Communicate an error with the APP

Question

Vasista Adupa 2020-8-15

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/579816-communicate-an-error-with-the-app

回答： Walter Roberson 2020-8-15

I have created an app in app designer. It works well, but the only problem is stopping the app when an error occur. I have to run a function file from the app, so when there is an error in that function file, the information should be communicated with the app, so that the app can be stopped. Is there any way to do it.

Thank you.

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Vasista Adupa 2020-8-15

在 MATLAB Online 中打开

Thank you that works great. But I didn't get "have the function file error()". Please elaborate. For now I am using this.

Try
Functionfilecalling
Catch
Error('error occured')
end

Vasista Adupa 2020-8-15

在 MATLAB Online 中打开

Got it. Thank you.

Try
Functionfilecalling
Catch ME
rethrow(ME);
end

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Answer 1

Walter Roberson 2020-8-15

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/579816-communicate-an-error-with-the-app#answer_480207

在 MATLAB Online 中打开

try
  Functionfilecalling
catch ME
    rethrow(ME);
end
function Functionfilecalling
   %example of something that generates an error
   [status, attr] = fileattrib(pwd);
   if ~status || attrib.UserWrite ~= 1
       error('You cannot write to the current directory');
   end
   %no error, do something
   fprintf('The rain in Spain is mainly in the plains.\n')
end