我很难更改 AVCaptureVideoPreviewLayer 的边界。无论我做什么,它总是以小尺寸结束,如下所示:
这是我的代码:
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
self.imageLayer.bounds = CGRect(x: 0, y: 0, width: 375, height: 100)
}
private func startLiveVideo() {
session.sessionPreset = AVCaptureSession.Preset.photo
let captureDevice = AVCaptureDevice.default(for: AVMediaType.video)
let deviceInput = try! AVCaptureDeviceInput(device: captureDevice!)
let deviceOutput = AVCaptureVideoDataOutput()
deviceOutput.videoSettings = [kCVPixelBufferPixelFormatTypeKey as String: Int(kCVPixelFormatType_32BGRA)]
deviceOutput.setSampleBufferDelegate(self, queue: DispatchQueue.global(qos: DispatchQoS.QoSClass.default))
session.addInput(deviceInput)
session.addOutput(deviceOutput)
self.imageLayer = AVCaptureVideoPreviewLayer(session: session)
imageLayer.frame = CGRect(x: 0, y: 0, width: 375, height: 100)
self.imageView.layer.addSublayer(self.imageLayer)
session.startRunning()
}
解决方案:
self.imageLayer.videoGravity = .resizeAspectFill
最佳答案
您可以首先从 Storyboard 或通过 yourViewController 分配 imageView 的宽度和高度 500 x 500 或您想要的任何大小。
imageLayer.frame = CGRect(x: 0, y: 0, width: self.imageView.frame.width, height: self.imageView.frame.height)
self.imageView.layer.addSublayer(self.imageLayer)
关于ios - 无法为 AVCaptureVideoPreviewLayer 设置边界,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/50279227/