[iOS] [checkState] Always returns 'unknown'

[joenini]

Describe the bug
On iOS, using bleManager.checkState() always returns 'unknown'. I tried with Bluetooth permissions granted/ not granted, and with Bluetooth on/ off.

Smartphone (please complete the following information):

• Device: [e.g. iPhone8/11]
• OS: [e.g. iOS16/17]
• react-native-ble-manager version: 11.3.2
• react-native version: 0.72.6

Additional context
However, the listener for BleManagerDidUpdateState is receiving the correct state ['unauthorized', 'off', 'on'].
Also, on Android bleManager.checkState() returns the correct state.

[lucaswitch]

Make sure to wrap it on a "await" call. I'm also using 11.3.2 and never had this problem.

[joenini]

I do have await, same as in your screenshot.

[hisstoryxx]

I have same ISSUE!!
using 11.4.0 version in iOS

[hisstoryxx]

I think this function doesn't guarantee completion.
await BleManager.checkState();

so need to check the state of BleManagerDidUpdateState

await BleManager.start();

    const listener = BleManager.addListener(
      BleEventType.BleManagerDidUpdateState,
      event => {
        console.log(
          `${new Date().toISOString()} =============================================`,
        );
        console.log(event);

        BleManager.removeAllListeners(
          BleEventType.BleManagerDidUpdateState,
        );
      },
    );

[lucaswitch]

Make sure to call functions just after start method cause ble manager needs to have CBCentralManager instance ready to do proper work, see: https://github.com/innoveit/react-native-ble-manager/blob/master/ios/BleManager.swift
Probably not a library issue.

There's the behaviors:

checkState(imperative): Gives the current state even if it's not ready will report unknown asap.

BleManagerDidUpdateState(Event driven): As soon CBCentralManager is ready with start to report changes