Fix fab does not show in MultiReditListingFragment when first entering SubscribedThingListingActivity.

app/src/main/java/ml/docilealligator/infinityforreddit/Activity/SubscribedThingListingActivity.java

@@ -1,5 +1,6 @@
 package ml.docilealligator.infinityforreddit.Activity;
 
+import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.Build;
 import android.os.Bundle;
@@ -19,6 +20,7 @@ import androidx.viewpager.widget.ViewPager;
 
 import com.google.android.material.appbar.AppBarLayout;
 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
 import com.google.android.material.tabs.TabLayout;
 import com.r0adkll.slidr.Slidr;
 import com.r0adkll.slidr.model.SlidrInterface;
@@ -77,6 +79,8 @@ public class SubscribedThingListingActivity extends BaseActivity implements Acti
     TabLayout tabLayout;
     @BindView(R.id.view_pager_subscribed_thing_listing_activity)
     ViewPager viewPager;
+    @BindView(R.id.fab_subscribed_thing_listing_activity)
+    public FloatingActionButton fab;
     @Inject
     @Named("oauth")
     Retrofit mOauthRetrofit;
@@ -124,6 +128,13 @@ public class SubscribedThingListingActivity extends BaseActivity implements Acti
             if (isImmersiveInterface()) {
                 window.setFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS, WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
                 adjustToolbar(toolbar);
+
+                int navBarHeight = getNavBarHeight();
+                if (navBarHeight > 0) {
+                    CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) fab.getLayoutParams();
+                    params.bottomMargin = navBarHeight;
+                    fab.setLayoutParams(params);
+                }
             }
         }
 
@@ -163,6 +174,7 @@ public class SubscribedThingListingActivity extends BaseActivity implements Acti
         coordinatorLayout.setBackgroundColor(mCustomThemeWrapper.getBackgroundColor());
         applyAppBarLayoutAndToolbarTheme(appBarLayout, toolbar);
         applyTabLayoutTheme(tabLayout);
+        applyFABTheme(fab);
     }
 
     private void getCurrentAccountAndInitializeViewPager() {
@@ -178,6 +190,10 @@ public class SubscribedThingListingActivity extends BaseActivity implements Acti
     }
 
     private void initializeViewPagerAndLoadSubscriptions() {
+        fab.setOnClickListener(view -> {
+            Intent intent = new Intent(this, CreateMultiRedditActivity.class);
+            startActivity(intent);
+        });
         sectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
         viewPager.setAdapter(sectionsPagerAdapter);
         viewPager.setOffscreenPageLimit(3);
@@ -186,8 +202,14 @@ public class SubscribedThingListingActivity extends BaseActivity implements Acti
             public void onPageSelected(int position) {
                 if (position == 0) {
                     unlockSwipeRightToGoBack();
+                    fab.hide();
                 } else {
                     lockSwipeRightToGoBack();
+                    if (position == 1) {
+                        fab.hide();
+                    } else {
+                        fab.show();
+                    }
                 }
             }
         });

app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/MultiRedditListingFragment.java

@@ -1,9 +1,7 @@
 package ml.docilealligator.infinityforreddit.Fragment;
 
 import android.content.Context;
-import android.content.Intent;
 import android.content.SharedPreferences;
-import android.content.res.ColorStateList;
 import android.content.res.Resources;
 import android.os.Build;
 import android.os.Bundle;
@@ -15,7 +13,6 @@ import android.widget.LinearLayout;
 import android.widget.TextView;
 
 import androidx.annotation.NonNull;
-import androidx.appcompat.app.AppCompatActivity;
 import androidx.fragment.app.Fragment;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.recyclerview.widget.LinearLayoutManager;
@@ -24,7 +21,6 @@ import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
 
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.RequestManager;
-import com.google.android.material.floatingactionbutton.FloatingActionButton;
 
 import javax.inject.Inject;
 import javax.inject.Named;
@@ -33,7 +29,6 @@ import butterknife.BindView;
 import butterknife.ButterKnife;
 import me.zhanghai.android.fastscroll.FastScrollerBuilder;
 import ml.docilealligator.infinityforreddit.Activity.BaseActivity;
-import ml.docilealligator.infinityforreddit.Activity.CreateMultiRedditActivity;
 import ml.docilealligator.infinityforreddit.Activity.SubscribedThingListingActivity;
 import ml.docilealligator.infinityforreddit.Adapter.MultiRedditListingRecyclerViewAdapter;
 import ml.docilealligator.infinityforreddit.CustomTheme.CustomThemeWrapper;
@@ -60,8 +55,6 @@ public class MultiRedditListingFragment extends Fragment implements FragmentComm
     ImageView mErrorImageView;
     @BindView(R.id.fetch_multi_reddit_listing_info_text_view_multi_reddit_listing_fragment)
     TextView mErrorTextView;
-    @BindView(R.id.fab_multi_reddit_listing_fragment)
-    FloatingActionButton fab;
     @Inject
     RedditDataRoomDatabase mRedditDataRoomDatabase;
     @Inject
@@ -74,7 +67,7 @@ public class MultiRedditListingFragment extends Fragment implements FragmentComm
     CustomThemeWrapper mCustomThemeWrapper;
 
     public MultiRedditViewModel mMultiRedditViewModel;
-    private AppCompatActivity mActivity;
+    private SubscribedThingListingActivity mActivity;
     private RequestManager mGlide;
     private LinearLayoutManager mLinearLayoutManager;
 
