Added TypeConverters sample.

example/lib/database.dart

@@ -2,12 +2,14 @@ import 'dart:async';
 
 import 'package:example/task.dart';
 import 'package:example/task_dao.dart';
+import 'package:example/type_converter.dart';
 import 'package:floor/floor.dart';
 import 'package:sqflite/sqflite.dart' as sqflite;
 
 part 'database.g.dart';
 
 @Database(version: 1, entities: [Task])
+@TypeConverters([DateTimeConverter])
 abstract class FlutterDatabase extends FloorDatabase {
   TaskDao get taskDao;
 }

example/lib/main.dart

@@ -107,12 +107,9 @@ class TaskListCell extends StatelessWidget {
       key: Key('${task.hashCode}'),
       background: Container(color: Colors.red),
       direction: DismissDirection.endToStart,
-      child: Padding(
-        padding: const EdgeInsets.symmetric(
-          vertical: 8,
-          horizontal: 16,
-        ),
-        child: Text(task.message),
+      child: ListTile(
+        leading: Text(task.message),
+        trailing: Text(task.timestamp.toIso8601String()),
       ),
       onDismissed: (_) async {
         await dao.deleteTask(task);
@@ -134,7 +131,7 @@ class TasksTextField extends StatelessWidget {
   TasksTextField({
     Key? key,
     required this.dao,
-  })   : _textEditingController = TextEditingController(),
+  })  : _textEditingController = TextEditingController(),
         super(key: key);
 
   @override
@@ -177,7 +174,7 @@ class TasksTextField extends StatelessWidget {
     if (message.trim().isEmpty) {
       _textEditingController.clear();
     } else {
-      final task = Task(null, message);
+      final task = Task(null, message, DateTime.now());
       await dao.insertTask(task);
       _textEditingController.clear();
     }

example/lib/task.dart

@@ -7,21 +7,24 @@ class Task {
 
   final String message;
 
-  Task(this.id, this.message);
+  final DateTime timestamp;
+
+  Task(this.id, this.message, this.timestamp);
 
   @override
   bool operator ==(Object other) =>
       identical(this, other) ||
       other is Task &&
           runtimeType == other.runtimeType &&
           id == other.id &&
-          message == other.message;
+          message == other.message &&
+          timestamp == other.timestamp;
 
   @override
-  int get hashCode => id.hashCode ^ message.hashCode;
+  int get hashCode => id.hashCode ^ message.hashCode ^ timestamp.hashCode;
 
   @override
   String toString() {
-    return 'Task{id: $id, message: $message}';
+    return 'Task{id: $id, message: $message, timestamp: $timestamp}';
   }
 }

example/lib/type_converter.dart

@@ -0,0 +1,13 @@
+import 'package:floor/floor.dart';
+
+class DateTimeConverter extends TypeConverter<DateTime, int> {
+  @override
+  DateTime decode(int databaseValue) {
+    return DateTime.fromMillisecondsSinceEpoch(databaseValue);
+  }
+
+  @override
+  int encode(DateTime value) {
+    return value.millisecondsSinceEpoch;
+  }
+}