// 扫码调用客户端的扫码模块scancode 
// @param scanPrams 扫码参数字典 
// @param navigationController 从哪个页面呼起vc
// @param completionHandler 回调结果 
- (void)scanCode:(NSDictionary *)scanPrams
navigationController:(UINavigationController *)navigationController
completionHandler:(MACommonCallback)completionHandler;