I am looking for a way to add a textview value to strings.xml file
I am not sure if this is possible,
I tried this code but it shows it as it is and it doesnt shows the value:
<string name="result">tvtxt1.getText()</string>
Ressources files xml like strings.xml can only be use for read only you cannot set values dynamically, you can see it like a final variable
When you provide a data as a Resource, it can't be modified during run time. This applies to Strings.xml, Drawables, Values etc.. You should consider to create a separate class and have your strings placed in this Class and access them.
I suggest to use a ViewModel, you can save your strings inside of it and you can be sure that you will not loose them when your view will be recreated for some reason