Gson convert JSON to list object

Gson - convert from Json to a typed ArrayList

You may use TypeToken to load the json string into a custom object.

logs = gson.fromJson(br, new TypeToken>(){}.getType());

Documentation:

Represents a generic type T.
Java doesn't yet provide a way to represent generic types, so this class does. Forces clients to create a subclass of this class which enables retrieval the type information even at runtime.
For example, to create a type literal for List, you can create an empty anonymous inner class:

TypeToken> list = new TypeToken>() {};
This syntax cannot be used to create type literals that have wildcard parameters, such as Class or List.

Kotlin:

If you need to do it in Kotlin you can do it like this:

val myType = object : TypeToken>() {}.type val logs = gson.fromJson>(br, myType)

Or you can see this answer for various alternatives.

Your JSON sample is:

{ "status": "ok", "comment": "", "result": { "id": 276, "firstName": "mohamed", "lastName": "hussien", "players": [ "player 1", "player 2", "player 3", "player 4", "player 5" ] }

so if you want to save arraylist of modules in your SharedPrefrences so :

1- will convert your returned arraylist for json format using this method

public static String toJson(Object jsonObject) { return new Gson().toJson(jsonObject); }

2- Save it in shared prefreneces

PreferencesUtils.getInstance(context).setString("players", toJson((.....ArrayList you want to convert.....)));

3- to retrieve it at any time get JsonString from Shared preferences like that

String playersString= PreferencesUtils.getInstance(this).getString("players");

4- convert it again to array list

public static Object fromJson(String jsonString, Type type) { return new Gson().fromJson(jsonString, type); } ArrayList playersList= (ArrayList) fromJson(playersString, new TypeToken>() { }.getType());

this solution also doable if you want to parse ArrayList of Objects Hope it's help you by using Gson Library .

If you want to use Arrays, it's pretty simple.

logs = gson.fromJson(br, JsonLog[].class); // line 6

Provide the JsonLog as an array JsonLog[].class

Gson convert JSON to list object

Gson - convert from Json to a typed ArrayList

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