Rework DB to have artist data separated into Artist table. Rework refresh notifications to be more in line with actions with multiple fragments. Filed bug against what I'm seeing on artist fragment.

https://github.com/thorbenprimke/realm-recyclerview/issues/4

app/src/main/java/com/magnatune/eyecreate/companionformagnatune/adapters/AlbumsAdapter.java

@@ -31,7 +31,7 @@ public class AlbumsAdapter extends RealmBasedRecyclerViewAdapter<Album,AlbumView
 
     @Override
     public void onBindRealmViewHolder(final AlbumViewHolder albumViewHolder, int i) {
-        albumViewHolder.artistName.setText(realmResults.get(i).getArtist());
+        albumViewHolder.artistName.setText(realmResults.get(i).getArtist().getArtistname());
         albumViewHolder.albumName.setText(realmResults.get(i).getAlbumname());
         Picasso.with(albumViewHolder.itemView.getContext()).load(realmResults.get(i).getCover_small()).into(albumViewHolder.albumArt, new Callback() {
             @Override

app/src/main/java/com/magnatune/eyecreate/companionformagnatune/adapters/ArtistsAdapter.java

@@ -0,0 +1,31 @@
+package com.magnatune.eyecreate.companionformagnatune.adapters;
+
+import android.content.Context;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.magnatune.eyecreate.companionformagnatune.R;
+import com.magnatune.eyecreate.companionformagnatune.model.Artist;
+import com.magnatune.eyecreate.companionformagnatune.viewholders.ArtistViewHolder;
+
+import io.realm.RealmBasedRecyclerViewAdapter;
+import io.realm.RealmResults;
+
+public class ArtistsAdapter extends RealmBasedRecyclerViewAdapter<Artist,ArtistViewHolder> {
+
+    public ArtistsAdapter(Context context, RealmResults<Artist> realmResults, boolean automaticUpdate, boolean animateResults, boolean addSectionHeaders, String headerColumnName) {
+        super(context, realmResults, automaticUpdate, animateResults, addSectionHeaders, headerColumnName);
+    }
+
+    @Override
+    public ArtistViewHolder onCreateRealmViewHolder(ViewGroup viewGroup, int i) {
+        View v = inflater.inflate(R.layout.listitem_artist,viewGroup,false);
+        ArtistViewHolder holder = new ArtistViewHolder(v);
+        return holder;
+    }
+
+    @Override
+    public void onBindRealmViewHolder(ArtistViewHolder artistViewHolder, int i) {
+        artistViewHolder.artistName.setText(realmResults.get(i).getArtistname());
+    }
+}

app/src/main/java/com/magnatune/eyecreate/companionformagnatune/fragments/AlbumsFragment.java

@@ -49,17 +49,9 @@ public class AlbumsFragment extends Fragment {
             }
         });
         recyclerView.setAdapter(new AlbumsAdapter(getActivity(), db.where(Album.class).findAllSorted("albumname"), true, true, null));
-        recyclerView.post(new Runnable() {
+        if (db.where(Album.class).findAll().size() < 1) {
-            @Override
-            public void run() {
-                if(db.where(Album.class).findAll().size()<1) {
-                    recyclerView.setRefreshing(true);
             triggerDBUpdate();
-                } else if(!MagnatuneDBManager.isProcessingDone()) {
-                    recyclerView.setRefreshing(true);
         }
-            }
-        });
         return recyclerView;
     }
 
@@ -82,6 +74,12 @@ public class AlbumsFragment extends Fragment {
     @Override
     public void onResume() {
         super.onResume();
+        recyclerView.post(new Runnable() {
+            @Override
+            public void run() {
+                recyclerView.setRefreshing(!MagnatuneDBManager.isProcessingDone());
+            }
+        });
         LocalBroadcastManager.getInstance(getActivity()).registerReceiver(refreshDone,new IntentFilter(MagnatuneDBManager.ACTION_DB_UPDATE_DONE));
     }
 

app/src/main/java/com/magnatune/eyecreate/companionformagnatune/fragments/ArtistFragment.java

@@ -1,19 +1,91 @@
 package com.magnatune.eyecreate.companionformagnatune.fragments;
 
