ステータスバーの色を合わせる処理を移植

feature/library/src/main/java/one/nem/lacerta/feature/library/LibraryPageFragment.java

@@ -150,6 +150,25 @@ public class LibraryPageFragment extends Fragment {
                 this.currentTotalItemCount = libraryItemPage.getListItems().size();
             });
         }
+
+
+        // Set status bar color
+        AppBarLayout appBarLayout = view.findViewById(R.id.app_bar_layout);
+        appBarLayout.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() {
+            @Override
+            public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
+                if (Math.abs(verticalOffset) == appBarLayout.getTotalScrollRange()) {
+                    // Collapsed
+                    getActivity().getWindow().setStatusBarColor(ContextCompat.getColor(getContext(), one.nem.lacerta.shared.ui.R.color.colorSecondaryContainer));
+                } else if (verticalOffset == 0) {
+                    // Expanded
+                    getActivity().getWindow().setStatusBarColor(ContextCompat.getColor(getContext(), one.nem.lacerta.shared.ui.R.color.colorSurface));
+                } else {
+                    // Somewhere in between
+                    // Here you can add a color transition if you want
+                }
+            }
+        });
     }
 
     @Override

feature/library/src/main/res/layout/fragment_library_top.xml

@@ -29,7 +29,7 @@
                 app:layout_scrollFlags="scroll|exitUntilCollapsed">
 
                 <androidx.appcompat.widget.Toolbar
-                    android:id="@+id/toolbar"
+                    android:id="@+id/library_toolbar"
                     android:layout_width="match_parent"
                     android:layout_height="?attr/actionBarSize"
                     app:layout_collapseMode="pin"