Question 1

How do I set up BLE state restoration with SwiftyBluetooth?

Accepted Answer

Call `setSharedCentralInstanceWith(restoreIdentifier:)` in your AppDelegate's `didFinishLaunchingWithOptions`, then observe `CentralManagerWillRestoreStateNotification` on NotificationCenter to handle restored peripherals. This wraps CoreBluetooth's state preservation into a simpler API.

Question 2

Is SwiftyBluetooth production-ready?

Accepted Answer

Yes, it's used in various apps and provides stable APIs with detailed error handling. However, test thoroughly with your specific BLE devices, as the abstraction might hide edge cases that require custom CoreBluetooth tweaks.

Question 3

SwiftyBluetooth vs CoreBluetooth: which should I use?

Accepted Answer

Use SwiftyBluetooth if you prefer a cleaner, closure-based API and don't need low-level delegate control. Stick with raw CoreBluetooth for full customization, support for iOS versions below 10.0, or if you're already deeply invested in its delegate patterns.

Question 4

How to scan for specific BLE devices using SwiftyBluetooth?

Accepted Answer

Use `scanForPeripherals(withServiceUUIDs:timeoutAfter:callback:)` and pass an array of service UUIDs to filter devices. The callback provides peripheral results via `.scanResult` cases, and you can handle them directly in the closure.

Question 5

Can I use SwiftyBluetooth with SwiftUI?

Accepted Answer

Yes, but you'll need to bridge the closure-based calls to SwiftUI's state management, often using Combine or ObservableObject. It's not natively integrated, so expect some boilerplate for binding BLE events to UI updates.

Question 6

What are common errors in SwiftyBluetooth and how to fix them?

Accepted Answer

Common errors include connection timeouts and service discovery failures. Ensure your BLE device is in range, UUIDs are correct, and handle errors in the closure callbacks—retrying operations or checking device compatibility as needed.

SwiftyBluetooth

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