reading export data from list instead of gridview

timokz · Nov 4, 2021 · 9403ac4 · 9403ac4
1 parent 2bd919c
commit 9403ac4
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Showing 4 changed files with 50 additions and 26 deletions.
diff --git a/lib/get_guest_data.dart b/lib/get_guest_data.dart
@@ -1,18 +1,18 @@
+import 'dart:html';
+import 'package:intl/intl.dart';
+import 'package:syncfusion_flutter_pdf/pdf.dart';
 import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:flutter/material.dart';
 import 'guest.dart';
 import 'guest_data_source.dart';
 import 'package:syncfusion_flutter_datagrid/datagrid.dart';
 import 'package:syncfusion_flutter_datagrid_export/export.dart';
 import 'dart:convert';
+
 // ignore: avoid_web_libraries_in_flutter
-//import 'dart:html';
-import 'dart:io';
 import 'package:syncfusion_flutter_xlsio/xlsio.dart'
     hide Alignment, Column, Row;
 
-import 'home.dart';
-
 class GetGuestData extends StatefulWidget {
   const GetGuestData({Key? key}) : super(key: key);
 
@@ -75,15 +75,45 @@ class _GetGuestDataState extends State<GetGuestData> {
             guestList.add(g.data() as Guest);
           }
 
+          List<ExcelDataRow> _buildReportDataRows() {
+            List<ExcelDataRow> excelDataRows = <ExcelDataRow>[];
+
+            excelDataRows = guestList.map<ExcelDataRow>((Guest e) {
+              return ExcelDataRow(cells: <ExcelDataCell>[
+                ExcelDataCell(columnHeader: 'name', value: e.nName),
+                ExcelDataCell(columnHeader: 'name', value: e.vName),
+                ExcelDataCell(columnHeader: 'location', value: e.location),
+                ExcelDataCell(
+                    columnHeader: 'Entry Time',
+                    value:
+                    DateFormat('yyyy-MM-dd – kk:mm').format(e.entryTime)),
+                ExcelDataCell(columnHeader: 'email', value: e.email),
+                ExcelDataCell(columnHeader: 'phone', value: e.phone),
+              ]);
+            }).toList();
+
+            return excelDataRows;
+          }
 
           Future<void> exportDataGridToExcel() async {
+            //  final Workbook workbook = _key.currentState!.exportToExcelWorkbook();
+
+            //  final List<int> bytes = workbook.saveAsStream();
+            // File('DataGrid.xlsx').writeAsBytes(bytes, flush: true);
             final Workbook workbook = Workbook();
-            final Worksheet worksheet = workbook.worksheets[0];
-            _key.currentState!.exportToExcelWorksheet(worksheet);
+            final Worksheet sheet = workbook.worksheets[0];
+            sheet.importList(guestList, 1, 1, true);
+            final List<ExcelDataRow> dataRows = _buildReportDataRows();
+            sheet.importData(dataRows, 1, 1);
             final List<int> bytes = workbook.saveAsStream();
-            File('DataGrid.xlsx').writeAsBytes(bytes, flush: true);
-          }
+            workbook.dispose();
 
+            AnchorElement(
+                href:
+                    "data:application/octet-stream;charset=utf-16le;base64,${base64.encode(bytes)}")
+              ..setAttribute("download", "GuestData.xlsx")
+              ..click();
+          }
 
           return Scaffold(
               backgroundColor: const Color(0xffffffff),
@@ -94,8 +124,7 @@ class _GetGuestDataState extends State<GetGuestData> {
                 actions: <Widget>[
                   IconButton(
                       icon: const Icon(Icons.download_rounded),
-                      onPressed: ()  => exportDataGridToExcel()
-                      ),
+                      onPressed: () => exportDataGridToExcel()),
                   //     IconButton(
                   //     onPressed: exportDataGridToExcel,
                   //         icon: const Icon(Icons.airplane_ticket))

diff --git a/lib/guest.dart b/lib/guest.dart
@@ -1,6 +1,5 @@
 import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:flutter/cupertino.dart';
-import 'package:phone_number/phone_number.dart';
 
 @immutable
 class Guest {

diff --git a/lib/home.dart b/lib/home.dart
@@ -78,7 +78,7 @@ class _HomeScreenState extends State<HomeScreen> {
                               child:
                                   SnackBar(content: Text("Falsches Passwort")))
                       },
-                  child: Text("Check")), //    Center(child:),
+                  child: const Text("Check")), //    Center(child:),
             ],
           )),
       // This trailing comma makes auto-formatting nicer for build methods.

diff --git a/lib/main.dart b/lib/main.dart
@@ -24,8 +24,6 @@ class _AppState extends State<App> {
   bool _error = false;
   final Future<FirebaseApp> _initialization = Firebase.initializeApp();
 
-
-
   @override
   void initState() {
     initializeFlutterFire();
@@ -61,19 +59,17 @@ class _AppState extends State<App> {
         }
 // Once complete, show your application
         if (snapshot.connectionState == ConnectionState.done) {
-          print("made it to pos connection ");
-
           return MaterialApp(
-            title: 'tqwcoviddata',
-            theme: ThemeData(
-              primaryColor: Colors.black,
-              backgroundColor: const Color(0xffffffff),
-              fontFamily: 'Roboto',
-            ),
-            home: HomeScreen()//HomeScreen(),
-
-            //    home: const HomeScreen());
-          );
+              title: 'tqwcoviddata',
+              theme: ThemeData(
+                primaryColor: Colors.black,
+                backgroundColor: const Color(0xffffffff),
+                fontFamily: 'Roboto',
+              ),
+              home: HomeScreen() //HomeScreen(),
+//home: GetGuestData(),
+              //    home: const HomeScreen());
+              );
         }
 // Otherwise, show something whilst waiting for initialization to complete
         return const CircularProgressIndicator(