EAAccessoryManager showBluetoothAccessoryPickerWithNameFilter crashes

Originator:Atrinax
Number:rdar://29155887 Date Originated:8 Nov 2016
Status:Open Resolved:No
Product:iOS Product Version:10.0.1
Classification:iPod Accessory Protocol (iAP) Reproducible:Yes
 
When bluetooth is disabled, app crashes when calling EAAccessoryManager.shared().showBluetoothAccessoryPicker(withNameFilter: nil, completion: { error in
        print(error?.localizedDescription)
      }) 
for the second time.

Steps to Reproduce:
1. Disable bluetooth in settings
2. Call EAAccessoryManager.shared().showBluetoothAccessoryPicker
3. Click OK
4. Call EAAccessoryManager.shared().showBluetoothAccessoryPicker anytime again in the app
5. Observe crash

Comments

Possible solution

Here is how I deal with the issue for a time being: 

import ExternalAccessory
import CoreBluetooth

let btManager = CBCentralManager()

func pair() {
    if btManager.state == .poweredOn {
        EAAccessoryManager.shared()
            .showBluetoothAccessoryPicker(withNameFilter: nil)
    }
}

This will display a prompt to enable bluetooth or show a picker if the bluetooth is enabled.

By Atrinax at Nov. 8, 2016, 10:08 a.m. (reply...)

Thread with similar problem: http://stackoverflow.com/questions/39509272/eaaccessorymanager-showbluetoothaccessorypickerwithnamefilter-crashes-on-ios-10

Another radar: rdar://27689885 (not publicly available)

By Atrinax at Nov. 8, 2016, 9:26 a.m. (reply...)

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