iOS: Black screen after returning to app from external link (regression after updating screen_protector)

[codebyniki]

After updating screen_protector, the previous issue with the iOS Accessibility setting “Higher Contrast” is fixed. However, I’m now seeing a new issue: if the app is sent to background by opening an external link (e.g. Safari) and then resumed, the app shows a permanent black screen.

Steps to reproduce

1. Enable screen protection via screen_protector.
2. Run the app on iOS.
3. Open an external link from within the app (e.g. using url_launcher), which backgrounds the app.
4. Return to the app (app switcher / back to app).

Expected behavior

App resumes normally and UI is visible.

Actual behavior

App resumes to a black screen (UI not rendered). The app remains unresponsive/blank until force-closed and restarted.

Environment

screen_protector: 1.5.1
Flutter: 3.35.7 / Dart: 3.9.2
iOS: 26.3
Affected: iOS only

[Dchll]

In my app, screen_protector works correctly with version 1.4.2+1 (Flutter 3.38.9, iOS 26).
You can test with the same setup. Please do not use the ranged version notation ^1.4.2+1; instead, pin it to an exact version (for example, 1.4.2).
在我的应用中，screen_protector 使用 1.4.2+1 可以正常运行（Flutter 3.38.9，iOS 26）。
你可以按这个环境测试一下。请不要使用 ^1.4.2+1 这种范围写法，必须固定为具体版本（如 1.4.2）。

[codebyniki]

Thank you for your comment. I tried it with 1.4.3 and it worked.

[Dchll]

After upgrading to Flutter 3.41.x, version 1.4.3 will no longer work, and version 1.5.1 will have crash issues that the author has not yet fixed. You might consider switching to no_screenshot; I've tried it and it works.

升级到 flutter 3.41.x 后，1.4.3版本会失效，1.5.1会有崩溃问题，作者目前还没有修复，可以考虑换到 no_screenshot，我试过了是可以用的