https://github.com/expo/expo/issues/886
you can use pausePreview and resumePreview to do this now - see https://docs.expo.io/versions/v28.0.0/sdk/camera#pausepreview
you can use pausePreview and resumePreview to do this now - see https://docs.expo.io/versions/v28.0.0/sdk/camera#pausepreview