Getting Xpath from uiautomator in windows for hybrid app when only class name is present in node details

Screen

Node details in uiautomatorviewer

I want to locate the Username edit textfield.

1.Use index and class field together for creating xpath
2.Instantiate object of UISelector class and use it to find xpath

Refer-http://qxf2.com/blog/identify-ui-elements-mobile-apps/