What is a rootView?

Question

Hello I\'m new in Android and I\'ve opened a project with the default template Master detail flow but I don\'t know what is a rootView. I\'

Answer 1

Elements displayed are organized in tree hierarchy. For example if you put Button in Linear Layout container, then LinearLayout is parent for said Button. The top-most parent which got nothing "above" is "root". Same applies for i.e. folders and files - you get parent folder and there's also root folder - at the very top of the hierarchy