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Fix: restore keyboard/mouse input on iPadOS after app returns from background

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When the user switches to another app and returns to RustDesk on iPadOS,
all input (keyboard, trackpad, touch) stops working until the app is
restarted.

Root cause: iOS silently drops the Flutter focus node when the app goes
to background. On resume, nobody re-requests the focus so input events
never reach the session.

Fix: call _restoreInputOnResume() from didChangeAppLifecycleState when
state == resumed. This restarts the mouse listener and re-requests
physical keyboard focus with a short delay (same pattern already used
in onSoftKeyboardChanged for the iOS virtual keyboard workaround).

Tested on iPad Pro with Magic Keyboard Folio running iPadOS 26.3.1,
connecting to macOS via self-hosted RustDesk server over Tailscale.

Fixes: #4570, #8768

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Nelson Ordóñez 2026-03-30 18:05:59 +02:00
parent 010a54d1c9
commit 8370656fab
1 changed files with 20 additions and 0 deletions
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20
flutter/lib/mobile/pages/remote_page.dart
View file

@ -154,9 +154,29 @@ class _RemotePageState extends State<RemotePage> with WidgetsBindingObserver {
void didChangeAppLifecycleState(AppLifecycleState state) {
if (state == AppLifecycleState.resumed) {
trySyncClipboard();
_restoreInputOnResume();
}
}
// Fix: restore keyboard/mouse input after returning from background on iPadOS.
// Bug: switching apps on iPadOS loses all input (keyboard, trackpad, touch).
// Root cause: iOS drops the focus node when app goes to background; nobody re-requests it.
// Fix: on resume, restart mouse listener and re-request physical focus with a small
// delay (same pattern already used in onSoftKeyboardChanged for iOS keyboard workaround).
void _restoreInputOnResume() {
if (!isIOS) return;
gFFI.inputModel.listenToMouse(true);
_iosKeyboardWorkaroundTimer?.cancel();
_iosKeyboardWorkaroundTimer = Timer(Duration(milliseconds: 100), () {
if (!mounted) return;
_physicalFocusNode.unfocus();
_iosKeyboardWorkaroundTimer = Timer(Duration(milliseconds: 50), () {
if (!mounted) return;
_physicalFocusNode.requestFocus();
});
});
}
// For client side
// When swithing from other app to this app, try to sync clipboard.
void trySyncClipboard() {