How to access camera flash on UIImagePickerController?

Question

I would like to know how to switch on the camera flash on the iPhone 4 with UIImagePickerController.

if ([UIImagePickerController isSourceTypeAvailable:UIImagePi         


        

Answer 1

// not all devices have two cameras or a flash so just check here
    if ( [UIImagePickerController isCameraDeviceAvailable: UIImagePickerControllerCameraDeviceRear] ) {
        imagePicker.cameraDevice = UIImagePickerControllerCameraDeviceRear;
        if ( [UIImagePickerController isCameraDeviceAvailable: UIImagePickerControllerCameraDeviceFront] ) {
            cameraSelectionButton.alpha = 1.0;
            showCameraSelection = YES;
        }
    } else {
        imagePicker.cameraDevice = UIImagePickerControllerCameraDeviceFront;
    }

    // flash mode on
      if ([UIImagePickerController isFlashAvailableForCameraDevice:imagePicker.cameraDevice] )
       {
            imagePicker.cameraFlashMode = UIImagePickerControllerCameraFlashModeOff;
            flashModeButton.alpha = 1.0;
            showFlashMode = YES;
        }