Gaurav192

Use File instead of File.fromUri

2

Fixes #19 File.fromUri throws UnsupportedError if file doesn't exist

## What feature would you like to see? With #12085, FirebaseAnalyticsObserver can log route.arguments since logScreenView allows to log arguments unlike setCurrentScreen. https://github.com/firebase/flutterfire/blob/8f49afcb802481f498455e1b9b759427673f4ee8/packages/firebase_analytics/firebase_analytics/lib/observer.dart#L86 can be changed to `analytics.logScreenView(screenName: screenName,parameters:route.arguments)`