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Register RCTDeviceInfo to invalidating and cleanup observer (#42396)
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Summary:
Pull Request resolved: #42396

Cmmunity reported [#42120](#42120) where React Native was crashing if RCTDeviceInfo native module was receiving a notification while the bridge is invalidating.

Upon investigation, I realized that:
1. The RCTDeviceInfo module is never invalidated
2. Observers are still observing even when the Bridge is in an invalidated state and it is not back up.

This change makes sure that we invalidate the `RCTDeviceInfo.mm` module and that we unregister the observers.

## Changelog:
[iOS][Fixed] - Make `RCTDeviceInfo` listen to invalidate events and unregister observers while invalidating the bridge

Reviewed By: RSNara

Differential Revision: D52912604

fbshipit-source-id: 1727bcdef5393b1bd5a272e2143bc65456c2a389
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cipolleschi authored and facebook-github-bot committed Jan 24, 2024
1 parent 7c4afa1 commit d46d80d
Showing 1 changed file with 33 additions and 0 deletions.
33 changes: 33 additions & 0 deletions packages/react-native/React/CoreModules/RCTDeviceInfo.mm
Expand Up @@ -75,11 +75,44 @@ - (void)initialize
selector:@selector(interfaceFrameDidChange)
name:RCTWindowFrameDidChangeNotification
object:nil];

// TODO T175901725 - Registering the RCTDeviceInfo module to the notification is a short-term fix to unblock 0.73
// The actual behavior should be that the module is properly registered in the TurboModule/Bridge infrastructure
// and the infrastructure imperatively invoke the `invalidate` method, rather than listening to a notification.
// This is a temporary workaround until we can investigate the issue better as there might be other modules in a
// similar situation.
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(invalidate)
name:RCTBridgeWillInvalidateModulesNotification
object:nil];
}

- (void)invalidate
{
_invalidated = YES;
[self _cleanupObservers];
}

- (void)_cleanupObservers
{
[[NSNotificationCenter defaultCenter] removeObserver:self
name:RCTAccessibilityManagerDidUpdateMultiplierNotification
object:[_moduleRegistry moduleForName:"AccessibilityManager"]];

[[NSNotificationCenter defaultCenter] removeObserver:self
name:UIApplicationDidChangeStatusBarOrientationNotification
object:nil];

[[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationDidBecomeActiveNotification object:nil];

[[NSNotificationCenter defaultCenter] removeObserver:self name:RCTUserInterfaceStyleDidChangeNotification object:nil];

[[NSNotificationCenter defaultCenter] removeObserver:self name:RCTWindowFrameDidChangeNotification object:nil];

[[NSNotificationCenter defaultCenter] addObserver:self

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@ntre

ntre May 24, 2024

This seems wrong -- why doing addObserver?

selector:@selector(invalidate)
name:RCTBridgeWillInvalidateModulesNotification
object:nil];
}

static BOOL RCTIsIPhoneNotched()
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