How to get front camera, back camera and audio with AVCaptureDeviceDiscoverySession
Solution 1:
You can get the front camera with the following:
AVCaptureDevice.default(.builtInWideAngleCamera, for: AVMediaType.video, position: .front)
The back camera:
AVCaptureDevice.default(.builtInWideAngleCamera, for: AVMediaType.video, position: .back)
And the microphone:
AVCaptureDevice.default(.builtInMicrophone, for: AVMediaType.audio, position: .unspecified)
Solution 2:
Here's my code (Swift 3) to get camera position :
// Find a camera with the specified AVCaptureDevicePosition, returning nil if one is not found
func cameraWithPosition(_ position: AVCaptureDevicePosition) -> AVCaptureDevice?
{
if let deviceDescoverySession = AVCaptureDeviceDiscoverySession.init(deviceTypes: [AVCaptureDeviceType.builtInWideAngleCamera],
mediaType: AVMediaTypeVideo,
position: AVCaptureDevicePosition.unspecified) {
for device in deviceDescoverySession.devices {
if device.position == position {
return device
}
}
}
return nil
}
If you want, you can also get the new devicesTypes from iPhone 7+ (dual camera) by changing the deviceTypes array.
Here's a good read : https://forums.developer.apple.com/thread/63347
Solution 3:
Swift 4, iOS 10+ and Xcode 10.1 replaces
if let cameraID = AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .front)?.localizedName {
//cameraID = "Front Camera"
}
with AVCaptureDevice.DiscoverySession implementation
if let cameraID = AVCaptureDevice.DiscoverySession.init(deviceTypes: [AVCaptureDevice.DeviceType.builtInWideAngleCamera], mediaType: .video, position: .front).devices.first?.localizedName{
//cameraID = "Front Camera"
}
Need to wrap it with #available(iOS 10,*) check.
Solution 4:
It works on Xcode 9.2 and Swift 4
AVCaptureDevice.default(.builtInWideAngleCamera, for: AVMediaType.video, position: .back)
https://developer.apple.com/documentation/avfoundation/avcapturedevice/2361508-default
Solution 5:
Swift 3
For selecting the back camera:(also you can change .back as needed)
For selecting another deviceType simple add it inside the [ ] (i.e:
[deviceTypeCamera, AVCaptureDeviceType.builtInMicrophone]
(or create a private let... like I did in the code with the back camera)
private let position = AVCaptureDevicePosition.back
private let deviceTypeBackCamera = AVCaptureDeviceType.builtInWideAngleCamera
private func selectCaptureDevice() -> AVCaptureDevice? {
return AVCaptureDeviceDiscoverySession(deviceTypes: [deviceTypeBackCamera], mediaType: AVMediaTypeVideo, position: position).devices.first
}