org.json.JSONArray cannot be cast to double[]

Question

model:

public class Geometry { public String type; public List<Position> coordinatesRoute; public double[] coordinatesPoint; method for recover jsonObjet JSONObject objectResponse = new JSONObject(res); JSONArray JarrayFeatures = objectResponse.getJSONArray("features"); for (int i = 0; i < JarrayFeatures.length(); i++) { JSONObject jsonObjFeatures = JarrayFeatures.getJSONObject(i); Log.e("jsonObjFeatures:", " " + jsonObjFeatures); //geoFeatures.setType((String) jsonObjFeatures.get("type")); features.setType((String) jsonObjFeatures.get("type")); JSONObject objectGeometry = jsonObjFeatures.getJSONObject("geometry"); geometry.setType((String) objectGeometry.get("type")); Log.e("objectGeometry:", "" + objectGeometry); //problems geometry.setCoordinatesPoint((double[]) objectGeometry.get("coordinates"));

JSON:

"features": [ { "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 2.1163, 48.8288 ] },

I am trying to recover the value coordinates of my json which is a double array. Thank you for your help.

As the error says, your get call returns a JSONArray. You can't cast this directly to double [] so you'll have to iterate over the array yourself and cast each item to a double. — Ian Newson
– Ian Newson, Commented Nov 15, 2019 at 10:58
@m pierre You must confirm and vote to the answer that was sent earlier! — zahra salmaninejad
– zahra salmaninejad, Commented Nov 16, 2019 at 11:14

mohammadReza Abiri · Accepted Answer · 2019-11-15 11:44:51Z

coordinates is a JSONArray in your JSON , so you cannot cast it to double!

 geometry.setCoordinatesPoint(objectGeometry.getJSONArray("coordinates").getDouble(0),objectGeometry.getJSONArray("coordinates").getDouble(1));

Vikas Rai · Accepted Answer · 2019-11-15 11:21:46Z

You're trying to cast jsonArray to Double. Use this geometry.setCoordinatesPoint(objectGeometry.getJSONArray("coordinates").getDouble(0),objectGeometry.getJSONArray("coordinates").getDouble(1));

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