Java – how to deserialize JSON arrays using gson

I want to use gson to deserialize a JSON array I tried to do it, but I couldn't

JSON array:

[
    {"ID":1,"Title":"Lion","Description":"bla bla","ImageURL":"http:\/\/localhost\/lion.jpg"},{"ID":1,"Title":"Tiger","ImageURL":"http:\/\/localhost\/tiger.jpg"}
]

I get JSON arrays from PHP scripts:

$array = array (
    array ( 'ID' => 1,'Title' => 'Lion','Description' => 'bla bla','ImageURL' => 'http:\/\/localhost\/lion.jpg' ),array ( 'ID' => 2,'Title' => 'Tiger','ImageURL' => 'http:\/\/localhost\/tiger.jpg' ),);
echo json_encode ($array);

Solution

To deserialize jsonarray, you need to use typetoken You can read more information from the gson user guide Example code:

@Test
public void JSON() {
    Gson gson = new Gson();
    Type listType = new TypeToken<List<MyObject>>(){}.getType();
    // In this test code i just shove the JSON here as string.
    List<Asd> asd = gson.fromJson("[{'name':\"test1\"},{'name':\"test2\"}]",listType);
}

If you have a jsonarray, you can use it

...
JSONArray jsonArray = ...
gson.fromJson(jsonArray.toString(),listType);
...