Remove non-empty constructors in AssignmentsFragment & MoodleLoginDialogFragment causing crashes

Author: therealsujitk

app/src/main/java/tk/therealsuji/vtopchennai/activities/LoginActivity.java

@@ -128,7 +128,7 @@ public void onNext(@NonNull JSONObject about) {
                                 FragmentManager fragmentManager = getSupportFragmentManager();
                                 FragmentTransaction transaction = fragmentManager.beginTransaction();
                                 transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
-                                transaction.add(android.R.id.content, new UpdateDialogFragment(versionName, releaseNotes)).addToBackStack(null).commit();
+                                transaction.add(android.R.id.content, UpdateDialogFragment.newInstance(versionName, releaseNotes)).addToBackStack(null).commit();
                             }
                         } catch (Exception ignored) {
                         }

app/src/main/java/tk/therealsuji/vtopchennai/activities/MainActivity.java

@@ -379,7 +379,7 @@ public void onNext(@NonNull JSONObject about) {
                                 FragmentManager fragmentManager = getSupportFragmentManager();
                                 FragmentTransaction transaction = fragmentManager.beginTransaction();
                                 transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
-                                transaction.add(android.R.id.content, new UpdateDialogFragment(versionName, releaseNotes)).addToBackStack(null).commit();
+                                transaction.add(android.R.id.content, UpdateDialogFragment.newInstance(versionName, releaseNotes)).addToBackStack(null).commit();
 
                                 return;
                             }

app/src/main/java/tk/therealsuji/vtopchennai/fragments/AssignmentsFragment.java

@@ -370,11 +370,7 @@ private void displaySignInPage() {
                 new EmptyStateAdapter.ButtonAttributes() {
                     @Override
                     public void onClick() {
-                        MoodleLoginDialogFragment moodleLoginDialogFragment = new MoodleLoginDialogFragment(o -> {
-                            displayAssignmentsPage();
-                            return null;
-                        });
-
+                        MoodleLoginDialogFragment moodleLoginDialogFragment = new MoodleLoginDialogFragment();
                         FragmentManager fragmentManager = requireActivity().getSupportFragmentManager();
                         FragmentTransaction transaction = fragmentManager.beginTransaction();
                         transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
@@ -464,6 +460,9 @@ public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle sa
             getParentFragmentManager().setFragmentResult("customInsets2", result);
         });
 
+        // Display Assignments if triggered from MoodleLoginDialogFragment
+        getParentFragmentManager().setFragmentResultListener("displayAssignmentsPage", this, (requestKey, result) -> displayAssignmentsPage());
+
         this.swipeRefreshLayout.setColorSchemeColors(MaterialColors.getColor(this.swipeRefreshLayout, R.attr.colorSurface));
         this.swipeRefreshLayout.setProgressBackgroundColorSchemeColor(MaterialColors.getColor(this.swipeRefreshLayout, R.attr.colorPrimary));
         this.swipeRefreshLayout.setOnRefreshListener(this);

app/src/main/java/tk/therealsuji/vtopchennai/fragments/dialogs/MoodleLoginDialogFragment.java

@@ -22,7 +22,6 @@
 import org.json.JSONObject;
 
 import java.util.Objects;
-import java.util.function.Function;
 
 import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers;
 import io.reactivex.rxjava3.core.SingleObserver;
@@ -41,17 +40,12 @@ public class MoodleLoginDialogFragment extends DialogFragment {
     EditText username, password;
 
     CompositeDisposable compositeDisposable = new CompositeDisposable();
-    Function<Object, Object> callback;
     MoodleApi moodleApi;
 
     public MoodleLoginDialogFragment() {
         // Required empty public constructor
     }
 
-    public MoodleLoginDialogFragment(Function<Object, Object> callback) {
-        this.callback = callback;
-    }
-
     private void signIn() {
         this.setLoading(true);
 
@@ -152,7 +146,7 @@ public void onDestroyView() {
         super.onDestroyView();
 
         if (SettingsRepository.isMoodleSignedIn(requireContext())) {
-            this.callback.apply(null);
+            getParentFragmentManager().setFragmentResult("displayAssignmentsPage", new Bundle());
         }
 
         compositeDisposable.dispose();

app/src/main/java/tk/therealsuji/vtopchennai/fragments/dialogs/ReCaptchaDialogFragment.java

@@ -24,6 +24,8 @@ public ReCaptchaDialogFragment() {
         // Required empty public constructor
     }
 
+    // TODO: Remove this constructor, android fragments should never be created using a non-empty
+    //       constructor as android can sometimes re-create them with the empty constructor.
     public ReCaptchaDialogFragment(@NonNull WebView webView, @NonNull OnCancelListener onCancelListener) {
         this.onCancelListener = onCancelListener;
         this.webView = webView;

app/src/main/java/tk/therealsuji/vtopchennai/fragments/dialogs/UpdateDialogFragment.java

@@ -24,15 +24,27 @@ public UpdateDialogFragment() {
         // Required empty public constructor
     }
 
-    public UpdateDialogFragment(String versionName, String releaseNotes) {
-        this.versionName = versionName;
-        this.releaseNotes = releaseNotes;
+    public static UpdateDialogFragment newInstance(String versionName, String releaseNotes) {
+        Bundle args = new Bundle();
+        UpdateDialogFragment fragment = new UpdateDialogFragment();
+
+        args.putString("versionName", versionName);
+        args.putString("releaseNotes", releaseNotes);
+
+        fragment.setArguments(args);
+        return fragment;
     }
 
     @Nullable
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
         View dialogFragment = inflater.inflate(R.layout.layout_dialog_update, container, false);
+        Bundle args = getArguments();
+
+        if (args != null) {
+            this.versionName = args.getString("versionName");
+            this.releaseNotes = args.getString("releaseNotes");
+        }
 
         TextView description = dialogFragment.findViewById(R.id.text_view_description);
         description.setText(Html.fromHtml(this.requireContext().getString(R.string.update_message, this.versionName), Html.FROM_HTML_MODE_LEGACY));