UIImagePickerController自定義FlashMode按鈕在IOS 10上不起作用（Swift）

Question

我知道已經問過這種類型的問題，但我對其進行了詳細的調試，我得出的結論是，當我關閉此標志時

   self.picker.showsCameraControls = false

那么自定義閃光燈按鈕不會響應，但是如果我將標志更改為

   self.picker.showsCameraControls = true

然后我的自定義閃光燈按鈕響應正常，我已經檢查了所有委托和標志，但是我無法指出該錯誤，無論是在我的代碼中還是在IOS 10版本中，如果在我的代碼中然后在顯示相機上控制我的自定義閃光燈按鈕為何更改閃光燈狀態並可以正常工作。 這是我的代碼，可以更好地理解：

   func configureImagePicker(){
         self.picker.delegate = self
         self.picker.allowsEditing = false
        if       UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera)
    {
        self.picker.sourceType = UIImagePickerControllerSourceType.Camera
        self.picker.mediaTypes = [kUTTypeImage as String]
    }
}

  func showImagePicker(){
    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera){

        self.picker.sourceType = UIImagePickerControllerSourceType.Camera
        self.picker.showsCameraControls = false
        self.picker.delegateController = self
        self.picker.delegate = self
        self.picker.mediaTypes = [kUTTypeImage as String]
        self.picker.allowsEditing = false


        if let cameraOverlay = self.picker.cameraOverlayView {

            self.createCamerOverlay(cameraOverlay.frame)
            self.picker.cameraOverlayView = self.overlayView


            self.presentViewController(self.picker, animated: false, completion: {
                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(Double(0.5)*Double(NSEC_PER_SEC))), dispatch_get_main_queue(), {
                    if self.picker.cameraDevice == UIImagePickerControllerCameraDevice.Rear && UIImagePickerController.isFlashAvailableForCameraDevice(UIImagePickerControllerCameraDevice.Rear)
                    {
                        if Float.init(UIDevice.currentDevice().systemVersion) < 11.0
                        {
                            switch(Global.shared.currenFlashOption)
                            {
                                case .FlashOff:
                                    self.picker.cameraFlashMode = .Off
                                    let flashImage = UIImage(named: "btn-flash-off")
                                    self.flashButton.setImage(flashImage, forState: UIControlState.Normal)
                                    self.flashButton.setImage(flashImage, forState: UIControlState.Highlighted)
                                case .FlashAuto:
                                    self.picker.cameraFlashMode = .Auto
                                    let flashImage = UIImage(named: "btn-flash")
                                    self.flashButton.setImage(flashImage, forState: UIControlState.Normal)
                                    self.flashButton.setImage(flashImage, forState: UIControlState.Highlighted)
                                case .FlashOn:
                                    self.picker.cameraFlashMode = .On
                                    let flashImage = UIImage(named: "btn-flash-on")
                                    self.flashButton.setImage(flashImage, forState: UIControlState.Normal)
                                    self.flashButton.setImage(flashImage, forState: UIControlState.Highlighted)
                            }
                        }
                        else
                        {
                            self.picker.cameraFlashMode = UIImagePickerControllerCameraFlashMode.On

                        }
                    }
                });
            });

        } else {
            print("Camera overlay frame not found. So did not present the controller.")
        }
    }
    else{
        let alert = UIAlertView(title: "Error", message: "Camera Not Available", delegate: nil, cancelButtonTitle: "Cancel")
        alert.show()
    }
}

簡而言之，我的自定義閃光模式按鈕不適用於cameraoverlayview。 如果沒有解決此問題的方法，請提出任何建議。 謝謝

Answer 1

我已經用笨拙的技巧解決了我的問題，

 self.picker.showsCameraControls = true
 self.picker.cameraFlashMode = .On
 self.picker.showsCameraControls = false

它足夠快，不會干擾用戶的顯示和隱藏控件。 有效！