redo follower/ing viewer

Follower/ing viewer now uses the i endpoint (which returns more users at once) as well as caching (less requests needed) so its response time has decreased significantly (to 1/3 in my case)

app/src/main/java/awais/instagrabber/adapters/FeedAdapter.java

@@ -1,111 +0,0 @@
-// package awais.instagrabber.adapters;
-//
-// import android.content.Context;
-// import android.view.LayoutInflater;
-// import android.view.View;
-// import android.view.ViewGroup;
-//
-// import androidx.annotation.NonNull;
-// import androidx.recyclerview.widget.DiffUtil;
-// import androidx.recyclerview.widget.ListAdapter;
-//
-// import awais.instagrabber.adapters.viewholder.feed.FeedItemViewHolder;
-// import awais.instagrabber.adapters.viewholder.feed.FeedPhotoViewHolder;
-// import awais.instagrabber.adapters.viewholder.feed.FeedSliderViewHolder;
-// import awais.instagrabber.adapters.viewholder.feed.FeedVideoViewHolder;
-// import awais.instagrabber.customviews.RamboTextView;
-// import awais.instagrabber.databinding.ItemFeedPhotoBinding;
-// import awais.instagrabber.databinding.ItemFeedSliderBinding;
-// import awais.instagrabber.databinding.ItemFeedVideoBinding;
-// import awais.instagrabber.interfaces.MentionClickListener;
-// import awais.instagrabber.models.FeedModel;
-// import awais.instagrabber.models.enums.MediaItemType;
-// import awais.instagrabber.utils.Utils;
-//
-// public final class FeedAdapter extends ListAdapter<FeedModel, FeedItemViewHolder> {
-//     private static final String TAG = "FeedAdapter";
-//     private final View.OnClickListener clickListener;
-//     private final MentionClickListener mentionClickListener;
-//     private final View.OnLongClickListener longClickListener = v -> {
-//         final Object tag;
-//         if (v instanceof RamboTextView && (tag = v.getTag()) instanceof FeedModel)
-//             Utils.copyText(v.getContext(), ((FeedModel) tag).getPostCaption());
-//         return true;
-//     };
-//
-//     private static final DiffUtil.ItemCallback<FeedModel> diffCallback = new DiffUtil.ItemCallback<FeedModel>() {
-//         @Override
-//         public boolean areItemsTheSame(@NonNull final FeedModel oldItem, @NonNull final FeedModel newItem) {
-//             return oldItem.getPostId().equals(newItem.getPostId());
-//         }
-//
-//         @Override
-//         public boolean areContentsTheSame(@NonNull final FeedModel oldItem, @NonNull final FeedModel newItem) {
-//             return oldItem.getPostId().equals(newItem.getPostId());
-//         }
-//     };
-//
-//     public FeedAdapter(final View.OnClickListener clickListener,
-//                        final MentionClickListener mentionClickListener) {
-//         super(diffCallback);
-//         // private final static String ellipsize = "… more";
-//         this.clickListener = clickListener;
-//         this.mentionClickListener = mentionClickListener;
-//     }
-//
-//     @NonNull
-//     @Override
-//     public FeedItemViewHolder onCreateViewHolder(@NonNull final ViewGroup parent, final int viewType) {
-//         final Context context = parent.getContext();
-//         final LayoutInflater layoutInflater = LayoutInflater.from(context);
-//         final MediaItemType type = MediaItemType.valueOf(viewType);
-//         switch (type) {
-//             case MEDIA_TYPE_VIDEO: {
-//                 final ItemFeedVideoBinding binding = ItemFeedVideoBinding.inflate(layoutInflater, parent, false);
-//                 return new FeedVideoViewHolder(binding, mentionClickListener, clickListener, longClickListener);
-//             }
-//             case MEDIA_TYPE_SLIDER: {
-//                 final ItemFeedSliderBinding binding = ItemFeedSliderBinding.inflate(layoutInflater, parent, false);
-//                 return new FeedSliderViewHolder(binding, mentionClickListener, clickListener, longClickListener);
-//             }
-//             case MEDIA_TYPE_IMAGE:
-//             default: {
-//                 final ItemFeedPhotoBinding binding = ItemFeedPhotoBinding.inflate(layoutInflater, parent, false);
-//                 return new FeedPhotoViewHolder(binding, mentionClickListener, clickListener, longClickListener);
-//             }
-//         }
-//     }
-//
-//     @Override
-//     public void onBindViewHolder(@NonNull final FeedItemViewHolder viewHolder, final int position) {
-//         final FeedModel feedModel = getItem(position);
-//         if (feedModel == null) {
-//             return;
-//         }
-//         feedModel.setPosition(position);
-//         viewHolder.bind(feedModel, (feedModel1, view, postImage) -> {});
-//     }
-//
-//     @Override
-//     public int getItemViewType(final int position) {
-//         return getItem(position).getItemType().getId();
-//     }
-//
-//     @Override
-//     public void onViewAttachedToWindow(@NonNull final FeedItemViewHolder holder) {
-//         super.onViewAttachedToWindow(holder);
-//         // Log.d(TAG, "attached holder: " + holder);
-//         if (!(holder instanceof FeedSliderViewHolder)) return;
-//         final FeedSliderViewHolder feedSliderViewHolder = (FeedSliderViewHolder) holder;
-//         feedSliderViewHolder.startPlayingVideo();
-//     }
-//
-//     @Override
-//     public void onViewDetachedFromWindow(@NonNull final FeedItemViewHolder holder) {
-//         super.onViewDetachedFromWindow(holder);
-//         // Log.d(TAG, "detached holder: " + holder);
-//         if (!(holder instanceof FeedSliderViewHolder)) return;
-//         final FeedSliderViewHolder feedSliderViewHolder = (FeedSliderViewHolder) holder;
-//         feedSliderViewHolder.stopPlayingVideo();
-//     }
-// }