@@ -109,11 +102,6 @@ public class MultiRedditListingFragment extends Fragment implements FragmentComm
 
         mGlide = Glide.with(this);
 
-        fab.setOnClickListener(view -> {
-            Intent intent = new Intent(mActivity, CreateMultiRedditActivity.class);
-            startActivity(intent);
-        });
-
         mLinearLayoutManager = new LinearLayoutManager(mActivity);
         mRecyclerView.setLayoutManager(mLinearLayoutManager);
         MultiRedditListingRecyclerViewAdapter adapter = new MultiRedditListingRecyclerViewAdapter(mActivity,
@@ -124,9 +112,9 @@ public class MultiRedditListingFragment extends Fragment implements FragmentComm
             public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
                 super.onScrolled(recyclerView, dx, dy);
                 if (dy > 0) {
-                    fab.hide();
+                    mActivity.fab.hide();
                 } else {
-                    fab.show();
+                    mActivity.fab.show();
                 }
             }
         });
@@ -136,7 +124,7 @@ public class MultiRedditListingFragment extends Fragment implements FragmentComm
                 new MultiRedditViewModel.Factory(mActivity.getApplication(), mRedditDataRoomDatabase, accountName))
                 .get(MultiRedditViewModel.class);
 
-        mMultiRedditViewModel.getAllMultiReddits().observe(this, subscribedUserData -> {
+        mMultiRedditViewModel.getAllMultiReddits().observe(getViewLifecycleOwner(), subscribedUserData -> {
             if (subscribedUserData == null || subscribedUserData.size() == 0) {
                 mRecyclerView.setVisibility(View.GONE);
                 mErrorLinearLayout.setVisibility(View.VISIBLE);
@@ -149,7 +137,7 @@ public class MultiRedditListingFragment extends Fragment implements FragmentComm
             adapter.setMultiReddits(subscribedUserData);
         });
 
-        mMultiRedditViewModel.getAllFavoriteMultiReddits().observe(this, favoriteSubscribedUserData -> {
+        mMultiRedditViewModel.getAllFavoriteMultiReddits().observe(getViewLifecycleOwner(), favoriteSubscribedUserData -> {
             if (favoriteSubscribedUserData != null && favoriteSubscribedUserData.size() > 0) {
                 mErrorLinearLayout.setVisibility(View.GONE);
                 mRecyclerView.setVisibility(View.VISIBLE);
@@ -170,7 +158,7 @@ public class MultiRedditListingFragment extends Fragment implements FragmentComm
     @Override
     public void onAttach(@NonNull Context context) {
         super.onAttach(context);
-        mActivity = (AppCompatActivity) context;
+        mActivity = (SubscribedThingListingActivity) context;
     }
 
     @Override
@@ -184,8 +172,6 @@ public class MultiRedditListingFragment extends Fragment implements FragmentComm
         }
 
         mErrorTextView.setTextColor(mCustomThemeWrapper.getSecondaryTextColor());
-        fab.setBackgroundTintList(ColorStateList.valueOf(mCustomThemeWrapper.getColorPrimaryLightTheme()));
-        fab.setImageTintList(ColorStateList.valueOf(mCustomThemeWrapper.getFABIconColor()));
     }
 
     @Override

app/src/main/res/layout/activity_subscribed_thing_listing.xml

@@ -51,4 +51,13 @@
         android:layout_height="match_parent"
         app:layout_behavior="@string/appbar_scrolling_view_behavior" />
 
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
+        android:id="@+id/fab_subscribed_thing_listing_activity"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="@dimen/fab_margin"
+        android:layout_gravity="bottom|end"
+        android:visibility="gone"
+        app:srcCompat="@drawable/ic_add_day_night_24dp" />
+
 </androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/layout/fragment_multi_reddit_listing.xml

@@ -44,13 +44,4 @@
 
     </LinearLayout>
 
-    <com.google.android.material.floatingactionbutton.FloatingActionButton
-        android:id="@+id/fab_multi_reddit_listing_fragment"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_margin="@dimen/fab_margin"
-        android:layout_gravity="bottom|end"
-        app:srcCompat="@drawable/ic_add_day_night_24dp"
-        app:tint="@android:color/white" />
-
 </androidx.coordinatorlayout.widget.CoordinatorLayout>