moshi

Moshi
=====

Moshi is a modern JSON library for Android, Java and Kotlin. It makes it easy to parse JSON into Java and Kotlin
classes:

_Note: The Kotlin examples of this README assume use of either Kotlin code gen or `KotlinJsonAdapterFactory` for reflection. Plain Java-based reflection is unsupported on Kotlin classes._

<details>
  <summary>Java</summary>

```java
String json = ...;

Moshi moshi = new Moshi.Builder().build();
JsonAdapter<BlackjackHand> jsonAdapter = moshi.adapter(BlackjackHand.class);

BlackjackHand blackjackHand = jsonAdapter.fromJson(json);
System.out.println(blackjackHand);
```
</details>

<details open>
  <summary>Kotlin</summary>

```kotlin
val json: String = ...

val moshi: Moshi = Moshi.Builder().build()
val jsonAdapter: JsonAdapter<BlackjackHand> = moshi.adapter<BlackjackHand>()

val blackjackHand = jsonAdapter.fromJson(json)
println(blackjackHand)
```
</details>

And it can just as easily serialize Java or Kotlin objects as JSON:

<details>
    <summary>Java</summary>

```java
BlackjackHand blackjackHand = new BlackjackHand(
    new Card('6', SPADES),
    Arrays.asList(new Card('4', CLUBS), new Card('A', HEARTS)));

Moshi moshi = new Moshi.Builder().build();
JsonAdapter<BlackjackHand> jsonAdapter = moshi.adapter(BlackjackHand.class);

String json = jsonAdapter.toJson(blackjackHand);
System.out.println(json);
```
</details>

<details open>
    <summary>Kotlin</summary>

```kotlin
val blackjackHand = BlackjackHand(
    Card('6', SPADES),
    listOf(Card('4', CLUBS), Card('A', HEARTS))
  )

val moshi: Moshi = Moshi.Builder().build()
val jsonAdapter: JsonAdapter<BlackjackHand> = moshi.adapter<BlackjackHand>()

val json: String = jsonAdapter.toJson(blackjackHand)
println(json)
```
</details>

### Built-in Type Adapters

Moshi has built-in support for reading and writing Java’s core data types:

 * Primitives (int, float, char...) and their boxed counterparts (Integer, Float, Character...).
 * Arrays, Collections, Lists, Sets, and Maps
 * Strings
 * Enums

It supports your model classes by writing them out field-by-field. In the example above Moshi uses
these classes:

<details>
    <summary>Java</summary>

```java
class BlackjackHand {
  public final Card hidden_card;
  public final List<Card> visible_cards;
  ...
}

class Card {
  public final char rank;
  public final Suit suit;
  ...
}

enum Suit {
  CLUBS, DIAMONDS, HEARTS, SPADES;
}
```
</details>

<details open>
    <summary>Kotlin</summary>

```kotlin
class BlackjackHand(
  val hidden_card: Card,
  val visible_cards: List<Card>,
  ...
)

class Card(
  val rank: Char,
  val suit: Suit
  ...
)

enum class Suit {
  CLUBS, DIAMONDS, HEARTS, SPADES;
}
```
</details>


to read and write this JSON:

```json
{
  "hidden_card": {
    "rank": "6",
    "suit": "SPADES"
  },
  "visible_cards": [
    {
      "rank": "4",
      "suit": "CLUBS"
    },
    {
      "rank": "A",
      "suit": "HEARTS"
    }
  ]
}
```

The [Javadoc][javadoc] catalogs the complete Moshi API, which we e