我会保存一个子图层。但我无法达到目标。 我想保存包含摄像机视图的屏幕上显示的图层。当我想要它时,我得到一个白色的图像。我得出结论,当我记录dernnière功能时,我将我的男性图层作为目标。 这是我的代码:
@IBOutlet weak var blutEffect: UIVisualEffectView!
@IBOutlet weak var background: UIView! // vu d'affichage
var previewLayer = AVCaptureVideoPreviewLayer()
var captureSession = AVCaptureSession()
override func viewDidLoad() {
super.viewDidLoad()
camera()
}
@IBAction func takePhoto(sender: AnyObject) {
captureSession.stopRunning()
}
func camera () {
captureSession = AVCaptureSession()
previewLayer = AVCaptureVideoPreviewLayer()
var captureDevice : AVCaptureDevice?
let devices = AVCaptureDevice.devices()
captureSession.sessionPreset = AVCaptureSessionPresetHigh
background.layer.sublayers?.removeAll()
for device in devices {
if (device.hasMediaType(AVMediaTypeVideo)) {
if(device.position == AVCaptureDevicePosition.Back) {
captureDevice = device as? AVCaptureDevice
if captureDevice != nil {
do {
try captureSession.addInput(AVCaptureDeviceInput(device: captureDevice))
} catch _ as NSError {
print("ERROR")
}
previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
self.background.layer.addSublayer(previewLayer)
previewLayer.frame = self.background.layer.frame
captureSession.startRunning()
}
}
}
}
}
func screenShotMethod() {
UIGraphicsBeginImageContext(background.layer.frame.size)
background.layer.renderInContext(UIGraphicsGetCurrentContext())
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
//Save it to the camera roll
UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil)
}
感谢您的帮助!