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86 lines
2.0 KiB
86 lines
2.0 KiB
2 years ago
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# Package
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Package can be used to organize and share a set of functions in Dart. It is simply a sharable library or modules.
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Package is similar to Dart Application except that Dart Package does not have application entry point - main.
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A minimal package consists of the following:
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- pubspec.yaml:
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A metadata file that declares the package name, version, author, etc.
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- lib:
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The lib directory contains the public code of the package, at least one .dart file.
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### Instructions:
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Create a Flutter package for your Secure Notes app. You should write
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your own package which will work with sqflite and have CRUD
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functionality.
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Your package should consist of Database.dart class and Note class which
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will allow easy access to SQLite database.
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In the end you should be able to import it like:
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```
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import 'package:note/note.dart';
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```
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### Objective:
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- Dealing with existing, large apps
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- Reusing packages across multiple apps
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- Local vs remote (git) packages
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### Database.dart
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```
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class Database {
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Database _db;
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Future create() async {
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Directory path = await getApplicationDocumentsDirectory();
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String dbPath = join(path.path, "database.db");
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_db = await openDatabase(dbPath, version: 1);
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}
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}
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```
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Example of Database class, where you should create table "Note" with 4 parameters :
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- id
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- title
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- body
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- date
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Database class should also have CRUD methods like getAllNotes, deleteAllNotes, addNote, deleteNote, updateNote.
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- getAllNotes()
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- deleteAllNotes()
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- addNote(note: Note)
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- deleteNote(note: Note)
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- updateNote(oldNote: Note, newNote: Note)
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### Note.dart
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Model class for Note object.
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```
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class Note {
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int id;
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String title;
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String body;
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String date;
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Note({
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this.id,
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this.title,
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this.body,
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this.date;
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});
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```
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### Hints:
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[https://pub.dev/packages/sqflite](https://pub.dev/packages/sqflite) [https://flutter.dev/docs/development/packages-and-plugins/developing-packages](https://flutter.dev/docs/development/packages-and-plugins/developing-packages)
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