CODEWITHSUNDEEP
matlabmatlab-app-designer
Z.Lun
Z.Lun

Reputation: 305

MatLab 2023a App Designer stuck when opening a .mlapp file created by 2024a

it seems like .mlapp not compatiable or has changed since version 2023a and I am not sure what kind of promblem it is.

.mlapp seems to be a Matlab-specific format, not a normal text format, which makes it impossible for me to copy it to other computers (running different versions of Matlab) at will.

Is there any information about compatibility between APP designer versions? I cannot accept the incompatibility of "source code (in binary format)".

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Upvotes: 2

Views: 44

Answers (1)

sentiment
sentiment

Reputation: 136

MLAPP files provide forward-compatibility, but don't guarantee backward-compatibility. New functionality has been added to App Designer in basically every release since it was introduced, and new functionality will inherently not work in older versions of Matlab.

If you want to ensure you can use an MLAPP file in multiple different versions of Matlab, it needs to be compatible with the oldest version that you intend to use.

To achieve that, you can either (1) create the app in the old version of Matlab or (2) open it in the version it was created in, and use "save as" to save it for compatibility with the old version. You must make sure the app does not use any functionality not supported in the old version (for example, if it uses uitree then you can't use it with any version prior to 2017b).

https://www.mathworks.com/help/matlab/creating_guis/compatibility-between-different-releases-of-app-designer.html

https://www.matlabsolutions.com/resources/will-my-app-designer-app-be-compatible-in-previous-and-future-releases-.php

As others indicated in comments, MLAPP files are effectively ZIP files with various content inside, similar to Microsoft Word DOCX files. But that doesn't really affect your problem.

Upvotes: 1

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