Added the ability to sort items in the artist catalogue

app/src/main/java/com/cappielloantonio/play/adapter/ArtistCatalogueAdapter.java

@@ -18,11 +18,14 @@ import androidx.recyclerview.widget.RecyclerView;
 import com.bumptech.glide.load.resource.bitmap.RoundedCorners;
 import com.cappielloantonio.play.R;
 import com.cappielloantonio.play.glide.CustomGlideRequest;
+import com.cappielloantonio.play.model.Album;
 import com.cappielloantonio.play.model.Artist;
 import com.cappielloantonio.play.ui.activity.MainActivity;
 import com.cappielloantonio.play.util.MusicUtil;
 
 import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
 import java.util.List;
 import java.util.Objects;
 
@@ -160,4 +163,17 @@ public class ArtistCatalogueAdapter extends RecyclerView.Adapter<ArtistCatalogue
             return true;
         }
     }
+
+    public void sort(String order) {
+        switch (order) {
+            case Artist.ORDER_BY_NAME:
+                artists.sort(Comparator.comparing(Artist::getName));
+                break;
+            case Artist.ORDER_BY_RANDOM:
+                Collections.shuffle(artists);
+                break;
+        }
+
+        notifyDataSetChanged();
+    }
 }

app/src/main/java/com/cappielloantonio/play/model/Artist.java

@@ -20,6 +20,9 @@ public class Artist implements Parcelable {
     public static final String DOWNLOADED = "DOWNLOADED";
     public static final String STARRED = "STARRED";
 
+    public static final String ORDER_BY_NAME = "ORDER_BY_NAME";
+    public static final String ORDER_BY_RANDOM = "ORDER_BY_RANDOM";
+
     private List<Album> albums;
     private List<Artist> similarArtists;
 

app/src/main/java/com/cappielloantonio/play/ui/fragment/ArtistCatalogueFragment.java

@@ -11,6 +11,7 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputMethodManager;
+import android.widget.PopupMenu;
 import android.widget.SearchView;
 
 import androidx.annotation.NonNull;
@@ -25,6 +26,8 @@ import com.cappielloantonio.play.R;
 import com.cappielloantonio.play.adapter.ArtistCatalogueAdapter;
 import com.cappielloantonio.play.databinding.FragmentArtistCatalogueBinding;
 import com.cappielloantonio.play.helper.recyclerview.GridItemDecoration;
+import com.cappielloantonio.play.model.Album;
+import com.cappielloantonio.play.model.Artist;
 import com.cappielloantonio.play.ui.activity.MainActivity;
 import com.cappielloantonio.play.viewmodel.ArtistCatalogueViewModel;
 
@@ -113,6 +116,8 @@ public class ArtistCatalogueFragment extends Fragment {
             hideKeyboard(v);
             return false;
         });
+
+        bind.artistListSortImageView.setOnClickListener(view -> showPopupMenu(view, R.menu.sort_artist_popup_menu));
     }
 
     @Override
@@ -144,4 +149,23 @@ public class ArtistCatalogueFragment extends Fragment {
         InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
         imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
     }
+
+    private void showPopupMenu(View view, int menuResource) {
+        PopupMenu popup = new PopupMenu(requireContext(), view);
+        popup.getMenuInflater().inflate(menuResource, popup.getMenu());
+
+        popup.setOnMenuItemClickListener(menuItem -> {
+            if (menuItem.getItemId() == R.id.menu_artist_sort_name) {
+                artistAdapter.sort(Artist.ORDER_BY_NAME);
+                return true;
+            } else if (menuItem.getItemId() == R.id.menu_artist_sort_random) {
+                artistAdapter.sort(Artist.ORDER_BY_RANDOM);
+                return true;
+            }
+
+            return false;
+        });
+
+        popup.show();
+    }
 }

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

@@ -41,6 +41,24 @@
                     app:layout_constraintBottom_toBottomOf="parent"
                     app:layout_constraintEnd_toEndOf="parent"
                     app:layout_constraintStart_toEndOf="parent" />
+
+                <Button
+                    android:id="@+id/artist_list_sort_image_view"
+                    style="@style/Widget.Material3.Button.TonalButton.Icon"
+                    android:layout_width="52dp"
+                    android:layout_height="52dp"
+                    android:layout_marginStart="16dp"
+                    android:layout_marginTop="16dp"
+                    android:layout_marginEnd="16dp"
+                    android:layout_marginBottom="12dp"
+                    android:insetLeft="0dp"
+                    android:insetTop="0dp"
+                    android:insetRight="0dp"
+                    android:insetBottom="0dp"
+                    app:cornerRadius="30dp"
+                    app:icon="@drawable/ic_sort_list"
+                    app:layout_constraintBottom_toBottomOf="parent"
+                    app:layout_constraintEnd_toEndOf="parent" />
             </androidx.constraintlayout.widget.ConstraintLayout>
         </com.google.android.material.appbar.AppBarLayout>
 

app/src/main/res/menu/sort_artist_popup_menu.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:id="@+id/menu_artist_sort_name"
+        android:title="@string/menu_sort_name" />
+    <item
+        android:id="@+id/menu_artist_sort_random"
+        android:title="@string/menu_sort_random" />
+</menu>