[{"name":"free","version":"1.1","id":""},{"name":"love","version":"2.2","id":""}]

public class MainActivity extends Activity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

    }

    protected void myClick(View v){

        if( v.getId() == R.id.btn ){

            getJson();

        }

    }

    protected void getJson(){

        OkHttpClient http = new OkHttpClient.Builder()

                .connectTimeout(, TimeUnit.SECONDS)

                .readTimeout(, TimeUnit.SECONDS)

                .build();

        final Request request = new Request.Builder()

                .url("http://192.168.2.100:8001/a.php")

                .build();

        Call call = http.newCall(request);

        call.enqueue(new Callback() {

            @Override

            public void onFailure(Call call, IOException e) {

            }

            @Override

            public void onResponse(Call call, Response response) throws IOException {

                parseJson(response.body().string());

            }

        });

    }

    protected void parseJson(String jsonStr){

        try{

            JSONArray jsonArray = new JSONArray(jsonStr);

            for(int i=;i<jsonArray.length();i++){

                JSONObject jsonObject = jsonArray.getJSONObject(i);

                String id = jsonObject.getString("id");

                String name = jsonObject.getString("name");

                String version = jsonObject.getString("version");

                Log.e("data", id + " | " + name + "|" + version);

            }

        }catch (Exception e){

            e.printStackTrace();

        }

    }

}