Class methods for UI callbacks cannot access attributes defines after callback

Question

Akshayaa Pandiyan 2023-6-20

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1985939-class-methods-for-ui-callbacks-cannot-access-attributes-defines-after-callback

回答： Akshayaa Pandiyan 2023-6-20

Hi, I have an uifig defined as a class and its callbacks as private methods for browing through a folder list. However, during the callback I found that the all the attributes that comes after the calling back ui is set to empty.

Example code

classdef myUI
    properties 
        ddArray = cell(1,8);
        uiFig;
    end
    methods (Access = private)
         function changeSelection(self, src, ~)
             idx = %find the index of the src in ddArray
             %for example if the idx = 4
             % self.ddArray{5:8} is empty
         end
    end
    methods
        %%constructor
        function self = myUI(varargin)
            <initalise self.uifig>
            for ii = 1:8
                self.ddArray{ii} = uidropdown(self.uifig, ...
                        'ValueChangedFcn', @self.changeSelection);
            end
        end
            
    end
end