Setting up a notifier and listener in two different apps

% I have a mainApp built in AppDesigner. It calls another app that displays data from main app in a number of different plots. I would like the

% user to click on one of these plots, in this case UIAxes and the coordinates are sent back to the mainApp. How do I setup a listener in the

% mainApp for a notifier that is fired in the display app? I have tried the setup below, but once the startupFcn is finished the instance of the

% listener is destroyed.

classdef mainApp

events

dataFromDisplayApp

end

methods (Access=private)

function startupFcn(app)

listener(app, 'dataFromDisplayApp', @doSomethingAsResultOfDataFromDisplayApp

end

function doSomethingAsResultOfDataFromDisplayApp (app)

disp('Done something')

end

function userWantsAPlotButtonPushed(app, event)

displayApp(mainApp)

end

classdef displayApp

methods (Access=private)

function startupFcn (app, caller)

app.myMainApp = caller;

end

function UIAxesButtonDown(app, event)

notify(app.mainApp, 'dataFromDisplayApp')

end

Answer 1

[chrisw23]

The "displayApp" has to provide the 'dataFromDisplay' event and the mainApp can add the listener.

app.myDisplayApp = displayApp(mainApp); % create the app object

app.liDispApp = addlistener(app.myDisplayApp,"dataFromDisplayApp",@app.dataFromDisplayApp_Callback); % register event

[Scorp]

Thank you!