One thing that you could do is to have an HTML event that requests focus on the input element whenever the startup function of the app finishes:
function startupFcn(app)
app.HTML.HTMLSource = 'usernameInput.html';
% Maybe you need a drawnow() here, but I have tried without it and it
% worked
app.HTML.Data.FocusOnInput = true;
end
In your .html file you will just need to add a listener in the setup function:
htmlComponent.addEventListener("DataChanged", function(evt) {
if (evt.Data.FocusOnInput){
document.getElementById("usernameInput").focus();
}
})
I don't have matlab 2021b (only 2021a, and it behaves the same as 2020b), but I have tried running my code without the "autofocus" property in the <input> and it worked. Hopefully it also works in the 2021b! Let me know how it goes :)
