当该类的另一个函数正在运行时监听事件？

Question

我的班级看起来像：

classdef linescan99 < handle
 methods
        function obj = linescan99(obj_watcher)
           addlistener(obj_watcher,'Contact',@obj.handleEvnt);
        end
        function follower(obj)
            while 1
                %computations
            end
        end
    end
end

我注意到，当跟随者功能执行时，班级无法收听可能发生的事件“联系”。不幸的是：这个事件会导致一个循环中断跟随者功能......

你知道如何强制该功能听取这个事件吗？也许在循环中？

非常感谢

........

classdef watcher < handle
   properties
       State = false
   end
   events
      Contact
   end
   methods
      function OnStateChange(obj,newState)
         if newState ~= obj.State
            obj.State = newState;
            notify(obj,'Contact');
         end
      end
      function follower(obj)
          while 1
              data=inputSingleScan(sessions_daq.NI_USB_1);
              if data>3
                  obj.OnStateChange(true)
              else
                  obj.OnStateChange(false)
              end
          end
      end
   end
end

和

classdef linescan99 < handle
    properties
        cam=videoinput('gige');
        %several properties used in the function "follower"...
        State = false
        State2
    end
    methods

        function obj = linescan99(obj_watcher)
           addlistener(obj_watcher,'Contact',@obj.handleEvnt);
        end
        function handleEvnt(obj,obj_watcher,~)
           if obj_watcher.State %contact
              disp('linescan lancé')
              obj.State2=true;
              obj.suiveur
           else
               obj.State2=false;
           end
        end

        function follower(obj)
            preview(obj.cam)
            while 1
                image_camera=getsnapshot(obj.cam);
                %computations...           
                if obj.State2
                else
                    break %my goal is to break this while 1 loop when obj_watcher sends 
                          %an event to obj_linscan99 which leads to: obj.State2=0
                end                
           end
        end 

    end
end