[bartleman]

Problem

An app built against the tvOS 27 SDK that still uses the legacy UIApplicationMain + storyboard lifecycle fails to launch. The system refuses to create its scene and the app exits before main, with this in the device log:

Application failed to launch: UIScene life cycle is required for apps built with this SDK.
See "Transitioning to the UIKit scene-based life cycle" ...
[FBSceneManager] Scene creation failed: ... ("scene-creation-failed")

Apps built against the tvOS 26.5 SDK are exempt and still run on tvOS 27, so this only bites once you build the tvOS target with Xcode 27 / the tvOS 27 SDK.

Fix

• Add a minimal UIApplicationSceneManifest to Moonlight TV/Info.plist.
• Add a small UIWindowSceneDelegate that builds the window from the Main storyboard. To avoid adding a new source file to the project, it's declared in AppDelegate.m under #if TARGET_OS_TV.
• Make the tvOS HDR / refresh-rate code scene-safe: under the scene lifecycle the app delegate's -window is nil, so updatePreferredDisplayMode: now reads the window from the view controller (self.view.window). If the view isn't attached to a window yet (the stream is started from viewDidLoad, so the HDR callback can arrive before the push animation completes), it falls back to the connected UIWindowScene's window.

Notes

• tvOS only. Only the tvOS target is touched. The iOS target is unchanged; it will need the same migration when built against a future iOS SDK that enforces scenes (that's a larger change — SWRevealViewController, shortcut-item handling — so I've left it out of this PR).
• Does not change TVOS_DEPLOYMENT_TARGET. UIScene has existed since tvOS 13, so nothing here needs more than the current tvOS 15 minimum.
• Rebased onto current master (Xcode 27 project settings, GitHub Actions CI).

Testing

Built with Xcode 27 beta against the tvOS 27 SDK and run on an Apple TV 4K (3rd gen), tvOS 27.0 (24J5346a): the app launches, the UI appears, host discovery/pairing work, and streaming works. Also verified the tvOS 26.5-SDK build (Xcode 26.6) still launches and runs normally with this change (no regression).

The GitHub Actions workflow (tvOS + iOS, Debug + Release) passes on my fork: https://github.com/bartleman/moonlight-ios/actions?query=branch%3Atvos-uiscene-lifecycle

[TrueZhuangJia]

https://github.com/The-Fried-Fish/VoidLink-previously-moonlight-zwm/tree/Integration
build VoidLink TV, it's generally usable now

[bartleman]

Rebased onto current master (after the Xcode 27 project updates and the switch to GitHub Actions) and squashed to a single commit. The one functional change since the original revision is in updatePreferredDisplayMode:: when the view isn't attached to a window yet it now falls back to the connected UIWindowScene's window rather than the app delegate's, which is always nil under the scene lifecycle.

The CI workflow passes on my fork for both targets, Debug and Release: https://github.com/bartleman/moonlight-ios/actions/runs/38959480526

The AppVeyor failure shown on the earlier revision predates the CI switch; the workflow run here just needs approval to run.