A Simple Method to Parse JSON in Dart (Flutter)

To parse JSON in Dart or any language is simple. If you are a lazy programmer, you can generate codes for parsing JSON in any language using the following simple online tools.

Here is an example of a JSON file want to parse in my Flutter application.

{
    "audio_link":"../audio/",
    "image_link":"../image/",
    "prayer":[
       {
          "id":"1",
          "en":"Oṃ! Homage to the Buddha, Dharma and Noble Saṅgha—",
          "ro":"om, nangsi namdak rangshyin lhündrubpé"
       },
       {
          "id":"2",
          "en":"All that dwell in the auspicious realms of the ten directions,",
          "ro":"tashi chok chü shying na shyukpa yi"
       }
    ]
 }

https://app.quicktype.io/

Go to the URL given above, give a name to your parser class, insert your JSON content and the platform will generate code for you.

Given below is a screenshot of an example.

Code Generated Sample

// To parse this JSON data, do
//
//     final transLation = transLationFromJson(jsonString);

import 'dart:convert';

TransLation transLationFromJson(String str) => TransLation.fromJson(json.decode(str));

String transLationToJson(TransLation data) => json.encode(data.toJson());

class TransLation {
    TransLation({
        this.audioLink,
        this.imageLink,
        this.prayer,
    });

    String audioLink;
    String imageLink;
    List<Prayer> prayer;

    factory TransLation.fromJson(Map<String, dynamic> json) => TransLation(
        audioLink: json["audio_link"],
        imageLink: json["image_link"],
        prayer: List<Prayer>.from(json["prayer"].map((x) => Prayer.fromJson(x))),
    );

    Map<String, dynamic> toJson() => {
        "audio_link": audioLink,
        "image_link": imageLink,
        "prayer": List<dynamic>.from(prayer.map((x) => x.toJson())),
    };
}

class Prayer {
    Prayer({
        this.id,
        this.en,
        this.ro,
    });

    String id;
    String en;
    String ro;

    factory Prayer.fromJson(Map<String, dynamic> json) => Prayer(
        id: json["id"],
        en: json["en"],
        ro: json["ro"],
    );

    Map<String, dynamic> toJson() => {
        "id": id,
        "en": en,
        "ro": ro,
    };
}

Another platform you may try is https://javiercbk.github.io/json_to_dart/.