问题
I am trying to get a JSONArray from a server but getting all kinds of errors. EDIT : tried adding all these imports.
import android.support.v7.app.AppCompatActivity;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.Response.Listener;
import com.android.volley.NetworkResponse;
import com.android.volley.ParseError;
import com.android.volley.toolbox.JsonArrayRequest;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.Volley;
import com.android.volley.Response.ErrorListener;
public class VolleyFetcher extends AppCompatActivity
{
RequestQueue queue = Volley.newRequestQueue(this);
String url = "https://xxxxxx.json";
JsonObjectRequest jsObjRequest = new JsonObjectRequest(
Request.Method.GET, url, null, new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
// TODO Auto-generated method stub
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error)
{
// TODO Auto-generated method stub
}
});
queue.add(jsObjRequest);
}
My errors:
Response cannot be resolved to a type
JSONArray cannot be resolved to a type
Syntax error on token "jsObjRequest", VariableDeclaratorId expected after this token (//line : queue.add(jsObjRequest)
Any advice would be very much appreciated.
回答1:
JSONObjectRequest should be used if the result returned is a JSON Object.
If you're expecting to get a JSON Array back, you should use JSONArrayRequest. This request should be included in Volley's toolbox package.
The result request declaration should look like this:
JsonArrayRequest request = new JsonArrayRequest("http://my.url.com/", new Response.Listener<JSONArray>()
{
@Override
public void onResponse(JSONArray response)
{
}
}, new Response.ErrorListener()
{
@Override
public void onErrorResponse(VolleyError error)
{
}
});
来源：https://stackoverflow.com/questions/31365888/getting-jsonarrays-with-volley