app/src/main/java/awais/instagrabber/asyncs/FollowFetcher.java

@@ -1,101 +0,0 @@
-package awais.instagrabber.asyncs;
-
-import android.os.AsyncTask;
-import android.util.Log;
-
-import org.json.JSONArray;
-import org.json.JSONObject;
-
-import java.net.HttpURLConnection;
-import java.net.URL;
-
-import awais.instagrabber.BuildConfig;
-import awais.instagrabber.interfaces.FetchListener;
-import awais.instagrabber.models.FollowModel;
-import awais.instagrabber.utils.Constants;
-import awais.instagrabber.utils.NetworkUtils;
-import awaisomereport.LogCollector;
-
-import static awais.instagrabber.utils.Utils.logCollector;
-
-public final class FollowFetcher extends AsyncTask<Void, Void, FollowModel[]> {
-    private final String endCursor, id;
-    private final boolean isFollowers;
-    private final FetchListener<FollowModel[]> fetchListener;
-
-    public FollowFetcher(final String id, final boolean isFollowers, final FetchListener<FollowModel[]> fetchListener) {
-        this.id = id;
-        this.endCursor = "";
-        this.isFollowers = isFollowers;
-        this.fetchListener = fetchListener;
-    }
-
-    public FollowFetcher(final String id, final boolean isFollowers, final String endCursor, final FetchListener<FollowModel[]> fetchListener) {
-        this.id = id;
-        this.endCursor = endCursor == null ? "" : endCursor;
-        this.isFollowers = isFollowers;
-        this.fetchListener = fetchListener;
-    }
-
-    @Override
-    protected void onPreExecute() {
-        if (fetchListener != null) fetchListener.doBefore();
-    }
-
-    @Override
-    protected FollowModel[] doInBackground(final Void... voids) {
-        FollowModel[] result = null;
-        final String url = "https://www.instagram.com/graphql/query/?query_id=" + (isFollowers ? "17851374694183129" : "17874545323001329")
-                + "&id=" + id + "&first=50&after=" + endCursor;
-
-        try {
-            final HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
-            conn.setInstanceFollowRedirects(false);
-            conn.setUseCaches(false);
-            conn.connect();
-
-            if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
-                final JSONObject data = new JSONObject(NetworkUtils.readFromConnection(conn)).getJSONObject("data")
-                                                                                             .getJSONObject(Constants.EXTRAS_USER).getJSONObject(isFollowers ? "edge_followed_by" : "edge_follow");
-
-                final String endCursor;
-                final boolean hasNextPage;
-
-                final JSONObject pageInfo = data.getJSONObject("page_info");
-                if (pageInfo.has("has_next_page")) {
-                    hasNextPage = pageInfo.getBoolean("has_next_page");
-                    endCursor = hasNextPage ? pageInfo.getString("end_cursor") : null;
-                } else {
-                    hasNextPage = false;
-                    endCursor = null;
-                }
-
-                final JSONArray edges = data.getJSONArray("edges");
-                final FollowModel[] models = new FollowModel[edges.length()];
-                for (int i = 0; i < models.length; ++i) {
-                    final JSONObject followNode = edges.getJSONObject(i).getJSONObject("node");
-                    models[i] = new FollowModel(followNode.getString(Constants.EXTRAS_ID), followNode.getString(Constants.EXTRAS_USERNAME),
-                            followNode.getString("full_name"), followNode.getString("profile_pic_url"));
-                }
-
-                if (models[models.length - 1] != null)
-                    models[models.length - 1].setPageCursor(hasNextPage, endCursor);
-
-                result = models;
-            }
-
-            conn.disconnect();
-        } catch (final Exception e) {
-            if (logCollector != null)
-                logCollector.appendException(e, LogCollector.LogFile.ASYNC_FOLLOW_FETCHER, "doInBackground");
-            if (BuildConfig.DEBUG) Log.e("AWAISKING_APP", "", e);
-        }
-
-        return result;
-    }
-
-    @Override
-    protected void onPostExecute(final FollowModel[] result) {
-        if (fetchListener != null) fetchListener.onResult(result);
-    }
-}

