Hello again!
a new day - new issues... :-(
I have to admit, I am going to get really frustrated. You always have a learning curve, when you are working with a new framework, but SAPUI is a really tough one (close second was/is Spring 
, a bit better after Spring boot).
I do not know how much time I invested to rewrite a js-example in a XML view. I am really not sure if it is the right approach to give the user millions of ways to do a thing. But enough complaining.
The problem today is how to attach a controller to a fragment. Pretty easy achievable in js, example: DialogTest/initial.controller.js at master · njames/DialogTest · GitHub
I am doing exactly that for my dialogs. But now I have a fragment, which will be shown directly at startup in the view.
Normally I have something like this:
<mvc:View xmlns:core="sap.ui.core" xmlns:mvc="sap.ui.core.mvc" xmlns="sap.m" controllerName="ViewController">
<Page>
<content>
<core:Fragment fragmentName="superView" type="XML" />
</content>
</Page>
</mvc:View>
But how to pass a controller in this case? 'superView' needs its own controller.
Of course, I could place it using the afterRendering Method of the view.
But this is not the way it should work...
Hope you can help me again!
Thanks a lot and best regards
Ben