Hide FAB when RecyclerView in PostFragment is scrolling down.

3 files changed, 44 insertions, 1 deletions

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/MainActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/MainActivity.java
index 8be70369..f19f54b4 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/MainActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/MainActivity.java
@@ -399,6 +399,7 @@ public class MainActivity extends AppCompatActivity implements SortTypeBottomShe
 
             @Override
             public void onPageSelected(int position) {
+                fab.show();
                 if(isInLazyMode) {
                     if(position == sectionsPagerAdapter.getCurrentLazyModeFragmentPosition()) {
                         sectionsPagerAdapter.resumeLazyMode();
@@ -793,6 +794,14 @@ public class MainActivity extends AppCompatActivity implements SortTypeBottomShe
         }
     }
 
+    public void postScrollUp() {
+        fab.show();
+    }
+
+    public void postScrollDown() {
+        fab.hide();
+    }
+
     @Subscribe
     public void onAccountSwitchEvent(SwitchAccountEvent event) {
         if(!getClass().getName().equals(event.excludeActivityClassName)) {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/PostFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/PostFragment.java
index cade1c5a..a1267632 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/PostFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/PostFragment.java
@@ -189,11 +189,37 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
             return false;
         });
 
+        if(activity instanceof MainActivity) {
+            mPostRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
+                @Override
+                public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
+                    if (dy > 0) {
+                        ((MainActivity) activity).postScrollDown();
+                    } else if (dy < 0) {
+                        ((MainActivity) activity).postScrollUp();
+                    }
+
+                }
+            });
+        } else if(activity instanceof ViewSubredditDetailActivity) {
+            mPostRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
+                @Override
+                public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
+                    if (dy > 0) {
+                        ((ViewSubredditDetailActivity) activity).postScrollDown();
+                    } else if (dy < 0) {
+                        ((ViewSubredditDetailActivity) activity).postScrollUp();
+                    }
+
+                }
+            });
+        }
+
         int postType = getArguments().getInt(EXTRA_POST_TYPE);
         String sortType = getArguments().getString(EXTRA_SORT_TYPE);
         int filter = getArguments().getInt(EXTRA_FILTER);
         String accessToken = getArguments().getString(EXTRA_ACCESS_TOKEN);
-        boolean nsfw = mSharedPreferences.getBoolean(SharedPreferencesUtils.NSFW_KEY, true);
+        boolean nsfw = mSharedPreferences.getBoolean(SharedPreferencesUtils.NSFW_KEY, false);
 
         PostViewModel.Factory factory;
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java
index d37998e2..bf718932 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java
@@ -566,6 +566,14 @@ public class ViewSubredditDetailActivity extends AppCompatActivity implements So
         }
     }
 
+    public void postScrollUp() {
+        fab.show();
+    }
+
+    public void postScrollDown() {
+        fab.hide();
+    }
+
     @Subscribe
     public void onAccountSwitchEvent(SwitchAccountEvent event) {
         if(!getClass().getName().equals(event.excludeActivityClassName)) {