app/src/main/java/awais/instagrabber/fragments/FollowViewerFragment.java

@@ -1,5 +1,6 @@
 package awais.instagrabber.fragments;
 
+import android.content.Context;
 import android.content.res.Resources;
 import android.os.AsyncTask;
 import android.os.Bundle;
@@ -10,6 +11,7 @@ import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
@@ -26,15 +28,20 @@ import java.util.Arrays;
 import awais.instagrabber.BuildConfig;
 import awais.instagrabber.R;
 import awais.instagrabber.adapters.FollowAdapter;
-import awais.instagrabber.asyncs.FollowFetcher;
 import awais.instagrabber.databinding.FragmentFollowersViewerBinding;
-import awais.instagrabber.interfaces.FetchListener;
 import awais.instagrabber.models.FollowModel;
+import awais.instagrabber.repositories.responses.FriendshipRepoChangeRootResponse;
+import awais.instagrabber.repositories.responses.FriendshipRepoListFetchResponse;
+import awais.instagrabber.utils.Constants;
+import awais.instagrabber.utils.CookieUtils;
 import awais.instagrabber.utils.TextUtils;
+import awais.instagrabber.webservices.FriendshipService;
+import awais.instagrabber.webservices.ServiceCallback;
 import awaisomereport.LogCollector;
 import thoughtbot.expandableadapter.ExpandableGroup;
 
 import static awais.instagrabber.utils.Utils.logCollector;
+import static awais.instagrabber.utils.Utils.settingsHelper;
 
 public final class FollowViewerFragment extends Fragment implements SwipeRefreshLayout.OnRefreshListener {
     private static final String TAG = "FollowViewerFragment";
@@ -44,7 +51,7 @@ public final class FollowViewerFragment extends Fragment implements SwipeRefresh
     private final ArrayList<FollowModel> followersModels = new ArrayList<>();
     private final ArrayList<FollowModel> allFollowing = new ArrayList<>();
 
-    private boolean isFollowersList, isCompare = false;
+    private boolean isFollowersList, isCompare = false, loading = false;
     private String profileId, username, namePost, type;
     private Resources resources;
     private FollowModel model;
@@ -53,12 +60,14 @@ public final class FollowViewerFragment extends Fragment implements SwipeRefresh
     private FragmentFollowersViewerBinding binding;
     private AsyncTask<Void, Void, FollowModel[]> currentlyExecuting;
     private SwipeRefreshLayout root;
+    private FriendshipService friendshipService;
     private boolean shouldRefresh = true;
     private AppCompatActivity fragmentActivity;
 
