Get no of infected people due to current date

lib/EAnalyzer/SearchEvent.dart

 // import 'dart:convert';
 // import 'dart:html';
+import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:intl/date_symbol_data_local.dart';
 import 'dart:convert';
 import 'dart:ffi';
@@ -9,6 +10,7 @@ import 'package:flutter/material.dart';
 // import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:http/http.dart' as http;
 import 'package:quiver/testing/time.dart';
+import 'package:intl/intl.dart';
 
 
 class SearchEvent extends StatefulWidget {
@@ -26,6 +28,8 @@ class _SearchEventState extends State<SearchEvent> {
   String noOfPeople;
   int ima;
 
+  
+
   //final List<String> dist = ['ampara', 'anuradhapura', 'badulla', 'batticaloa','colombo','galle','gampaha','hambantota','jaffna','kalmunai','kalutara','kandy','kegalle','kilinochchi','kurunagala','mannar','matale','matara','monaragala','mullaitivu','nuwara eliya','polonnaruwa','puttalam','ratnapura','trincomalee','vavuniya'];
 
   var finalRisk = 'rrrr';
@@ -33,9 +37,9 @@ class _SearchEventState extends State<SearchEvent> {
   var tcVisibility = false;
 
   DateTime now = new DateTime.now();
-  Duration dur = new Duration(days: 1);
+  // Duration dur = new Duration(days: 1);
 
-  //var yesterday = now.subtract(const Duration(days: 1));
+  // var yesterday = now.subtract(const Duration(days: 1));
   // var formatterDate = new DateFormat('dd');
   // var formatterMonth = new DateFormat('MM');
   // var formatterYear = new DateFormat('yyyy');
@@ -75,6 +79,39 @@ class _SearchEventState extends State<SearchEvent> {
     this.noOfPeople= noOfPeople;
   }
 
+  getNumberOfcases(String district) async{
+    DateTime now = new DateTime.now();
+  //Duration dur = new Duration(days: 1);
+
+  var yesterday = now.subtract(const Duration(days: 1));
+  // String year = yesterday.year.toString();
+  // String month = yesterday.month.toString();
+  // String date = yesterday.day.toString();
+  String formattedDate = new DateFormat('yyyy-MM-dd').format(yesterday);
+// // String riskLevelDocument = location + '_' + formattedDate;
+//   // var formatterDate = new DateFormat('dd');
+//   // var formatterMonth = new DateFormat('MM');
+//   // var formatterYear = new DateFormat('yyyy');
+//   // String date = formatterDate.format(yesterday); 
+//   // String month = formatterMonth.format(yesterday);
+  //  String year = formatterYear.format(yesterday);
+
+  String riskLevelDocument = district +  '_' + formattedDate;
+//   var a = Firestore.instance.collection('RiskLevel').document(riskLevelDocument)
+// .get().then(function(Document) =>
+//       print(Document("cases"));
+// );
+
+DocumentSnapshot  querySnapshot = await Firestore.instance.collection("RiskLevel").document(riskLevelDocument).get();
+Map<String, dynamic> data = querySnapshot.data();
+// val = querySnapshot.documents.length;
+//  var val = data['cases'];
+  // String riskLevelDocument = location + finalDate;
+  this.noOfInfected = data['cases'];
+  print(noOfInfected);
+  // return data['cases'].toString();
+  }
+
 
   final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
 
@@ -157,6 +194,7 @@ Widget _buildDistrict(){
     },
     onChanged: (String district){
       getDistrict(district);
+     getNumberOfcases(district);
     },
   );
 }
@@ -189,7 +227,14 @@ Widget _buildNoOfInfected(){
     // },
     onChanged: (String noOfInfected){
       getInfected(noOfInfected);
+      // DocumentReference documentReference = Firestore.instance.collection('RiskLevel').document('district');
+      // print(documentReference);
     },
+
+    // Firestore.instance.collection('COLLECTION').document('ID').get().then((DocumentSnapshot) =>
+    //       print(DocumentSnapshot.data['key'].toString());
+    // );
+
   );
 }
 
@@ -295,7 +340,7 @@ Future<void> check() async{
   print(reText);  
   tcVisibility = true;
   print('$now');
-  print(now.subtract(dur));
+  //print(now.subtract(dur));
 
 }