Transition between controllers to top. You can change animatable height after presentation controller.

For presentation and dismissing using custom transition delegate.

You can set any content to bottom controller, like buttons or even collection as in preview. For implement settings as in preiew, see section Settings Controller.

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• Requirements
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Swift 4.2 & 5.0. Ready for use on iOS 10+

The Swift Package Manager is a tool for managing the distribution of Swift code. It’s integrated with the Swift build system to automate the process of downloading, compiling, and linking dependencies.

To integrate using Xcode 12, specify it in File > Swift Packages > Add Package Dependency...:

https://github.com/ivanvorobei/SPLarkController

CocoaPods is a dependency manager for Cocoa projects. For usage and installation instructions, visit their website. To integrate using CocoaPods, specify it in your Podfile:

pod 'SPLarkController'

If you prefer not to use any of dependency managers, you can integrate manually. Put Sources/ProjectName folder in your Xcode project. Make sure to enable Copy items if needed and Create groups.

Create controller and call func presentAsLark:

import UIKit
import SPLarkController

class ViewController: UIViewController {
    
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)

        let controller = UIViewController()
        self.presentAsLark(controller)
    }
}

If you want customize controller (set custom height and other), create controller and set transitioningDelegate to SPLarkTransitioningDelegate object. Use present or dismiss functions:

let controller = UIViewController()
let transitionDelegate = SPLarkTransitioningDelegate()
controller.transitioningDelegate = transitionDelegate
controller.modalPresentationStyle = .custom
controller.modalPresentationCapturesStatusBarAppearance = true
self.present(controller, animated: true, completion: nil)

Please, do not init SPLarkTransitioningDelegate like this:

controller.transitioningDelegate = SPLarkTransitioningDelegate()

You will get an error about weak property.

Parameter customHeight sets custom height for modal controller. Default is nil:

transitionDelegate.customHeight = 350

For change height after presenting use with code:

if let presentationController = self.presentationController as? SPLarkPresentationController {
    presentationController.updateHeight(600)
}

You can see how it work in Example folder. I am plase ready-use project.

You can simple implement settings controller as in preview. You need extend from SPLarkSettingsController and implement all methods for it. See class for more details.

class SettingsController: SPLarkSettingsController {}

The project uses a snapshot of the screen in order to avoid compatibility and customisation issues. Before controller presentation, a snapshot of the parent view is made, and size and position are changed for the snapshot. Sometimes you will need to update the screenshot of the parent view, for that use static func:

SPLarkController.updatePresentingController(modal: controller)

and pass the controller, which is modal and uses SPLarkTransitioningDelegate

If you want to present modal controller on SPLarkController, please set:

controller.modalPresentationStyle = .custom

It’s needed for correct presentation and dismissal of all modal controllers.

I love being helpful. Here I have provided a list of libraries that I keep up to date. For see video previews of libraries without install open opensource.ivanvorobei.by website.
I have libraries with native interface and managing permissions. Also available pack of useful extensions for boost your development process.

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