Why is app designer not opening?

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Joshua Welsh
Joshua Welsh 2016-11-25
评论： Alexander 2023-3-26
I am unable to open app designer. I am running Mac OS Sierra with MATLAB 2016b. When I click on opening a new app designer script a MATLAB window icon appears in my dock, but a window does not appear.
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Muhammad Asif
Muhammad Asif 2020-4-20
Unfortunatly Elliot Wolf solution doesn't work for me
Kajal Srivastava
Kajal Srivastava 2020-5-12
I am having the same problem in R2018b on my windows device

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采纳的回答

StephenJ
StephenJ 2017-1-16
I was having the exact same problem (2016b, OS Sierra), which appeared when I had entered full-screen mode while connected to projector. In MATLAB click on new app designer script or open existing mlapp file, icon should appear in the dock. Then Menu->Enter full screen, app designer will show up, if not, swipe on your trackpad until designer window pops out, then reset it by closing MATLAB Window from the top menu. Worked in my case. Btw I tried changing the matlabpref.mat as suggested by Sean, it did not work itself, but there still might be a correlation with my solution as I didn't change the setting back.
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Monika Jaskolka
Monika Jaskolka 2021-3-10
编辑：Monika Jaskolka 2021-3-10
I had this issue on Windows 10. This answer worked for me.
I hovered over the problematic window in the dock, right-clicked on it, and selected Maximize.

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更多回答（4 个）

Ron Fredericks
Ron Fredericks 2022-3-21
Monika Jaskolka's comment within the question worked for me:
Windows 10:
  • Hover over the MATLAB icon in the task bar - wait for windows to show, including the missing app designer window,
  • Right-click on app designer window, and select Maximize.
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Patrick
Patrick 2022-7-28
I found that deleted the MATLAB preferences folder resets everything and it works properly now.

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Xulai Xu
Xulai Xu 2016-11-26
Someone please answer this I encountered the same problem. Tried everything, nothing worked
Sean de Wolski
Sean de Wolski 2016-11-28
cd(prefdir)
load('matlabprefs.mat')
What are the settings in
Preferences.appdesigner
They should look something like this
ans =
struct with fields:
ShowIntroDialog: 0
Position: [1 1 112 0]
Maximized: 1
ShowCodeViewTips: 0
ShowCompatibilityDialog: 0
If not: Try, changing Maximized to true or Position to something like mine above, save back to matlabprefs.mat and restart MATLAB.
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Eric Delgado
Eric Delgado 2021-8-6
Different ways to handle this issue:
  • Update Windows 10 version
  • Update graphics driver
Alexander
Alexander 2023-3-26
>> cd(prefdir)
load('matlabprefs.mat')
>> Preferences.appdesigner
Unrecognized field name "appdesigner"
I have the same issue of blank screen on startup

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Shehzad Ahmed
Shehzad Ahmed 2022-6-3
hello,
my appdesigner is not working anymore. I need help for my projekt.
I keep getting this error-code.
please Help.
Ich brauche Hilfe beim Öfnnen des AppDesigners.
dieser Fehler wird mir immer angezeigt.

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