Fix updating flair in ViewPostDetailFragment.

app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewPostDetailActivity.java

@@ -44,14 +44,12 @@ import javax.inject.Named;
 import butterknife.BindView;
 import butterknife.ButterKnife;
 import ml.docilealligator.infinityforreddit.ActivityToolbarInterface;
-import ml.docilealligator.infinityforreddit.Flair;
 import ml.docilealligator.infinityforreddit.Infinity;
 import ml.docilealligator.infinityforreddit.R;
 import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
 import ml.docilealligator.infinityforreddit.SortType;
 import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
 import ml.docilealligator.infinityforreddit.asynctasks.SwitchAccount;
-import ml.docilealligator.infinityforreddit.bottomsheetfragments.FlairBottomSheetFragment;
 import ml.docilealligator.infinityforreddit.comment.Comment;
 import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
 import ml.docilealligator.infinityforreddit.events.NeedForPostListFromPostFragmentEvent;
@@ -62,8 +60,7 @@ import ml.docilealligator.infinityforreddit.fragments.ViewPostDetailFragment;
 import ml.docilealligator.infinityforreddit.post.Post;
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
 
-public class ViewPostDetailActivity extends BaseActivity implements FlairBottomSheetFragment.FlairSelectionCallback,
+public class ViewPostDetailActivity extends BaseActivity implements SortTypeSelectionCallback, ActivityToolbarInterface {
-        SortTypeSelectionCallback, ActivityToolbarInterface {
 
     public static final String EXTRA_POST_DATA = "EPD";
     public static final String EXTRA_POST_ID = "EPI";
@@ -386,14 +383,6 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS
         return super.onKeyDown(keyCode, event);
     }
 
-    @Override
-    public void flairSelected(Flair flair) {
-        ViewPostDetailFragment fragment = sectionsPagerAdapter.getCurrentFragment();
-        if (fragment != null) {
-            fragment.changeFlair(flair);
-        }
-    }
-
     @Override
     public void sortTypeSelected(SortType sortType) {
         ViewPostDetailFragment fragment = sectionsPagerAdapter.getCurrentFragment();

app/src/main/java/ml/docilealligator/infinityforreddit/bottomsheetfragments/FlairBottomSheetFragment.java

@@ -17,6 +17,8 @@ import androidx.recyclerview.widget.RecyclerView;
 
 import com.google.android.material.bottomsheet.BottomSheetDialogFragment;
 
+import org.greenrobot.eventbus.EventBus;
+
 import java.util.ArrayList;
 
 import javax.inject.Inject;
@@ -30,6 +32,7 @@ import ml.docilealligator.infinityforreddit.FetchFlairs;
 import ml.docilealligator.infinityforreddit.Flair;
 import ml.docilealligator.infinityforreddit.Infinity;
 import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.events.FlairSelectedEvent;
 import retrofit2.Retrofit;
 
 
@@ -40,6 +43,7 @@ public class FlairBottomSheetFragment extends BottomSheetDialogFragment {
 
     public static final String EXTRA_ACCESS_TOKEN = "EAT";
     public static final String EXTRA_SUBREDDIT_NAME = "ESN";
+    public static final String EXTRA_VIEW_POST_DETAIL_FRAGMENT_ID = "EPFI";
     @BindView(R.id.progress_bar_flair_bottom_sheet_fragment)
     ProgressBar progressBar;
     @BindView(R.id.error_text_view_flair_bottom_sheet_fragment)
@@ -72,8 +76,14 @@ public class FlairBottomSheetFragment extends BottomSheetDialogFragment {
 
         ((Infinity) mActivity.getApplication()).getAppComponent().inject(this);
 
