JSON to Mobile Code: Generate Swift, Kotlin & Dart Classes

Mobile development often involves parsing JSON from APIs. Our generators create native models for iOS (Swift), Android (Kotlin), and Flutter (Dart) with proper serialization support.

Swift (iOS/macOS)

Generate Codable structs that work directly with JSONDecoder and JSONEncoder.

struct User: Codable {
    let id: Int
    let name: String
    let email: String
}

// Usage
let user = try JSONDecoder().decode(User.self, from: data)

→ Try JSON to Swift

Kotlin (Android)

Generate data classes with val properties that work with Gson, Moshi, or kotlinx.serialization.

data class User(
    val id: Int,
    val name: String,
    val email: String
)

// Usage with Gson
val user = Gson().fromJson(json, User::class.java)

→ Try JSON to Kotlin

Dart (Flutter)

Generate Dart classes with fromJson factory constructors for seamless Flutter integration.

class User {
  final int id;
  final String name;
  final String email;

  User({required this.id, required this.name, required this.email});

  factory User.fromJson(Map<String, dynamic> json) {
    return User(
      id: json['id'],
      name: json['name'],
      email: json['email'],
    );
  }
}

→ Try JSON to Dart

Comparison

Best Practices

• Use sample API responses that include all possible fields
• Add null handling for optional fields after generation
• Consider using code generation libraries for production apps
• Test with edge cases (empty arrays, null values)