Flutter - iOS API Misuse <CBCentralManager: 0x30032d2c0> - Stack Overflow

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I've a Flutter app built using flutter_blue_plus, this works just fine on android but when I try to run it on iOS it gives an issue when I try to initiate a BLE scan.

The log stream for the same being-

flutter: The Dart VM service is listening on http://127.0.0.1:56397/WD53Kf2Lcb8=/
[FBP-iOS] handleMethodCall: flutterRestart
[FBP-iOS] initializing CBCentralManager
[FBP-iOS] showPowerAlert: yes
[FBP-iOS] restoreState: no
API MISUSE: <CBCentralManager: 0x30032d2c0> has no restore identifier but the delegate implements the centralManager:willRestoreState: method. Restoring will not be supported
[FBP-iOS] initializing checkForMtuChangesTimer
[FBP-iOS] disconnectAllDevices(flutterRestart)
[FBP-iOS] connectedPeripherals: 0
[FBP-iOS] handleMethodCall: getAdapterState
[FBP-iOS] centralManagerDidUpdateState CBManagerStatePoweredOn

The bluetooth implementation of mine is here for reference. The exact same thing works fine on Android so I'm assuming, it is some iOS platform specific thing that I'm missing.

Thanks Regards.

I've a Flutter app built using flutter_blue_plus, this works just fine on android but when I try to run it on iOS it gives an issue when I try to initiate a BLE scan.

The log stream for the same being-

flutter: The Dart VM service is listening on http://127.0.0.1:56397/WD53Kf2Lcb8=/
[FBP-iOS] handleMethodCall: flutterRestart
[FBP-iOS] initializing CBCentralManager
[FBP-iOS] showPowerAlert: yes
[FBP-iOS] restoreState: no
API MISUSE: <CBCentralManager: 0x30032d2c0> has no restore identifier but the delegate implements the centralManager:willRestoreState: method. Restoring will not be supported
[FBP-iOS] initializing checkForMtuChangesTimer
[FBP-iOS] disconnectAllDevices(flutterRestart)
[FBP-iOS] connectedPeripherals: 0
[FBP-iOS] handleMethodCall: getAdapterState
[FBP-iOS] centralManagerDidUpdateState CBManagerStatePoweredOn

The bluetooth implementation of mine is here for reference. The exact same thing works fine on Android so I'm assuming, it is some iOS platform specific thing that I'm missing.

Thanks Regards.

• ios
• flutter
• cbcentralmanager

Share Improve this question Follow asked Apr 2 at 6:44 Yolo-cell-hashYolo-cell-hash 931111 bronze badges

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1 Answer 1

Sorted by: Reset to default 1

It is a warning that won't necessarily affect the operation of your app.

Exactly as the message says, the CBCentralManagerDelegate in flutter_blue_plus implements the willRestoreState method, but the CBCentralManagerOptionRestoreIdentifierKey is only specified if your set FlutterBluePlus.setOptions(restoreState: true); as described in the documentation.

Opting in to state restoration allows iOS to relaunch your app if a pending Bluetooth operation (such as completing a pending connection to a peripheral) occurs while your app is terminated.

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