使用Android Volley从网站上获取一组对象?不是一个数组

So in the course I am currently taking I'm being required to use Android Volley to access https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/2.5_day.geojson">this and parse them in an app so I can stick them in a textview. So in the course I am currently taking I'm bein