我正在尝试从服务器获取一些数据,但我的列表仍为空,据我所知问题是onPersonse()未被调用
这是我的Singeton课程
public class VolleySingleton extends Application {
public static final String TAG = VolleySingleton.class.getSimpleName();
private RequestQueue requestQueue;
private static VolleySingleton instance;
@Override
public void onCreate() {
super.onCreate();
instance = this;
}
public static synchronized VolleySingleton getInstance() {
return instance;
}
public RequestQueue getRequestQueue() {
if (requestQueue == null) {
requestQueue = Volley.newRequestQueue(getApplicationContext());
}
return requestQueue;
}
public <T> void addToRequestQueue(Request<T> req, String tag) {
req.setTag(TextUtils.isEmpty(tag) ? TAG : tag);
getRequestQueue().add(req);
}
public <T> void addToRequestQueue(Request<T> request) {
getRequestQueue().add(request);
}
public void cancelPendingRequests(Object tag) {
if (requestQueue != null) {
requestQueue.cancelAll(tag);
}
}
}
以及我尝试从服务器获取数据的方法
private static String TAG = MainActivity.class.getSimpleName();
public static void getRoomArray(String url, final List<Room> roomList, final Context context) {
JsonArrayRequest arrayRequest = new JsonArrayRequest(url, new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
Log.d(TAG, response.toString());
try {
Room room = null;
for (int i = 0; i < response.length(); i++) {
room=new Room();
JSONObject newRoom = (JSONObject) response.get(i);
room.setId(newRoom.getLong("id"));
room.setName(newRoom.getString("name"));
room.setActive(newRoom.getBoolean("active"));
roomList.add(room);
}
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(context,"Error During Load Data",Toast.LENGTH_SHORT).show();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {
Toast.makeText(context,volleyError.getMessage(),Toast.LENGTH_SHORT).show();
}
});
VolleySingleton.getInstance().addToRequestQueue(arrayRequest);
}