点击聚焦和曝光不起作用

Question

一段时间以来，我一直在尝试进行点击对焦，实际上我已经尝试了所有方法，但 none 似乎对我有用。以下是我的 touchesBegan 中的内容，但它不起作用。它应该但它不是。我究竟做错了什么？

var newFocusPoint = CGPoint(x: touchPoint.locationInView(cameraView).x / screenSize.width, y: touchPoint.locationInView(cameraView).y / screenSize.height)

    if let cameraDevice = device {
        if(cameraDevice.lockForConfiguration(nil)) {
            if cameraDevice.focusPointOfInterestSupported {
                cameraDevice.focusPointOfInterest = newFocusPoint
                cameraDevice.focusMode = AVCaptureFocusMode.ContinuousAutoFocus
            }
            if cameraDevice.exposurePointOfInterestSupported {
                cameraDevice.exposurePointOfInterest = newFocusPoint
                cameraDevice.exposureMode = AVCaptureExposureMode.ContinuousAutoExposure
            }
            cameraDevice.unlockForConfiguration()
        }
    }

Answer 1

You made minor mistakes in your code, the lines below should fix it.

 cameraDevice.focusPointOfInterest = focusPoint
 cameraDevice.focusMode = AVCaptureFocusMode.AutoFocus
 cameraDevice.exposurePointOfInterest = focusPoint
 cameraDevice.exposureMode = AVCaptureExposureMode.ContinuousAutoExposure

点击聚焦和曝光不起作用

Tap To Focus And Exposure Doesn't Work

iphone

camera

avfoundation

ios

swift