fix #49, #50 and the saved issue

app/src/main/java/awais/instagrabber/MainHelper.java

@@ -119,7 +119,9 @@ public final class MainHelper implements SwipeRefreshLayout.OnRefreshListener {
                     endCursor = model.getEndCursor();
                     hasNextPage = model.hasNextPage();
                     if (autoloadPosts && hasNextPage)
-                        currentlyExecuting = new PostsFetcher(main.profileModel.getId(), endCursor, this)
+                        currentlyExecuting = new PostsFetcher(
+                                main.profileModel != null ? main.profileModel.getId()
+                                    : (main.hashtagModel != null ? main.userQuery : main.locationModel.getId()), endCursor, this)
                                 .setUsername((isLocation || isHashtag) ? null : main.profileModel.getUsername())
                                 .executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
                     else {
@@ -462,7 +464,8 @@ public final class MainHelper implements SwipeRefreshLayout.OnRefreshListener {
             if ((!autoloadPosts || isHashtag) && hasNextPage) {
                 main.mainBinding.profileView.swipeRefreshLayout.setRefreshing(true);
                 stopCurrentExecutor();
-                currentlyExecuting = new PostsFetcher((isHashtag || isLocation) ? main.userQuery : main.profileModel.getId(), endCursor, postsFetchListener)
+                currentlyExecuting = new PostsFetcher(main.profileModel != null ? main.profileModel.getId()
+                        : (main.hashtagModel != null ? main.userQuery : main.locationModel.getId()), endCursor, postsFetchListener)
                         .setUsername((isHashtag || isLocation) ? null : main.profileModel.getUsername())
                         .executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
                 endCursor = null;

app/src/main/java/awais/instagrabber/activities/Login.java

@@ -6,6 +6,7 @@ import android.graphics.Bitmap;
 import android.os.Build;
 import android.os.Bundle;
 import android.view.View;
+import android.webkit.CookieManager;
 import android.webkit.WebChromeClient;
 import android.webkit.WebSettings;
 import android.webkit.WebView;
@@ -118,6 +119,7 @@ public final class Login extends BaseLanguageActivity implements View.OnClickLis
                     webSettings.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
             }
 
+            CookieManager.getInstance().removeAllCookies(null);
             loginBinding.webView.loadUrl("https://instagram.com/");
         }
     }

app/src/main/java/awais/instagrabber/activities/SavedViewer.java

@@ -58,8 +58,8 @@ public final class SavedViewer extends BaseLanguageActivity implements SwipeRefr
     private final FetchListener<PostModel[]> postsFetchListener = new FetchListener<PostModel[]>() {
         @Override
         public void onResult(final PostModel[] result) {
-            if (result != null) {
             final int oldSize = allItems.size();
+            if (result != null) {
                 allItems.addAll(Arrays.asList(result));
 
                 postsAdapter.notifyItemRangeInserted(oldSize, result.length);
@@ -88,10 +88,12 @@ public final class SavedViewer extends BaseLanguageActivity implements SwipeRefr
             }
             else {
                 savedBinding.swipeRefreshLayout.setRefreshing(false);
+                if (oldSize == 0) {
                     Toast.makeText(getApplicationContext(), R.string.empty_list, Toast.LENGTH_SHORT).show();
                     finish();
                 }
             }
+        }
     };
 
     @Override

app/src/main/java/awais/instagrabber/dialogs/SettingsDialog.java

@@ -39,6 +39,7 @@ import static awais.instagrabber.utils.Constants.APP_THEME;
 import static awais.instagrabber.utils.Constants.AUTOLOAD_POSTS;
 import static awais.instagrabber.utils.Constants.AUTOPLAY_VIDEOS;
 import static awais.instagrabber.utils.Constants.BOTTOM_TOOLBAR;
+import static awais.instagrabber.utils.Constants.COOKIE;
 import static awais.instagrabber.utils.Constants.DOWNLOAD_USER_FOLDER;
 import static awais.instagrabber.utils.Constants.FOLDER_PATH;
 import static awais.instagrabber.utils.Constants.FOLDER_SAVE_TO;
@@ -57,6 +58,7 @@ public final class SettingsDialog extends BottomSheetDialogFragment implements V
     private Spinner spAppTheme, spLanguage;
     private boolean somethingChanged = false;
     private int currentTheme, currentLanguage, selectedLanguage;
+    private String currentCookie;
 
     @Override
     public void onRequestPermissionsResult(final int requestCode, @NonNull final String[] permissions, @NonNull final int[] grantResults) {
@@ -121,6 +123,8 @@ public final class SettingsDialog extends BottomSheetDialogFragment implements V
         spLanguage.setSelection(currentLanguage);
         spLanguage.setOnItemSelectedListener(this);
 
+        currentCookie = settingsHelper.getString(COOKIE);
+
         final AppCompatCheckBox cbSaveTo = contentView.findViewById(R.id.cbSaveTo);
         final AppCompatCheckBox cbMuteVideos = contentView.findViewById(R.id.cbMuteVideos);
         final AppCompatCheckBox cbBottomToolbar = contentView.findViewById(R.id.cbBottomToolbar);