesn't.

So I second H2CO3's answer:

statusBarHeight = [[UIApplication sharedApplication] statusBarFrame].size.height;

UIApplication.shared.statusBarFrame.height was deprecated in iOS 13

'statusBarFrame' was deprecated in iOS 13.0: Use the statusBarManager property of the window scene instead.

You can retrieve status bar height in iOS 13 like follows:

let statusBarHeight = view.window?.windowScene?.statusBarManager?.statusBarFrame.height

NB! It's optional so make sure you have correct fallback.

EDIT The iOS 11 way to work out where to put the top of your view content is UIView's safeAreaLayoutGuide See UIView Documentation.

DEPRECATED ANSWER If you're targeting iOS 7+, The documentation for UIViewController advises that the viewController's topLayoutGuide property gives you the bottom of the status bar, or the bottom of the navigation bar, if it's also visible. That may be of use, and is certainly less hack than many of the previous solutions.

Try this:

CGFloat statusBarHeight = [[UIApplication sharedApplication] statusBarFrame].size.height;

I just found a way that allow you not directly access the status bar height, but calculate it.

Navigation Bar height - topLayoutGuide length = status bar height

Swift:

let statusBarHeight = self.topLayoutGuide.length-self.navigationController?.navigationBar.frame.height

self.topLayoutGuide.length is the top area that's covered by the translucent bar, and self.navigationController?.navigationBar.frame.height is the translucent bar excluding status bar, which is usually 44pt. So by using this method you can easily calculate the status bar height without worring about status bar height change due to phone calls.

By default Status Bar height in iOS is 20 pt.

More info: http://www.idev101.com/code/User_Interface/sizes.html

Here is a Swift way to get screen status bar height:

var screenStatusBarHeight: CGFloat {
    return UIApplication.sharedApplication().statusBarFrame.height
}

These are included as a standard function in a project of mine: https://github.com/goktugyil/EZSwiftExtensions

    var statusHeight: CGFloat!
    if #available(iOS 13.0, *) {
         statusHeight = UIApplication.shared.keyWindow?.windowScene?.statusBarManager?.statusBarFrame.height
    } else {
        // Fallback on earlier versions
        statusHeight = UIApplication.shared.statusBarFrame.height
    }

Don't forget that the status bar's frame will be in the screen's coordinate space! If you launch in landscape mode, you may find that width and height are swapped. I strongly recommend that you use this version of the code instead if you support landscape orientations:

CGRect statusBarFrame = [self.window convertRect:[UIApplication sharedApplication].statusBarFrame toView:view];

You can then read statusBarFrame's height property directly. 'View' in this instance should be the view in which you wish to make use of the measurements, most likely the application window's root view controller.

Incidentally, not only may the status bar be taller during phone calls, it can also be zero if the status bar has been deliberately hidden.

Using following single line code you can get status bar height in any orientation and also if it is visible or not

#define STATUS_BAR_HIGHT (
    [UIApplicationsharedApplication].statusBarHidden ? 0 : (
        [UIApplicationsharedApplication].statusBarFrame.size.height > 100 ?
            [UIApplicationsharedApplication].statusBarFrame.size.width :
            [UIApplicationsharedApplication].statusBarFrame.size.height
    )
)

It just a simple but very useful macro just try this you don't need to write any extra code