I am using a RecyclerView and fetching objects from an API in batches of ten. For pagination, I use EndlessRecyclerOnScrollListener and following this tutorial Endless RecyclerView.
My problem: on scrolling programm adding progress bar and delete it after data from server fetched. But in my case it doesn't work. ProgressBar still downloading
Method that fetched data
private void makeJsonObjectRequest(int startList,int endList,final JsonObjectListener listener) {
JsonArrayRequest movieReq = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
Log.d(TAG, response.toString());
i = startLsit;
while(i < endList) {
try {
JSONObject obj = response.getJSONObject(i);
Movie movie = new Movie();
/***** TONS OF CODE *****/
movieList.add(movie);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
i++;
lastNumber = i;
}
mAdapter.notifyDataSetChanged();
listener.onDone(lastNumber);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
}
});
AppController.getInstance().addToRequestQueue(movieReq);
}
Place where I use method:
makeJsonObjectRequest(0, 9, new JsonObjectListener() {
@Override
public void onDone(int lastNumberI) {
lastNumber = lastNumberI;
}
@Override
public void onError(String error) {
}
}); }
mAdapter = new RVAdapter(getContext(),movieList,this,mRecyclerView);
mAdapter.setClickListener(this);
mRecyclerView.setAdapter(mAdapter);
mAdapter.setOnLoadMoreListener(new OnLoadMoreListener() {
@Override
public void onLoadMore() {
movieList.add(null);
mAdapter.notifyItemInserted(movieList.size()-1);
handler.postDelayed(new Runnable() {
@Override
public void run() {
// remove progress item
movieList.remove(movieList.size()-1);
mAdapter.notifyItemRemoved(movieList.size());
//add items one by one
int start = lastNumber;
int end = start + 9;
makeJsonObjectRequest(start, end, new JsonObjectListener() {
@Override
public void onDone(int lastNumberI) {
lastNumber = lastNumberI;
}
@Override
public void onError(String error) {
}
});
mAdapter.setLoaded();
}
}, 2000);
}
});
My adapter like this Endless RecyclerView
