Packaged app error R2018b?

I packaged an app I know works and I get this error...works fine normally.

Error using getappdata

Value must be a handle.

Error in AftModV2App/attachOncleanupToFigure (line 109)

appdata = getappdata(fig);

Error in AftModV2App/startApp (line 94)

obj.attachOncleanupToFigure(appdesigner.internal.service.AppManagementService.getFigure(obj.AppHandle));

Error in AftModV2App (line 48)

startApp(obj)

Error in appinstall.internal.runapp>execute (line 116)

out = evalin('caller', [script ';']);

Error in appinstall.internal.runapp>runapp13a (line 95)

outobj = execute(fullfile(appinstalldir, [wrapperfile 'App.m']));

Error in appinstall.internal.runapp>preamble18b (line 60)

appobj = runapp13a(appinstalldir);

Error in appinstall.internal.runapp (line 13)

out = preamble18b(appinstalldir);

Error in matlab.apputil.run (line 45)

appinstall.internal.runapp(appName, appLocation);

[Adam]

Impossible to say much with only that information other than that when something works within Matlab, but not in a compiled app it is, more often than not, because you have forgotten to include a (or multiple) file in the app.

Answer 1

[Paul Smith]

This line:-

appdesigner.internal.service.AppManagementService.getFigure(obj.AppHandle)

returns a null value here in code:-

if(ishandle(obj.AppHandle))

% Traditional graphics handle based app

obj.attachOncleanupToFigure(obj.AppHandle);

elseif isa(obj.AppHandle, 'matlab.apps.AppBase')

% appdesigner based app

obj.attachOncleanupToFigure(appdesigner.internal.service.AppManagementService.getFigure(obj.AppHandle));

elseif isa(obj.AppHandle,'handle') && ~isvalid(obj.AppHandle)

% Cleanup in the case where the handle was invalidated before here

appinstall.internal.stopapp([],[],obj)

else

% There will be no call to stopapp, instead decrease the refcount

% now to prevent future clearing issues

AftModV2App.refcount(obj.Increment);

munlock;

end

obj.AppHandle is not empty.