如何在json响应中获取特定数据

Question

我使用Http请求获取数据，输出是通过传递api的json响应。

输出：

`[{"id":23908,"attributes":{"batteryLevel":69.0,"distance":0.29,"totalDistance":74804.18,"motion":false},
"deviceId":5,"type":null,"protocol":"osmand",
"serverTime":"2018-04-18T12:08:02.814+0000",
"deviceTime":"2018-04-18T12:08:06.000+0000",
"fixTime":"2018-04-18T12:08:06.000+0000",
"outdated":false,
"valid":true,"latitude":12.79057744,"longitude":77.85007493,"altitude":771.0,
"speed":0.0,"course":0.0,"address":null,"accuracy":0.0,"network":null}]`

现在我只需要特殊的数据作为json响应，例如：只有作为json响应的lattitude我怎样才能实现它。