     @Override
     public void onCreate(@Nullable final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        friendshipService = FriendshipService.getInstance();
         fragmentActivity = (AppCompatActivity) getActivity();
         setHasOptionsMenu(true);
     }
@@ -135,58 +144,99 @@ public final class FollowViewerFragment extends Fragment implements SwipeRefresh
     }
 
     private void listFollows() {
-        stopCurrentExecutor();
+        loading = true;
         type = resources.getString(isFollowersList ? R.string.followers_type_followers : R.string.followers_type_following);
         setSubtitle(type);
         followModels.clear();
-        final FetchListener<FollowModel[]> fetchListener = new FetchListener<FollowModel[]>() {
+        final ServiceCallback<FriendshipRepoListFetchResponse> cb = new ServiceCallback<FriendshipRepoListFetchResponse>() {
             @Override
-            public void doBefore() {
+            public void onSuccess(final FriendshipRepoListFetchResponse result) {
-                binding.swipeRefreshLayout.setRefreshing(true);
+                if (result == null) {
-            }
-
-            @Override
-            public void onResult(final FollowModel[] result) {
-                if (result == null) binding.swipeRefreshLayout.setRefreshing(false);
-                else {
-                    followModels.addAll(Arrays.asList(result));
-
-                    final FollowModel model = result[result.length - 1];
-                    if (model != null && model.hasNextPage()) {
-                        stopCurrentExecutor();
-                        currentlyExecuting = new FollowFetcher(profileId, isFollowersList, model.getEndCursor(), this)
-                                .executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
-                        model.setPageCursor(false, null);
-                    } else {
                     binding.swipeRefreshLayout.setRefreshing(false);
-
+                    return;
+                }
+                else {
+                    followModels.addAll(result.getItems());
+                    if (result.isMoreAvailable()) {
+                        friendshipService.getList(isFollowersList, profileId, result.getNextMaxId(), this);
+                    }
+                    else {
+                        binding.swipeRefreshLayout.setRefreshing(false);
+                        if (isFollowersList) followersModels.addAll(followModels);
+                        else followingModels.addAll(followModels);
                         refreshAdapter(followModels, null, null, null);
                     }
                 }
             }
+
+            @Override
+            public void onFailure(final Throwable t) {
+                binding.swipeRefreshLayout.setRefreshing(false);
+                Log.e(TAG, "Error fetching list (single)", t);
+            }
         };
-        currentlyExecuting = new FollowFetcher(profileId, isFollowersList, fetchListener).executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
+        binding.swipeRefreshLayout.setRefreshing(true);
+        friendshipService.getList(isFollowersList, profileId, null, cb);
     }
 
     private void listCompare() {
-        stopCurrentExecutor();
+        loading = true;
         setSubtitle(R.string.followers_compare);
         allFollowing.clear();
         followersModels.clear();
         followingModels.clear();
-        final FetchListener<FollowModel[]> followingFetchListener = new FetchListener<FollowModel[]>() {
+        final ServiceCallback<FriendshipRepoListFetchResponse> followingFetchCb = new ServiceCallback<FriendshipRepoListFetchResponse>() {
             @Override
-            public void onResult(final FollowModel[] result) {
+            public void onSuccess(final FriendshipRepoListFetchResponse result) {
                 if (result != null) {
-                    followingModels.addAll(Arrays.asList(result));
+                    followingModels.addAll(result.getItems());
 
