How to access app details and write app version number into a file?

I'm trying out functionalities of Appdesigner in order to see it can handle specifications of app I'm designing.

I want my app to include possibility for writing an info file which contains version number of the app. I noticed this is located in Appdesigner in "App details".

My question is, how to access this information in order to write it into a file using a button in the app?

[Mili Goyal]

I think this MATLAB answer is very similar to what you have asked.

https://www.mathworks.com/matlabcentral/answers/572140-how-to-code-the-checking-of-the-version-of-an-app

Do check this out!

[Martti Ilvesmäki]

Thank you, I checked it out. The answer of the question is a MATLAB technical support team provided function which, if I understood correctly, works for shared apps with app installer.

I would like to however, access this information from the app itself if possible. For example, by clicking button "write info file" which would write a .txt or .csv file containing information about the app and the version number.

Answer 1

[Kishan Dhakan]

You can use the property app.<your app name>UIFigure.Name to acess the app name and write it to csv or txt using MATLAB functions in the button callback. For example, in your component browser, look for the first component under your app name, it should be the UIFigure. Use app.<thatComponent>.Name to access app name (and similar for other details like version).

[Martti Ilvesmäki]

Thank you, this works as a workaround. For example by using app.UIFigure.Tag for version number. Still though couldn't directly access App Details version number.

[Han Geerligs]

please look at https://nl.mathworks.com/matlabcentral/answers/2122976-retrieve-version-inside-appdesigner-appplication-mlapp-file#comment_3173616 for a solution

Answer 2

[Brian]

I developed the below yesterday and it has seemed to work so far.

function ver = CheckVersion(~)
    if isdeployed % If compiled and deployed
        [~, result] = system('path');
        p = char(regexpi(result, 'Path=(.*?);', 'tokens', 'once')); % Get run path
        
        myDir=dir(fullfile(p,'..','appdata','components')); % Move to components folder and get all files
        myDir=myDir(3:end); % Exclude '.' and '..'
        
        validFile=myDir(datetime({myDir.date})==max(datetime({myDir.date}))); % Only look at most recent install, includes 'common' and 'platform'
        appInfo=xml2struct(fullfile(validFile(1).folder,validFile(1).name)); % Import 'common' as struct from xml (requires xml2struct download)
        ver=appInfo.componentData.component.componentVersion.Text; % Grab the version number as a char array
    else
        fullpath=mfilename('fullpath'); % Get run path
        s=settings;
        
        if ~isempty(strfind(fullpath,s.matlab.addons.InstallationFolder.ActiveValue)) % If the run path includes the addons install folder, it is run from the app bar
            [p,~]=fileparts(fullpath); % Get the path
            
            if isfolder(fullfile(p,'resources'))
                xmlLocation=fullfile(p,'resources','addons_core.xml'); % Go to resources folder
                appInfo=xml2struct(xmlLocation); % Import addons_core.xml as struct
                ver=appInfo.addonCore.version.Text; % Grab the version number as a char array
            else
                ver='debug'; % This may be redundant with below. Left in to prevent errors just in case...
            end
        else % If run from MATLAB mlapp file
            ver='debug';
        end
    end
end

[Francisco Sacchetti]

this does not work for webbapp server

[Han Geerligs]

Does anyone know how to retrieve the version of an .mlapp file?

This property is available on top level of the GUI, in picture below it is 1.02. I'd like to display it in a text label.

[Francisco Sacchetti]

https://www.mathworks.com/matlabcentral/answers/732433-how-to-get-sharing-details-in-app-designer

this may work for you