iOS Crash When Calling BluetoothLowEnergy.connect

[liheng-zhang]

We have a function that connects to a Bluetooth device and reads its RSSI to estimate the distance based on signal strength (without scan and addListener). This function works perfectly on Android. However, on iOS, the app crashes when calling BluetoothLowEnergy.connect. The crash logs indicate the following error:

The retrievePeripheral(_:deviceId:) function likely tried to access a dictionary, array, or optional variable without checking if it was nil. A missing guard let or if let check before unwrapping an optional. The deviceId being passed might not be valid, or the peripheral might not be found.

Has anyone encountered a similar issue or found a solution? Any insights would be appreciated!

[
crashlog.txt
](url)

[robingenz]

Thank you for reporting that. Which options do you pass to the method?

[robingenz]

Does the following dev build fixes your issue?

npm i @capawesome-team/capacitor-bluetooth-low-energy@7.0.5-dev.97020cb.1742200848

[liheng-zhang]

Yes, this issue has been resolved in this development build. Thank you.