-                    final FollowModel model = result[result.length - 1];
+                    if (result.isMoreAvailable()) {
-                    if (model != null && model.hasNextPage()) {
+                        friendshipService.getList(false, profileId, result.getNextMaxId(), this);
-                        stopCurrentExecutor();
-                        currentlyExecuting = new FollowFetcher(profileId, false, model.getEndCursor(), this)
-                                .executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
-                        model.setPageCursor(false, null);
                     } else {
+                        showCompare();
+                    }
+                } else binding.swipeRefreshLayout.setRefreshing(false);
+            }
+
+            @Override
+            public void onFailure(final Throwable t) {
+                binding.swipeRefreshLayout.setRefreshing(false);
+                Log.e(TAG, "Error fetching list (double, following)", t);
+            }
+        };
+        final ServiceCallback<FriendshipRepoListFetchResponse> followersFetchCb = new ServiceCallback<FriendshipRepoListFetchResponse>() {
+            @Override
+            public void onSuccess(final FriendshipRepoListFetchResponse result) {
+                if (result != null) {
+                    followersModels.addAll(result.getItems());
+                    if (result.isMoreAvailable()) {
+                        friendshipService.getList(true, profileId, result.getNextMaxId(), this);
+                    } else if (followingModels.size() == 0) {
+                        friendshipService.getList(false, profileId, null, followingFetchCb);
+                    } else {
+                        showCompare();
+                    }
+                }
+            }
+
+            @Override
+            public void onFailure(final Throwable t) {
+                binding.swipeRefreshLayout.setRefreshing(false);
+                Log.e(TAG, "Error fetching list (double, follower)", t);
+            }
+        };
+        binding.swipeRefreshLayout.setRefreshing(true);
+        if (followersModels.size() == 0) {
+            friendshipService.getList(true, profileId, null, followersFetchCb);
+        }
+        else if (followingModels.size() == 0) {
+            friendshipService.getList(false, profileId, null, followingFetchCb);
+        }
+        else showCompare();
+    }
+
+    private void showCompare() {
         allFollowing.addAll(followersModels);
         allFollowing.retainAll(followingModels);
 
@@ -203,35 +253,6 @@ public final class FollowViewerFragment extends Fragment implements SwipeRefresh
 
         refreshAdapter(null, followingModels, followersModels, allFollowing);
     }
-                } else binding.swipeRefreshLayout.setRefreshing(false);
-            }
-        };
-        final FetchListener<FollowModel[]> followersFetchListener = new FetchListener<FollowModel[]>() {
-            @Override
-            public void doBefore() {
-                binding.swipeRefreshLayout.setRefreshing(true);
-            }
-
-            @Override
-            public void onResult(final FollowModel[] result) {
-                if (result != null) {
-                    followersModels.addAll(Arrays.asList(result));
-                    final FollowModel model = result[result.length - 1];
-                    if (model == null || !model.hasNextPage()) {
-                        stopCurrentExecutor();
-                        currentlyExecuting = new FollowFetcher(profileId, false, followingFetchListener)
-                                .executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
-                    } else {
-                        stopCurrentExecutor();
-                        currentlyExecuting = new FollowFetcher(profileId, true, model.getEndCursor(), this)
-                                .executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
-                        model.setPageCursor(false, null);
-                    }
-                }
-            }
-        };
-        currentlyExecuting = new FollowFetcher(profileId, true, followersFetchListener).executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
-    }
 
     @Override
     public void onCreateOptionsMenu(@NonNull final Menu menu, final MenuInflater inflater) {
@@ -322,9 +343,16 @@ public final class FollowViewerFragment extends Fragment implements SwipeRefresh
     public boolean onOptionsItemSelected(@NonNull final MenuItem item) {
         if (item.getItemId() != R.id.action_compare) return super.onOptionsItemSelected(item);
         binding.rvFollow.setAdapter(null);
-        if (isCompare) listFollows();
+        final Context context = getContext();
-        else listCompare();
+        if (loading) Toast.makeText(context, R.string.follower_wait_to_load, Toast.LENGTH_LONG).show();
+        else if (isCompare) {
+            listFollows();
             isCompare = !isCompare;
+        }
+        else {
+            listCompare();
+            isCompare = !isCompare;
+        }
         return true;
     }
 
@@ -332,6 +360,7 @@ public final class FollowViewerFragment extends Fragment implements SwipeRefresh
                                 final ArrayList<FollowModel> followingModels,
                                 final ArrayList<FollowModel> followersModels,
                                 final ArrayList<FollowModel> allFollowing) {
+        loading = false;
         final ArrayList<ExpandableGroup> groups = new ArrayList<>(1);
 
