fix: Fix invalid userPreferredCameraDevice (#3068)

* fix: Fix invalid `userPreferredCameraDevice`

* fix: Use `.default` API instead

package/ios/React/CameraDevicesManager.swift

@@ -63,16 +63,28 @@ final class CameraDevicesManager: RCTEventEmitter {
  }
 
  private func getPreferredDevice() -> AVCaptureDevice? {
- #if swift(>=5.9)
- if #available(iOS 17.0, *) {
- if let userPreferred = AVCaptureDevice.userPreferredCamera {
- // Return the device that was explicitly marked as a preferred camera by the user
- return userPreferred
+ if #available(iOS 17.0, *) {
+ if let userPreferred = AVCaptureDevice.userPreferredCamera {
+ guard !userPreferred.uniqueID.isEmpty else {
+ // Due to an iOS 17 bug, Simulators return a non-nil AVCaptureDevice here,
+ // but all properties on this AVCaptureDevice are 0x0/empty/invalid.
+ // So we catch this bug and return a nil preferred device here.
+ return nil
  }
+ // Return the device that was explicitly marked as a preferred camera by the user
+ return userPreferred
  }
- #endif
- // Just return the first device
- return discoverySession.devices.first
+ }
+ // Usually prefer the wide angle back camera
+ if let defaultBackWideAngle = AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .back) {
+ return defaultBackWideAngle
+ }
+ // Fall back to the default video
+ if let defaultVideo = AVCaptureDevice.default(for: .video) {
+ return defaultVideo
+ }
+ // Return nil because apparently we couldn't find a default
+ return nil
  }
 
  private static func getAllDeviceTypes() -> [AVCaptureDevice.DeviceType] {