camera

    private void TryOpenCamera()
        {
            if((int) Build.VERSION.SdkInt < 23)
            {
                dispatchTakePictureIntent();
                return;
            }
             GetCameraPermission();
        }

        private void GetCameraPermission()
        {
            const string permission = Manifest.Permission.WriteExternalStorage;
            if (CheckSelfPermission(permission) == (int)Permission.Granted)
            {
                 dispatchTakePictureIntent();
                return;
            }

            if (ShouldShowRequestPermissionRationale(permission))
            {
                //// Explain to the user why we need this permission
                //Snackbar.Make(layout, "Camera access is required to take profile ", Snackbar.LengthIndefinite)
                //    .SetAction("Ok", v => RequestPermissions(CameraPermissions, RequestCameraId))
                //    .Show();
                return;
            }
        }