sqflite SQLite plugin for Flutter. Supports both iOS and Android.

path_provider A Flutter plugin for finding commonly used locations on the filesystem. Supports iOS and Android.

http A composable, Future-based library for making HTTP requests.

dependencies:

  sqflite: ^1.1.3
  path_provider: ^0.5.0
  http: ^0.12.0+1

Not Finished ;(

Not Finished ;(

Not Finished ;(

Wraps NSUserDefaults (on iOS) and SharedPreferences (on Android), providing a persistent store for simple data.

Add the dependencies: shared_preferences: ^0.5.1+2. Import: import 'package:shared_preferences/shared_preferences.dart';

SharedPreferences sharedPreferences;

  save() async {
    sharedPreferences = await SharedPreferences.getInstance();
    setState(() {
      sharedPreferences.set<Type>(<key>, <TextEditingController>.text);
    });
  }

  load() async {
    sharedPreferences = await SharedPreferences.getInstance();
    setState(() {
      <TextEditingController>.text = sharedPreferences.getString(<key>);
    });
  }

• Use a TextEditingController variable to get the input from TextField.
• Use the controller atribute to assing that varibale.

Checkout this exemple.

Sarting by define our database, check the Helper file:

note: CM will be the class object that you want to add into your DB e.g: Note ...

CM class should use private properties:

class CM {

  int _id;
  <Type> _<prop>;

  // Ctor
  CM(this._<prop>);

  CM.withId(this._id, this.<prop>);

  //Getters
  int get id => _id;
  String get <prop> => _<prop>;

  //Setters
  set <prop>(<Type> <arg>) {
      this.<prop> = <arg>;
  }


  // Convert a CM object into a Map object
  Map<String, dynamic> toMap() {

    var map = Map<String, dynamic>();
    if (id != null) {
      map['id'] = _id;
    }
    map['<prop>'] = _<prop>;

    return map;
  }

  // Extract a CM object from a Map object
  CM.fromMapObject(Map<String, dynamic> map) {
    this._id = map['id'];
    this._<prop> = map['<prop>'];
  }
}

Not Finished ;(

Not Finished ;(

Not Finished ;(

• Goto Firebase make a project, enable test mode.
• In Database make a Collection sample.
• In Project Overview, Add Firebase to your Android app. In you working dir goto android\app\src\main\AndroidManifest.xml file, then copy the package name and use it in Andoid Package Name.
• Download the config file and palce it in android\app.
• Follow the instruction.
• In Project Overview, Add Firebase to your IOS app. In you working dir goto android\app\src\main\AndroidManifest.xml file, then copy the package name and use it in Andoid Package Name.
• Download the config file and palce it in ios\runner.
• Skip all
• goto pubspec.yaml file and add cloud_firestore: ^0.9.13+1 under dependencies.

In order to use the firebase in your app add the import 'package:cloud_firestore/cloud_firestore.dart';.

To be able to do the CRUD on your database, you need to make a variable that will control it.

DocumentReference documentReference = Firestore.instance.collection("<collection-name>").document('document-name');

• Create

Map<String, dynamic> <var> = {
      <feild_name>: <val>,
    };

documentReference.setData(<var>); //silent

documentReference.setData(<var>).whenComplete((){
	<todo_when_created>;
});

• Read

documentReference.get().then((datasnapshot){
	datasnapshot.data[<feild_name>]; //value of <feild_name>
});

• Update

//same as Create

• Delete

documentReference.delete(); //silent

documentReference.delete().whenComplete((){
	<todo_when_deleted>;
});

Snippet that show all db documents:

StreamBuilder(
  stream: Firestore.instance.collection("<collection_name>").snapshots(),
  builder: (context, snapshot) {
    return ListView.builder(
      shrinkWrap: true,
      itemCount: snapshot.data.documents.length,
      itemBuilder: (context, i) {
        DocumentSnapshot ds = snapshot.data.documents[i];
        return Row(
          children: <Widget>[
            Expanded(
              child: Text(ds["<feild_name>"].toString()),
            ),
          ],
        );
      },
    );
  },
),

Checkout this exemple.

Setup download function:

Future<File> _downloadFile(String url, String filename) async {
  var request = await httpClient.getUrl(Uri.parse(url));
  var response = await request.close();
  var bytes = await consolidateHttpClientResponseBytes(response);
  String dir = (await getApplicationDocumentsDirectory()).path;
  File file = new File('/storage/emulated/0/Download/$filename');
  await file.writeAsBytes(bytes);
  return file;
}

Call the download function:

_downloadFile('<url>','<filename>');

in pubspec.yaml add the json file under the assert (in this example the file is under data/msg.json )

var messages = const [];

Future setMessages() async {
  var content = await rootBundle.loadString('data/msg.json');
  var collection = json.decode(content);
  setState(() {
    messages = collection;
  });
}

void initState(){
  setMessages();
  super.initState();
}

in pubspec.yaml under dev_dependencies add http: ^0.12.0+2. You can get the json using http request

//To Change
http.Response response =
    await http.get("http://www.mocky.io/v2/5d543d652f00002b008614f0");
String content = response.body;

note: You can use mocky for testing purpose.

It provides Dart Build System builders for handling JSON, The builders generate code when they find members annotated with classes defined in package:json_annotation.

in pubspec.yaml add:

dependencies:
  json_annotation: ^2.0.0

dev_dependencies:
  build_runner: ^1.0.0
  json_serializable: ^2.0.0

Make a Model for json data:

import 'package:json_annotation/json_annotation.dart';

part 'message.g.dart';

@JsonSerializable()
class Message{
  final String title;
  final String body;

  Message(this.title, this.body);

  factory Message.fromJson(Map<String, dynamic> json) =>
    _$MessageFromJson(json);
}

Run flutter pub run build_runner build.

Do some modification in previous code:

//To Add
List<Message> _msg = collection.map((json)=>Message.fromJson(json)).toList();

//To Change
setState(() {
  messages = _msg;
});

• set schema:

type Person {
   id: String!
   name: String!
   lastName: String!
   age: String!
}

type Query {
   allPersons: [Person!]
}

• add dependancies

  graphql_flutter: ^3.0.0
  http: ^0.12.0+4

• Get this example.

code explanation:

• Set the Class that is compatible with the schema.
• Set the queries in QueryMutation class, you can run examples on the dashboard to make sure that you have a correct syntax.