Now, it's time to create the layout file and bind it to the AllowanceOverviewPresenter class. A data-bound layout file is a little different from a normal Android layout. As each layout XML file results in its own binding class, they have a root element of layout, followed by a data section that declares the variables that they will bind to. Each variable is named and typed with its Java class, because during compilation, these are all turned into Java variables in a generated binding class. Ultimately, you want to create a layout that will look like this at the top of the overview screen:
The Daily Allowance ...