在Android CameraX拍照前如何保证对焦？(应该是一个非常常用的特性！)

val preview = Preview.Builder().build()

val imageCapture = ImageCapture.Builder().build()

val cameraSelector = CameraSelector.DEFAULT_BACK_CAMERA

val cameraControl = CameraControl.DEFAULT_CONTROL

val point = SurfaceOrientedMeteringPointFactory(x.toFloat(), y.toFloat(), viewFinder.width.toFloat(), viewFinder.height.toFloat(), rotationDegrees.toFloat())
val action = FocusMeteringAction.Builder(point, FocusMeteringAction.FLAG_AF)
    .addPoint(point, FocusMeteringAction.FLAG_AE)
    .build()

cameraControl.startFocusAndMetering(action)

imageCapture.takePicture(executor, object : ImageCapture.OnImageCapturedCallback() {
    override fun onCaptureSuccess(image: ImageProxy) {
        // 处理拍照成功后的逻辑
    }

    override fun onError(exception: ImageCaptureException) {
        // 处理拍照失败后的逻辑
    }
})