MATLAB: File path issues with custom app installation

appdesignerappinstallerMATLABMATLAB Compiler

I installed a custom app using a mlappinstaller file. The app installed by default to "Documents\MATLAB\Add-Ons\Apps". The app was packaged with images that are used as icons for buttons. When I start up the app and don't have that folder specified as my current folder, the app doesn't find these images and throws an error. Is it possible to install the app in a way where this error does not happen? Should the code be written to always reference this folder? In that case it would seem that the file path would be different for anyone that installs the app. Let me know if this is unclear.

Best Answer

Are you using fullfile() to specify the complete path of the images? See my attached utility to get the actual folder where the executable is.

Also see the FAQ http://matlab.wikia.com/wiki/FAQ#Why_can.27t_my_standalone_compiled_executable_find_my_files.3F

Related Solutions

MATLAB: Is “which” function not getting compiled in standalone application of App designer

Instead of using 'fullfile(cd,'which_test.mat'))' manually add it to 'files required in the compiler' when creating the standalone app.

Also please make the following changes in your code:

a=which('which_test.mat');
uialert(app.UIFigure, a, 'path')

The compiler creates an archive of files needed for the application. These files are automatically added to the path for the EXE, This is not the same as the MATLAB path, so files not added at compile time will not be accessible unless specified by the user at runtime ( "uigetfile"), or if the location is hard coded. In the current case, "which" function is looking for files, not on the deployed EXE's path, so the app will not be able to access them.

MATLAB: Current App Installation Folder

One way:

files = matlab.apputil.getInstalledAppInfo;
[path,~,~] = fileparts(files(1).location)

Best Answer

Related Solutions

MATLAB: Is “which” function not getting compiled in standalone application of App designer

MATLAB: Current App Installation Folder

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