CaptureGuard

This Swift Package helps developers hide or show parts of the screen when a screenshot or screen recording is taken on iOS devices, like iPhones and iPads. It works with both SwiftUI and UIKit frameworks.

Check out the full article for a detailed explanation of how this library works.

Disclaimer

The authors of this package take no responsibility for any issues or consequences arising from its use. The code is provided as-is, and there is no guarantee that it will function as intended, especially with future updates to iOS.

Important Notes:

• The SwiftUI implementation is believed to be relatively safe for App Store submission. However, care should be taken with each iOS update to ensure that nothing breaks.
• The UIKit implementation utilizes certain private framework symbols, which may lead to rejection from the App Store. It is recommended to use this package as a reference and consider enforcing similar functionality via alternative approaches.

Compatibility

• Swift 5.9
• iOS 15+
• SwiftUI / UIKit
• This package will not function (no effect) in the iOS Simulator and must be tested on a real device.

Installation

1. In Xcode, go to File > Add Packages.
2. Enter the package repository URL.
3. Select your target and include the package in your project.

SwiftUI Usage

You can use the provided hiddenOnCapture() and visibleOnlyOnCapture() view modifiers to control the visibility of views when a screenshot or screen recording occurs.

Example

import SwiftUI
import ScreenCaptureView

struct ContentView: View {
    var body: some View {
        VStack {
            Text("Hidden on capture")
                .hiddenOnCapture() // This text will be hidden when capturing the screen
            
            Text("Visible only on capture")
                .visibleOnlyOnCapture() // This text will be visible only during capture
        }
        .font(.largeTitle)
    }
}

UIKit Usage

For UIKit, you can subclass either HiddenOnCaptureView or VisibleOnlyOnCaptureView, or you can directly apply the makeHideableOnCapture() method on any UIView’s CALayer to achieve the same effect.

Example

import UIKit
import ScreenCaptureView

class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let hiddenOnCaptureView = HiddenOnCaptureView()
        hiddenOnCaptureView.backgroundColor = .red
        hiddenOnCaptureView.widthAnchor.constraint(equalToConstant: 100).isActive = true
        hiddenOnCaptureView.heightAnchor.constraint(equalToConstant: 40).isActive = true
        view.addSubview(hiddenOnCaptureView)
        
        let visibleOnlyOnCaptureView = VisibleOnlyOnCaptureView()
        visibleOnlyOnCaptureView.backgroundColor = .green
        visibleOnlyOnCaptureView.widthAnchor.constraint(equalToConstant: 100).isActive = true
        visibleOnlyOnCaptureView.heightAnchor.constraint(equalToConstant: 40).isActive = true
        view.addSubview(visibleOnlyOnCaptureView)
        
        // Alternatively, use `makeHiddenOnCapture()` method on any UIView's layer
        hiddenOnCaptureView.layer.makeHideableOnCapture()
    }
}

License

This package is licensed under the MIT License. For more details, refer to the LICENSE file in the repository.