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Why is there no HTTP request to the server from the ListFragment class descendant?
There is an inheritor of the ListFragment class, which, when accessed, will create a request to the server and then build a list on the screen. But for some reason I have an empty list displayed on the screen.
I decided to check if the request to the server is happening and added the information to the log. But as it turned out, the application does not even send a request to the server. This happens for the ListFragment heir, in MainActivity a request to the server is sent and successfully arrives.
public class SingleListFragment extends ListFragment {
ArrayList<Order> OrderList;
@Override
public void onViewCreated(View view, Bundle bundle){
super.onViewCreated(view,bundle);
final MyListAdapter myListAdapter = new MyListAdapter(getActivity(),
R.layout.order_list_item, OrderList);
JsonArrayRequest jsObjRequest = new JsonArrayRequest(Request.Method.GET, "http://192.168.1.200:5000/TerminalCommon/GetOrders?idStep=24", null, new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
try {
Log.d("Запрос на сервер","получен");
GsonBuilder builder=new GsonBuilder();
Gson gson=builder.create();
ArrayList<Order> orderList=gson.fromJson(response.toString(),new TypeToken<List<Order>>(){}.getType());
OrderList=orderList;
myListAdapter.notifyDataSetChanged();
}
catch (Exception e){
Log.e("Get steps",e.getMessage());
};
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e("Error gson",error.getMessage());
}
});
RequestQueue queue = Volley.newRequestQueue(getActivity().getApplicationContext());
queue.add(jsObjRequest);
setListAdapter(myListAdapter);
}
}
RequestQueue queue = Volley.newRequestQueue(getActivity().getApplicationContext());
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I figured it out, I forgot to specify in the manifest:
<uses-permission android:name="android.permission.INTERNET" />
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