objective-c - iOS 7 自动控制系统 : Discovering the primary ANCS Service UUID

Question

在 iOS7 下，主要的 ANCS 服务是否意味着不断地被广告，或者它是否需要在混淆设置中启用/使用自定义 CBPeripheralManager(使用 Apple 指定的服务和特征 UUID)实现，以便潜在的通知消费者成功发现并订阅？

Apple 文档(CoreBluetooth Programming Guide 和 ANCS Specification)令人惊讶地没有任何关于此的信息。他们似乎暗示需要自定义实现，但这只是我们的推测。

给定主 ANCS 服务 UUID:7905F431-B5CE-4E99-A40F-4B1E122D00D0，执行扫描不会产生任何命中。正如预期的那样，扫描整个 BLE 频谱会产生其他 BLE 设备的命中，但不会产生单个 ANCS 设备。

编辑 1:

定义自定义 CBPeripheralManager 并手动添加 Apple 指定的 ANCS 服务及其相关特征失败，并出现 NSError:Error Domain=CBErrorDomain Code=8 “The specified UUID is not allowed for this operation.”

因此，服务 UUID 似乎由 Apple 保留(本应如此)，我们无法以这种方式启用它。

非常感谢任何见解；我们已就此事与 Apple 取得联系，并会在收到他们的回复后进行更新。

下面的代码重现了上面提到的 NSError:

// define the ANCS Characteristics
CBUUID *notificationSourceUUID = [CBUUID UUIDWithString:@"9FBF120D-6301-42D9-8C58-25E699A21DBD"];
CBMutableCharacteristic *notificationSource = [[CBMutableCharacteristic alloc] initWithType:notificationSourceUUID properties:CBCharacteristicPropertyNotifyEncryptionRequired value:nil permissions:CBAttributePermissionsReadEncryptionRequired];
CBUUID *controlPointUUID = [CBUUID UUIDWithString:@"69D1D8F3-45E1-49A8-9821-9BBDFDAAD9D9"];
CBMutableCharacteristic *controlPoint = [[CBMutableCharacteristic alloc] initWithType:controlPointUUID properties:CBCharacteristicPropertyWrite value:nil permissions:CBAttributePermissionsWriteEncryptionRequired];
CBUUID *dataSourceUUID = [CBUUID UUIDWithString:@"22EAC6E9-24D6-4BB5-BE44-B36ACE7C7BFB"];
CBMutableCharacteristic *dataSource = [[CBMutableCharacteristic alloc] initWithType:dataSourceUUID properties:CBCharacteristicPropertyNotifyEncryptionRequired value:nil permissions:CBAttributePermissionsReadEncryptionRequired];

// define the ANCS Service
CBUUID *ANCSUUID = [CBUUID UUIDWithString:@"7905F431-B5CE-4E99-A40F-4B1E122D00D0"];
CBMutableService *ANCS = [[CBMutableService alloc] initWithType:ANCSUUID primary:YES];
ANCS.characteristics = @[notificationSource, controlPoint, dataSource];

// define the Advertisement data
NSMutableDictionary *advertisementData = [NSMutableDictionary dictionary];
[advertisementData setValue:@"CUSTOM_ANCS" forKey:CBAdvertisementDataLocalNameKey];
[advertisementData setValue:@"7905F431-B5CE-4E99-A40F-4B1E122D00D0" forKey:CBAdvertisementDataServiceUUIDsKey];

// publish the ANCS service
[self.peripheralManager addService:ANCS];

Answer 1

作为对这个问题的迟来的回答，既然 Mavericks 出局了，这就是我们得出的结论。

我们最初在两台 iOS 设备(一台作为外围设备，一台作为中央设备)之间实现 ANCS 规范的努力没有成功。一段时间后，Apple 回复了我们(向他们的布道者致敬)并告诉我们这是不可能的。

通过将 CBPeripheralManager 类和 CBPeripheralManagerDelegate 协议(protocol)添加到嵌入在 OSX Mavericks 上的 IOBluetooth.framework 中的 CoreBluetooth.framework(深呼吸)，我们现在可以在 OSX 设备上使用 BLE radio 来实现和宣传 ANCS。

因此，此代码段属于 OSX 上的 CBPeripheralManager:

- (void) advertiseANCS
{
    NSLog(@"%s", __FUNCTION__);

    // define the ANCS Characteristics
    CBUUID *notificationSourceUUID = [CBUUID UUIDWithString:@"9FBF120D-6301-42D9-8C58-25E699A21DBD"];
    CBMutableCharacteristic *notificationSource = [[CBMutableCharacteristic alloc] initWithType:notificationSourceUUID properties:CBCharacteristicPropertyNotifyEncryptionRequired value:nil permissions:CBAttributePermissionsReadEncryptionRequired];
    CBUUID *controlPointUUID = [CBUUID UUIDWithString:@"69D1D8F3-45E1-49A8-9821-9BBDFDAAD9D9"];
    CBMutableCharacteristic *controlPoint = [[CBMutableCharacteristic alloc] initWithType:controlPointUUID properties:CBCharacteristicPropertyWrite value:nil permissions:CBAttributePermissionsWriteEncryptionRequired];
    CBUUID *dataSourceUUID = [CBUUID UUIDWithString:@"22EAC6E9-24D6-4BB5-BE44-B36ACE7C7BFB"];
    CBMutableCharacteristic *dataSource = [[CBMutableCharacteristic alloc] initWithType:dataSourceUUID properties:CBCharacteristicPropertyNotifyEncryptionRequired value:nil permissions:CBAttributePermissionsReadEncryptionRequired];

    // define the ANCS Service
    CBUUID *ANCSUUID = [CBUUID UUIDWithString:@"7905F431-B5CE-4E99-A40F-4B1E122D00D0"];
    CBMutableService *ANCS = [[CBMutableService alloc] initWithType:ANCSUUID primary:YES];
    ANCS.characteristics = @[notificationSource, controlPoint, dataSource];

    // define the Advertisement data
    NSMutableDictionary *advertisementData = [NSMutableDictionary dictionary];
    [advertisementData setValue:@"ANCS" forKey:CBAdvertisementDataLocalNameKey];
    [advertisementData setValue:@[ANCSUUID] forKey:CBAdvertisementDataServiceUUIDsKey];

    // publish the ANCS service
    [self.peripheralManager addService:ANCS];
    [self.peripheralManager startAdvertising:advertisementData];
}

鉴于此代码段属于 iOS 设备上的 CBCentralManager:

- (void) discoverANCS
{
    NSLog(@"%s", __FUNCTION__);

    NSMutableArray *services = [NSMutableArray array];
    [services addObject:@"7905F431-B5CE-4E99-A40F-4B1E122D00D0"];

    NSMutableDictionary *options = [NSMutableDictionary dictionary];
    [options setValue:[NSNumber numberWithBool:NO] forKey:CBCentralManagerScanOptionAllowDuplicatesKey];

    [self.centralManager scanForPeripheralsWithServices:services options:options];
}

iOS 设备现在可以看到并连接到 OSX radio ，它实现了 Apple 文档中详述的 ANCS 规范。

<CBCentralManager: 0x14e23280> <CBPeripheral: 0x14d27b40 identifier = 7231B80F-874E-DB5F-2AF9-7F376911E2B7, Name = "ANCS", state = disconnected> {
    kCBAdvDataChannel = 39;
    kCBAdvDataIsConnectable = 1;
    kCBAdvDataLocalName = ANCS;
} -60

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