         if (isCompare) {
@@ -349,18 +378,4 @@ public final class FollowViewerFragment extends Fragment implements SwipeRefresh
         adapter.toggleGroup(0);
         binding.rvFollow.setAdapter(adapter);
     }
-
-    public void stopCurrentExecutor() {
-        if (currentlyExecuting != null) {
-            try {
-                currentlyExecuting.cancel(true);
-            } catch (final Exception e) {
-                if (logCollector != null)
-                    logCollector.appendException(e, LogCollector.LogFile.MAIN_HELPER, "stopCurrentExecutor");
-                if (BuildConfig.DEBUG) {
-                    Log.e(TAG, "", e);
-                }
-            }
-        }
-    }
 }

app/src/main/java/awais/instagrabber/fragments/main/ProfileFragment.java

@@ -612,7 +612,7 @@ public class ProfileFragment extends Fragment implements SwipeRefreshLayout.OnRe
                 return true;
             });
         }
-        if (!profileModel.isReallyPrivate()) {
+        if (!profileModel.isReallyPrivate() && isLoggedIn) {
             binding.mainFollowing.setClickable(true);
             binding.mainFollowers.setClickable(true);
 

app/src/main/java/awais/instagrabber/repositories/FriendshipRepository.java

@@ -3,13 +3,16 @@ package awais.instagrabber.repositories;
 import java.util.Map;
 
 import awais.instagrabber.repositories.responses.FriendshipRepoChangeRootResponse;
+import awais.instagrabber.repositories.responses.FriendshipRepoListFetchResponse;
 import awais.instagrabber.repositories.responses.FriendshipRepoRestrictRootResponse;
 import retrofit2.Call;
 import retrofit2.http.FieldMap;
 import retrofit2.http.FormUrlEncoded;
+import retrofit2.http.GET;
 import retrofit2.http.Header;
 import retrofit2.http.POST;
 import retrofit2.http.Path;
+import retrofit2.http.QueryMap;
 
 public interface FriendshipRepository {
 
@@ -25,4 +28,10 @@ public interface FriendshipRepository {
     Call<FriendshipRepoRestrictRootResponse> toggleRestrict(@Header("User-Agent") String userAgent,
                                                             @Path("action") String action,
                                                             @FieldMap Map<String, String> form);
+
+    @GET("/api/v1/friendships/{userId}/{type}/")
+    Call<String> getList(@Header("User-Agent") String userAgent,
+                         @Path("userId") String userId,
+                         @Path("type") String type, // following or followers
+                         @QueryMap(encoded = true) Map<String, String> queryParams);
 }

app/src/main/java/awais/instagrabber/repositories/responses/FriendshipRepoListFetchResponse.java

@@ -0,0 +1,79 @@
+package awais.instagrabber.repositories.responses;
+
+import androidx.annotation.NonNull;
+
+import java.util.List;
+import java.util.Objects;
+
+import awais.instagrabber.models.FollowModel;
+import awais.instagrabber.utils.TextUtils;
+
+public class FriendshipRepoListFetchResponse {
+    private String nextMaxId;
+    private String status;
+    private List<FollowModel> items;
+
+    public FriendshipRepoListFetchResponse(final String nextMaxId,
+                                           final String status,
+                                           final List<FollowModel> items) {
+        this.nextMaxId = nextMaxId;
+        this.status = status;
+        this.items = items;
+    }
+
+    public boolean isMoreAvailable() {
+        return !TextUtils.isEmpty(nextMaxId);
+    }
+
+    public String getNextMaxId() {
+        return nextMaxId;
+    }
+
+    public FriendshipRepoListFetchResponse setNextMaxId(final String nextMaxId) {
+        this.nextMaxId = nextMaxId;
+        return this;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public FriendshipRepoListFetchResponse setStatus(final String status) {
+        this.status = status;
+        return this;
+    }
+
+    public List<FollowModel> getItems() {
+        return items;
+    }
+
+    public FriendshipRepoListFetchResponse setItems(final List<FollowModel> items) {
+        this.items = items;
+        return this;
+    }
+
+    @Override
+    public boolean equals(final Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        final FriendshipRepoListFetchResponse that = (FriendshipRepoListFetchResponse) o;
+        return Objects.equals(nextMaxId, that.nextMaxId) &&
+                Objects.equals(status, that.status) &&
+                Objects.equals(items, that.items);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(nextMaxId, status, items);
+    }
+
+    @NonNull
+    @Override
+    public String toString() {
+        return "FriendshipRepoListFetchResponse{" +
+                "nextMaxId='" + nextMaxId + '\'' +
+                ", status='" + status + '\'' +
+                ", items=" + items +
+                '}';
+    }
+}

app/src/main/java/awais/instagrabber/webservices/FriendshipService.java

@@ -1,15 +1,28 @@
 package awais.instagrabber.webservices;
 
