Device control opens the APP camera and enters the photo preview function

Note: After receiving this command, the app must call the following event to reply the camera preview start result when entering the camera preview successfully or failed

Flutter example:

/// Reply to the camera preview start result
replyDeviceStartCameraPreviewRequest(
evtBase: _VBusEvtBase.base_app_set,
evtType: _VBusEvtType.app_ble_to_app_start_camera_preview)

/// Reply to the camera preview start result
libManager.send(evt: CmdEvtType.replyDeviceStartCameraPreviewRequest, json: jsonEncode(json));

JSON fields sent by the App:

Example:

{
"error_code":0x00
}