+        long viewPostFragmentId = getArguments().getLong(EXTRA_VIEW_POST_DETAIL_FRAGMENT_ID, -1);
         mAdapter = new FlairBottomSheetRecyclerViewAdapter(mActivity, mCustomThemeWrapper, flair -> {
-            ((FlairSelectionCallback) mActivity).flairSelected(flair);
+            if (viewPostFragmentId <= 0) {
+                //PostXXXActivity
+                ((FlairSelectionCallback) mActivity).flairSelected(flair);
+            } else {
+                EventBus.getDefault().post(new FlairSelectedEvent(viewPostFragmentId, flair));
+            }
             dismiss();
         });
 

app/src/main/java/ml/docilealligator/infinityforreddit/events/FlairSelectedEvent.java

@@ -0,0 +1,13 @@
+package ml.docilealligator.infinityforreddit.events;
+
+import ml.docilealligator.infinityforreddit.Flair;
+
+public class FlairSelectedEvent {
+    public long viewPostDetailFragmentId;
+    public Flair flair;
+
+    public FlairSelectedEvent(long viewPostDetailFragmentId, Flair flair) {
+        this.viewPostDetailFragmentId = viewPostDetailFragmentId;
+        this.flair = flair;
+    }
+}

app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewPostDetailFragment.java

@@ -88,6 +88,7 @@ import ml.docilealligator.infinityforreddit.customviews.CustomToroContainer;
 import ml.docilealligator.infinityforreddit.events.ChangeNSFWBlurEvent;
 import ml.docilealligator.infinityforreddit.events.ChangeNetworkStatusEvent;
 import ml.docilealligator.infinityforreddit.events.ChangeSpoilerBlurEvent;
+import ml.docilealligator.infinityforreddit.events.FlairSelectedEvent;
 import ml.docilealligator.infinityforreddit.events.PostUpdateEventToDetailActivity;
 import ml.docilealligator.infinityforreddit.events.PostUpdateEventToPostList;
 import ml.docilealligator.infinityforreddit.message.ReadMessage;
@@ -191,6 +192,8 @@ public class ViewPostDetailFragment extends Fragment implements FragmentCommunic
     String sortType;
     @State
     boolean mRespectSubredditRecommendedSortType;
+    @State
+    long viewPostDetailFragmentId;
     private ViewPostDetailActivity activity;
     private RequestManager mGlide;
     private Locale mLocale;
@@ -262,6 +265,7 @@ public class ViewPostDetailFragment extends Fragment implements FragmentCommunic
         mExpandChildren = !mSharedPreferences.getBoolean(SharedPreferencesUtils.SHOW_TOP_LEVEL_COMMENTS_FIRST, false);
         if (savedInstanceState == null) {
             mRespectSubredditRecommendedSortType = mSharedPreferences.getBoolean(SharedPreferencesUtils.RESPECT_SUBREDDIT_RECOMMENDED_COMMENT_SORT_TYPE, false);
+            viewPostDetailFragmentId = System.currentTimeMillis();
         }
 
         mGlide = Glide.with(this);
@@ -915,6 +919,7 @@ public class ViewPostDetailFragment extends Fragment implements FragmentCommunic
             Bundle bundle = new Bundle();
             bundle.putString(FlairBottomSheetFragment.EXTRA_ACCESS_TOKEN, mAccessToken);
             bundle.putString(FlairBottomSheetFragment.EXTRA_SUBREDDIT_NAME, mPost.getSubredditName());
+            bundle.putLong(FlairBottomSheetFragment.EXTRA_VIEW_POST_DETAIL_FRAGMENT_ID, viewPostDetailFragmentId);
             flairBottomSheetFragment.setArguments(bundle);
             flairBottomSheetFragment.show(activity.getSupportFragmentManager(), flairBottomSheetFragment.getTag());
             return true;
@@ -1724,6 +1729,13 @@ public class ViewPostDetailFragment extends Fragment implements FragmentCommunic
         }
     }
 
+    @Subscribe
+    public void onFlairSelectedEvent(FlairSelectedEvent event) {
+        if (event.viewPostDetailFragmentId == viewPostDetailFragmentId) {
+            changeFlair(event.flair);
+        }
+    }
+
     @Override
     public void onAttach(@NonNull Context context) {
         super.onAttach(context);