Matlab App Designer Save Button Unresponsive

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George Barrass 2021-2-16

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/746822-matlab-app-designer-save-button-unresponsive

评论： George Barrass 2021-2-16

I am a student using Matlab App Designer (r2019a) for my final year university project and recently I have been running into a few problems, I cannot find a solution online so I am hoping somebody on here has experience with this.

I am in the process of creating an app and it is currently sat at 20,000 lines. This means that my laptop is unfortunately not powerful enough to use to continue creating code (it takes over 10 minutes sometimes to run the app from within app designer and even longer to load app designer itself) - so I am now trying to use university computers (note my laptop is Mac and the university computers windows). I used to be able to run through remote desktop on my laptop and it would work without any issues, however this is now not an option.

When I open App Designer through a university computer (whether that be in person or on remote desktop), the app will not save.

When I press to save work, nothing happens and the * indicating unsaved changes never goes away, no matter how long I wait for. I do not receive any error codes and cannot cancel by using Ctrl+C.

This also means I cannot run the app through app designer - as it saves before running. I now know that this is not a problem with running the app as I can run it through the command window without any issues, just with no saved changes.

I have tried several things, including increasing java heap memory, running on a local network (it currently runs through onedrive), checking the profiler etc; all of which do not solve the problem.

I do not think it is an issue with Mac vs Windows, as it used to work without any issues when remote desktop was used from my laptop previously (before I essentially returned to office).

Has anyone had this issue before? Has anyone resolved this type of issue before?

Thanks in advance.

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Mario Malic 2021-2-16

在 MATLAB Online 中打开

Yep, most likely it's the RAM.

Just a note, I am working on the app for 6 months or so, and I have 3k lines in App Designer, and few k outside of it. I wonder if you have an issue of duplicating components or if you actually need that many components. You can check this in App Designer yourself, without unzipping file like explained below.

Before going further, WARNING: do not to edit anything in the file.

First, copy your app to some other folder so you don't mess up your original file. What you'll do is to unzip the file into the new folder.

Find and open

\matlab\document.xml

Here's the example of duplicate components

        Test1EditField                  matlab.ui.control.NumericEditField
        WidthEditFieldLabel             matlab.ui.control.Label
        WidthEditField                  matlab.ui.control.NumericEditField
        DoesnotapplyCheckBox_14         matlab.ui.control.CheckBox
        DoesnotapplyCheckBox_15         matlab.ui.control.CheckBox
        RowEditFieldLabel               matlab.ui.control.Label
        RowEditField                    matlab.ui.control.EditField
        TestLabel                       matlab.ui.control.Label
        DeckDropDown_5Label             matlab.ui.control.Label
        DeckDropDown_5                  matlab.ui.control.DropDown
        DeckDropDown_3                  matlab.ui.control.DropDown
        DeckDropDown_3                  matlab.ui.control.DropDown

See this double DeckDropDown_3, there are plenty of those down the file, usually when you copy and paste the components, they should have the different number, just like these two checkboxes with 14 and 15. The components do not have to be in order, you may see them at some other place down the list.

Mario Malic 2021-2-16

I would suggest to go for latest version if available. This post says that there have been massive improvements from 2020a.

App Designer apps are forward (dont know about backward) compatible between the versions, the first time you launch an app in the new version there will be updating process to the new version.

Good luck on your project!

George Barrass 2021-2-16