I've been pulling my hair out, even after pulling everything out in to a on a simple Multi-platform project, with two demos. ASK and Not ASK. If ASK isn't completely branched it burns BT radios.
In the flagship sample project
private static let pinkDice: ASPickerDisplayItem = {
let descriptor = ASDiscoveryDescriptor()
descriptor.bluetoothServiceUUID = DiceColor.pink.serviceUUID
return ASPickerDisplayItem(
name: DiceColor.pink.displayName,
productImage: UIImage(named: DiceColor.pink.diceName)!,
descriptor: descriptor
)
}()
I only see bluetoothServiceUUID provided, in the docs however:
Each display item’s descriptor, a property of type ASDiscoveryDescriptor, needs to have a bluetoothCompanyIdentifier or bluetoothServiceUUID, and at least one of the following accessory identifiers:
bluetoothNameSubstring
A bluetoothManufacturerDataBlob and bluetoothManufacturerDataMask set to the same length.
A bluetoothServiceDataBlob and > bluetoothServiceDataMask set to the same length.
It wasn't until I removed bluetoothNameSubstring and ignored documentation, did I get the picker to do something. No clue why or how to debug.
The Service UUIDs given to me are downcased, and that's what I entered in my NSAccessorySetupBluetoothServices array, it crashed because it must running an exact match withCBUUID(string: "my-downcased-uuid").uuidString
let uuid = UUID()
let uuidStringDowncased = uuid.uuidString.lowercased()
let uuidString = uuid.uuidString
let udidFromDownCase = UUID(uuidString: uuidString)
let uuidFromString = UUID(uuidString: uuidStringDowncased)
let cbuuidFromDownCase = CBUUID(string: uuidStringDowncased)
let cbuuidFromString = CBUUID(string: uuidString)
let result = udidFromDownCase == uuidFromString ? "They are the same" : "They are different"
// => They are the same
let result2 = cbuuidFromDownCase == cbuuidFromString ? "They are the same" : "They are different"
// => They are the same
If CBUUID thinks they are the same, shouldn't ASK too, when parsing undocumented plist keys?
For a Project -> New -> Multi-platform App (So MacOS target must init CBCentralManager with privacy plist keys. What keys do I include, and what are the consequences? What breaks what depending on what's included?
NSAccessorySetupBluetoothNames NSAccessorySetupKitSupports NSAccessorySetupBluetoothServices
NSBluetoothAlwaysUsageDescription
Within the same binary of an iOS 18 target, how do you demonstrate both implementations, with two separate peripherals? Dice one with ASK, dice two without.
The overload for this signature...whyyyyyyy
session.showPicker()
Present a picker that shows accessories managed by a Device Discovery Extension in your app.
session.showPicker(for:)
Present a picker that shows discovered accessories matching an array of display items.
invalidate() sounds important, demo/docs should talk about it more.
Topic:
App & System Services
SubTopic:
Hardware
Tags: