Glance is lightweight library that allows you debug view hierarchy right from you mobile device or simulator


Swift Package Manager

dependencies: [
    .package(url: "", .upToNextMajor(from: "0.0.1"))


Suggested use-case is to attach Glance to shake gesture in UIWindow extension

import Glance

extension UIWindow {
    open override func motionEnded(_ motion: UIEvent.EventSubtype, with event: UIEvent?) {
        super.motionEnded(motion, with: event)
        if motion == .motionShake {
            Glance.main.debug(view: self)

Custom views

In order you have any custom or not supported view (such as view that drows in content in CGContext), you can provide custom.

final class CustomLayoutProvider: LayoutProvidable {
    var layoutMapper: LayoutMappable?
    func provide(for view: UIView, depth: inout Float, masterView: UIView?) -> [LayoutSnapshot] {
        return [LayoutSnapshot(image: UIImage(), depth: 1, frame: .zero, view: view)]

And then add it to Glance layout providers

class AppDelegate: UIResponder, UIApplicationDelegate {

	func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        Glance.main.addLayoutProvider(provider: CustomLayoutProvider(), viewClass: MyCustomClass.Type)
		return true

View properties (Beta)

By tapping any view in Glance main screen you can inspect view properties.
Now this feature is not fully implemented.


Feel free to open Pull request or issue


View Github