Configuraçao do database

lib/database/app_database.dart

@@ -0,0 +1,46 @@
+import 'package:byte_banck/models/contact.dart';
+import 'package:path/path.dart';
+import 'package:sqflite/sqflite.dart';
+
+Future<Database> createDatabase() {
+  return getDatabasesPath().then((dbPath) {
+    final String path = join(dbPath, 'bytebanck.db');
+    return openDatabase(path, onCreate: (database, version) {
+      database.execute(
+          'CREATE TABLE contacts( '
+              'id INTEGER PRIMARY KEY, '
+              'full_name TEXT, '
+              'account_number INTEGER)');
+    }, version: 1);
+  });
+}
+
+Future<int> save(Contact contact) {
+  return createDatabase().then((database) {
+    Map<String, dynamic> contactMap = {};
+    contactMap['full_name'] = contact.fullName;
+    contactMap['account_number'] = contact.accountNumber;
+    return database.insert('contacts', contactMap);
+  });
+}
+
+Future<List<Contact>> findAll() {
+  return createDatabase().then((database) {
+    return database.query('contacts').then((maps) {
+      {
+        List<Contact> contacts = [];
+        for (Map<String, dynamic> map in maps) {
+          contacts.add(
+            Contact(
+              map['id'],
+              map['full_name'],
+              map['account_number'],
+            ),
+          );
+        }
+        return contacts;
+      }
+    });
+  }
+  );
+}

lib/main.dart

@@ -1,9 +1,15 @@
+import 'package:byte_banck/database/app_database.dart';
 import 'package:flutter/material.dart';
 
-import 'dashboard.dart';
+import 'screans/dashboard.dart';
 
 void main() {
   runApp(const ByteBanck());
+
+  findAll().then((value) {
+    debugPrint(value.toString());
+  });
+
 }
 
 class ByteBanck extends StatelessWidget {

lib/models/contact.dart

@@ -1,14 +1,20 @@
 class Contact {
-  final String fullname;
-  final int acountNumbe;
+  final int id;
+  final String fullName;
+  final int accountNumber;
 
   Contact(
-    this.fullname,
-    this.acountNumbe,
+    this.id,
+    this.fullName,
+    this.accountNumber,
   );
 
   @override
   String toString() {
-    return 'Contact{fullname: $fullname, acountNumbe: $acountNumbe}';
+    return '\nContact: {'
+        'id: $id, '
+        'fullName: $fullName, '
+        'acountNumbe: $accountNumber'
+        '}';
   }
 }

lib/contact_form.dart → lib/screans/contact_form.dart

@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
 
-import 'models/contact.dart';
+import '../models/contact.dart';
 
 class ContactForm extends StatefulWidget {
   const ContactForm({Key? key}) : super(key: key);
@@ -61,7 +61,7 @@ class _ContactFormState extends State<ContactForm> {
                 onPressed: () {
                   final String fullName = _fullName.text;
                   final int acountNumbe = int.parse(_acountNumber.text);
-                  Navigator.of(context).pop(Contact(fullName,acountNumbe));
+                  Navigator.of(context).pop(Contact(0,fullName,acountNumbe));
                 },
                 child: const Text('Create'),
               ),

pubspec.lock

@@ -96,7 +96,7 @@ packages:
     source: hosted
     version: "1.7.0"
   path:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: path
       url: "https://pub.dartlang.org"
@@ -114,6 +114,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.8.1"
+  sqflite:
+    dependency: "direct main"
+    description:
+      name: sqflite
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.2"
+  sqflite_common:
+    dependency: transitive
+    description:
+      name: sqflite_common
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.0"
   stack_trace:
     dependency: transitive
     description:
@@ -135,6 +149,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.0"
+  synchronized:
+    dependency: transitive
+    description:
+      name: synchronized
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.0"
   term_glyph:
     dependency: transitive
     description:
@@ -165,3 +186,4 @@ packages:
     version: "2.1.1"
 sdks:
   dart: ">=2.15.1 <3.0.0"
+  flutter: ">=1.10.0"

pubspec.yaml

@@ -29,6 +29,8 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
+  sqflite:
+  path:
 
 
   # The following adds the Cupertino Icons font to your application.