+import android.util.Log;
+
 import androidx.annotation.NonNull;
 
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.UUID;
 
+import awais.instagrabber.models.FollowModel;
 import awais.instagrabber.repositories.FriendshipRepository;
 import awais.instagrabber.repositories.responses.FriendshipRepoChangeRootResponse;
+import awais.instagrabber.repositories.responses.FriendshipRepoListFetchResponse;
 import awais.instagrabber.repositories.responses.FriendshipRepoRestrictRootResponse;
 import awais.instagrabber.utils.Constants;
+import awais.instagrabber.utils.TextUtils;
 import awais.instagrabber.utils.Utils;
 import retrofit2.Call;
 import retrofit2.Callback;
@@ -139,4 +152,79 @@ public class FriendshipService extends BaseService {
             }
         });
     }
+
+    // log in required
+    public void getList(final boolean follower,
+                        final String targetUserId,
+                        final String maxId,
+                        final ServiceCallback<FriendshipRepoListFetchResponse> callback) {
+        final Map<String, String> queryMap = new HashMap<>();
+        queryMap.put("max_id", maxId == null ? "" : maxId);
+        final Call<String> request = repository.getList(Constants.I_USER_AGENT,
+                                                        targetUserId,
+                                                        follower ? "followers" : "following",
+                                                        queryMap);
+        request.enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(@NonNull final Call<String> call, @NonNull final Response<String> response) {
+                try {
+                    if (callback == null) {
+                        return;
+                    }
+                    final String body = response.body();
+                    if (TextUtils.isEmpty(body)) {
+
+                        callback.onSuccess(null);
+                        return;
+                    }
+                    final FriendshipRepoListFetchResponse friendshipListFetchResponse = parseListResponse(body);
+                    callback.onSuccess(friendshipListFetchResponse);
+                } catch (JSONException e) {
+                    Log.e(TAG, "onResponse", e);
+                    callback.onFailure(e);
+                }
+            }
+
+            @Override
+            public void onFailure(@NonNull final Call<String> call, @NonNull final Throwable t) {
+                if (callback != null) {
+                    callback.onFailure(t);
+                }
+            }
+        });
+    }
+
+    private FriendshipRepoListFetchResponse parseListResponse(@NonNull final String body) throws JSONException {
+        final JSONObject root = new JSONObject(body);
+        final String nextMaxId = root.optString("next_max_id");
+        final String status = root.optString("status");
+        final JSONArray itemsJson = root.optJSONArray("users");
+        final List<FollowModel> items = parseItems(itemsJson);
+        return new FriendshipRepoListFetchResponse(
+                nextMaxId,
+                status,
+                items
+        );
+    }
+
+    private List<FollowModel> parseItems(final JSONArray items) throws JSONException {
+        if (items == null) {
+            return Collections.emptyList();
+        }
+        final List<FollowModel> followModels = new ArrayList<>();
+        for (int i = 0; i < items.length(); i++) {
+            final JSONObject itemJson = items.optJSONObject(i);
+            if (itemJson == null) {
+                continue;
+            }
+            final FollowModel followModel = new FollowModel(itemJson.getString("pk"),
+                                                            itemJson.getString("username"),
+                                                            itemJson.optString("full_name"),
+                                                            itemJson.getString("profile_pic_url"));
+            if (followModel != null) {
+                followModels.add(followModel);
+            }
+        }
+        return followModels;
+    }
 }

app/src/main/res/values/strings.xml

@@ -328,6 +328,7 @@
     <string name="corners">Corners</string>
     <string name="show_grid_gap">Show grid gap</string>
     <string name="disable_animation">Disable animation</string>
+    <string name="follower_wait_to_load">Please wait for the current task to complete first!</string>
     <plurals name="likes_count">
         <item quantity="one">%d like</item>
         <item quantity="other">%d likes</item>