使用 CoreBluetooth 檢測 Apple Watch

Question

我在 iPhone 上發現了使用 Core Bluetooth 的藍牙設備，但它無法連接 Apple Watch。 有什么我想念的嗎？ 這是我在下面使用的代碼：

#pragma mark - CBCentralManagerDelegate

// method called whenever you have successfully connected to the BLE peripheral
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral
{
}

// CBCentralManagerDelegate - This is called with the CBPeripheral class as its main input parameter. This contains most of the information there is to know about a BLE peripheral.
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI
{     NSLog(@"%@", [peripheral name]);
}


// method called whenever the device state changes.
- (void)centralManagerDidUpdateState:(CBCentralManager *)central
{
switch ([central state])
{
    case CBCentralManagerStatePoweredOff:
        NSLog(@"CoreBluetooth BLE hardware is powered off");
        break;
    case CBCentralManagerStatePoweredOn:
        NSLog(@"CoreBluetooth BLE hardware is powered on and ready");
        [[self bluetoothManager] scanForPeripheralsWithServices:nil options:nil];
        break;
    case CBCentralManagerStateResetting:
        NSLog(@"CoreBluetooth BLE hardware is resetting");
        break;
    case CBCentralManagerStateUnauthorized:
        NSLog(@"CoreBluetooth BLE state is unauthorized");
        break;
    case CBCentralManagerStateUnknown:
        NSLog(@"CoreBluetooth BLE state is unknown");
        break;
    case CBCentralManagerStateUnsupported:
        NSLog(@"CoreBluetooth BLE hardware is unsupported on this platform");
        break;
    default:
        break;
}
}

Answer 1

當我運行以下代碼時，我的 Apple Watch 就會出現：

[self.centralManager retrieveConnectedPeripheralsWithServices:@[[CBUUID UUIDWithString:@"180A"]]];

180A是設備信息服務。

不確定您可以發現和訂閱哪些特征（如果有），但您絕對可以檢測到手表的存在。

Answer 2

你不使用 Core Bluetooth 連接到 Apple Watch 你使用另一個稱為連接的框架

https://developer.apple.com/documentation/watchconnectivity/using_watch_connectivity_to_communicate_between_your_apple_watch_app_and_iphone_app