How to record not only the app's screen but everything on the screen, including other apps

Question

I'm trying to implement screen recording app using ReplayKit(Swift). It seems when I'm going outside the app, stops background record. After trying some documents, so far I understand I need to implement Broadcast Extension. If my understanding is right, then So please give me some programming guide about that.

Answer 1

You need to implement Broadcast Extension. Process is given below:

1. Create a new Xcode project
2. Import ReplayKit
3. Add a UIView in storyboard and change its class to RPSystemBroadcastPickerView in storyboard Identity Inspector
4. File > New > Target > Broadcast Upload Extension
5. Xcode > Project Navigator > Targets > Select Extension > General > Change Deployment Info > Match with your main project
6. Click on View created in step 3 should pop up view for broadcast.

Answer 2

Try this library

Screen capture

OR this one:

Vid recorder

import ScreenCapture

let recorder = ScreenCapture.recordScreen("/path/to/save/to.mp4")

recorder.start()
...
recorder.stop()

let movieUrl = recorder.destination

Otherwise you could do:

import ReplayKit
import UIKit

class ViewController: UIViewController, RPPreviewViewControllerDelegate {
    override func viewDidLoad() {
        super.viewDidLoad()

        navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Start", style: .plain, target: self, action: #selector(startRecording))
    }

    @objc func startRecording() {
        let recorder = RPScreenRecorder.shared()

        recorder.startRecording{ [unowned self] (error) in
            if let unwrappedError = error {
                print(unwrappedError.localizedDescription)
            } else {
                self.navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Stop", style: .plain, target: self, action: #selector(self.stopRecording))
            }
        }
    }

    @objc func stopRecording() {
        let recorder = RPScreenRecorder.shared()

        recorder.stopRecording { [unowned self] (preview, error) in
            self.navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Start", style: .plain, target: self, action: #selector(self.startRecording))

            if let unwrappedPreview = preview {
                unwrappedPreview.previewControllerDelegate = self
                self.present(unwrappedPreview, animated: true)
            }
        }
    }

    func previewControllerDidFinish(_ previewController: RPPreviewViewController) {
        dismiss(animated: true)
    }
}

Replay Kit only record it's current app screen, whenever the app becomes background, the recording will be stopped and that's by-design.