fix(android): avoid calling getJSModule in init

[n-kulic]

What

sendAvailableDevicesChangedEvent is calling getJSModule from init (introduced in PR #3575), which could crash with
IllegalStateException: "getJSModule should only happen once initialize() has been called".

react-native-vision-camera/package/android/src/main/java/com/mrousavy/camera/react/CameraDevicesManager.kt

Lines 62 to 76 in 5206c78

	// Init cameraProvider + manager as early as possible
	init {
	coroutineScope.launch {
	try {
	Log.i(TAG, "Initializing ProcessCameraProvider...")
	cameraProvider = ProcessCameraProvider.getInstance(reactContext).await(executor)
	Log.i(TAG, "Initializing ExtensionsManager...")
	extensionsManager = ExtensionsManager.getInstanceAsync(reactContext, cameraProvider!!).await(executor)
	Log.i(TAG, "Successfully initialized!")
	} catch (error: Throwable) {
	Log.e(TAG, "Failed to initialize ProcessCameraProvider/ExtensionsManager! Error: ${error.message}", error)
	}
	sendAvailableDevicesChangedEvent()
	}
	}

---

Now JS events are emitted safely from initialize() after React is ready.

Changes

• Move sendAvailableDevicesChangedEvent() call from init to initialize()
• Ensure hot restart / app start no longer crashes

Tested on

• Google Pixel 7, Android 16
• Samsung Galaxy S21, Android 15

Related issues

• Fixes 🔧 AndroidRuntime: java.lang.IllegalStateException: Tried to access a JS module before the React instance was fully set up. Calls to ReactContext#getJSModule should only happen once initialize() has been called on your native module. #3609

[vercel]

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Project	Deployment	Preview	Comments	Updated (UTC)
react-native-vision-camera	Ready	Preview	Comment	Sep 5, 2025 9:23pm

[raeiny0day]

would be great to have this fix released in the next version soon 👍

[mattijsf]

@mrousavy Can we maybe get a release with this fix? It currently causes a crash on productions for users that launch the app for the first time after install. Applying this path manually resolves this issue. I guess it is a timing / race condition. But clearly, this patch does fix it.

[mrousavy]

released

…

On 12.11.2025, at 16:18, mattijsf ***@***.***> wrote: mattijsf left a comment (mrousavy/react-native-vision-camera#3623) <#3623 (comment)> @mrousavy <https://github.com/mrousavy> Can we maybe get a release with this fix? It currently causes a crash on productions for users that launch the app for the first time after install. Applying this path manually resolves this issue. I guess it is a timing / race condition. But clearly, this patch does fix it. — Reply to this email directly, view it on GitHub <#3623 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ADT6WN23QGI2PWP3QSOOUID34NFTRAVCNFSM6AAAAACFYJVEZKVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTKMRSGM4TSOJXG4>. You are receiving this because you were mentioned.