在 class 中設置 CoreBluetooth peripheral.delegate

Question

我正在嘗試從 CoreBluetooth 外圍設備發現服務等，但我遇到了一個問題，因為peripheral.delegate = self （正如我在每個教程中看到的那樣）試圖將 peripheral.delegate 設置為父 BluetoothHandler object .

我的相關代碼是：

class BluetoothHandler: NSObject, ObservableObject, CBCentralManagerDelegate {
  func centralManager (_ central: CBCentralManager, didConnect peripheral: CBPeripheral {
    peripheral.delegate = self // Cannot assign value of type BluetoothHandler to CBPeripheralDelegate?
    peripheral.discoverServices(nil)
  }
}

Answer 1

那是因為您的BluetoothHandler不符合正確的委托協議，即CBPeripheralDelegate代替或補充CBCentralManagerDelegate 。

另請注意，您通常應該保持連接的外圍設備，例如：

class BluetoothHandler: NSObject, ObservableObject, CBPeripheralDelegate {
    
    var connectedPeripheral: CBPeripheral?
    
    func centralManager (_ central: CBCentralManager, didConnect peripheral: CBPeripheral) {
        
        connectedPeripheral = peripheral
        
        connectedPeripheral?.delegate = self
        
        connectedPeripheral?.discoverServices(nil)
    }
    
}