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.AsyncTask;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v4.app.Fragment;
+import android.support.v4.content.LocalBroadcastManager;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
 import com.magnatune.eyecreate.companionformagnatune.R;
+import com.magnatune.eyecreate.companionformagnatune.adapters.ArtistsAdapter;
+import com.magnatune.eyecreate.companionformagnatune.model.Artist;
+import com.magnatune.eyecreate.companionformagnatune.model.MagnatuneDBManager;
+
+import co.moonmonkeylabs.realmrecyclerview.RealmRecyclerView;
+import io.realm.Realm;
 
 public class ArtistFragment extends Fragment {
+
+    Realm db;
+    RealmRecyclerView recyclerView;
+    BroadcastReceiver refreshDone = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            recyclerView.setRefreshing(false);
+        }
+    };
+
     @Nullable
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
-        View v = inflater.inflate(R.layout.fragment_artists,container,false);
+        recyclerView = (RealmRecyclerView) inflater.inflate(R.layout.fragment_artists,container,false);
-        return v;
+        recyclerView.setOnRefreshListener(new RealmRecyclerView.OnRefreshListener() {
+            @Override
+            public void onRefresh() {
+                triggerDBUpdate();
+            }
+        });
+        recyclerView.setAdapter(new ArtistsAdapter(getActivity(), db.where(Artist.class).findAllSorted("artistname"), true, true,true,"artistname"));
+        if (db.where(Artist.class).findAll().size() < 1) {
+            triggerDBUpdate();
+        }
+        return recyclerView;
+    }
+
+    private void triggerDBUpdate() {
+        new AsyncTask<Void, Void, Void>() {
+            @Override
+            protected Void doInBackground(Void... voids) {
+                MagnatuneDBManager.updateDB();
+                return null;
+            }
+        }.execute();
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        db = MagnatuneDBManager.getAlbumDB();
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        db.close();
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        recyclerView.post(new Runnable() {
+            @Override
+            public void run() {
+                recyclerView.setRefreshing(!MagnatuneDBManager.isProcessingDone());
+            }
+        });
+        LocalBroadcastManager.getInstance(getActivity()).registerReceiver(refreshDone, new IntentFilter(MagnatuneDBManager.ACTION_DB_UPDATE_DONE));
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        LocalBroadcastManager.getInstance(getActivity()).unregisterReceiver(refreshDone);
     }
 }

app/src/main/java/com/magnatune/eyecreate/companionformagnatune/model/Album.java

@@ -11,11 +11,9 @@ public class Album extends RealmObject {
     @PrimaryKey
     private String albumsku;
     private String albumname;
-    private String artist;
+    private Artist artist;
-    private String artistdesc;
     private String cover_small;
     private String cover_large;
-    private String artistphoto;
     private int year;
     private String album_notes;
     private String homepage;
@@ -40,22 +38,14 @@ public class Album extends RealmObject {
         this.albumname = albumname;
     }
 
-    public String getArtist() {
+    public Artist getArtist() {
         return artist;
     }
 
-    public void setArtist(String artist) {
+    public void setArtist(Artist artist) {
         this.artist = artist;
     }
 
-    public String getArtistdesc() {
-        return artistdesc;
-    }
-
-    public void setArtistdesc(String artistdesc) {
-        this.artistdesc = artistdesc;
-    }
-
     public String getCover_small() {
         return cover_small;
     }
@@ -72,14 +62,6 @@ public class Album extends RealmObject {
         this.cover_large = cover_large;
     }
 
-    public String getArtistphoto() {
-        return artistphoto;
-    }
-
-    public void setArtistphoto(String artistphoto) {
-        this.artistphoto = artistphoto;
-    }
-
     public int getYear() {
         return year;
     }

app/src/main/java/com/magnatune/eyecreate/companionformagnatune/model/Artist.java

@@ -0,0 +1,35 @@
+package com.magnatune.eyecreate.companionformagnatune.model;
+
+import io.realm.RealmObject;
+import io.realm.annotations.PrimaryKey;
+
+public class Artist extends RealmObject {
+    @PrimaryKey
+    private String artistname;
+    private String artistdesc;
+    private String artistphoto;
+
+    public String getArtistname() {
+        return artistname;
+    }
+
+    public void setArtistname(String artistname) {
+        this.artistname = artistname;
+    }
+
+    public String getArtistdesc() {
+        return artistdesc;
+    }
+
+    public void setArtistdesc(String artistdesc) {
+        this.artistdesc = artistdesc;
+    }
+
+    public String getArtistphoto() {
+        return artistphoto;
+    }
+
+    public void setArtistphoto(String artistphoto) {
+        this.artistphoto = artistphoto;
+    }
+}

app/src/main/java/com/magnatune/eyecreate/companionformagnatune/model/MagnatuneDBManager.java

@@ -100,15 +100,17 @@ public class MagnatuneDBManager {
     }
 
     public static Album xmlAlbumToDBAlbum(com.magnatune.eyecreate.companionformagnatune.model.xml.Album album) {
+        Artist artist = new Artist();
+        artist.setArtistname(album.artist);
+        artist.setArtistdesc(album.artistdesc);
+        artist.setArtistphoto(album.artistphoto);
         Album entry = new Album();
         entry.setAlbumsku(album.albumsku);
         entry.setAlbumname(album.albumname);
-        entry.setArtist(album.artist);
+        entry.setArtist(artist);
-        entry.setArtistdesc(album.artistdesc);
         entry.setAlbum_notes(album.album_notes);
         entry.setCover_small(album.cover_small);
         entry.setCover_large(album.cover_small.replace("200", "800"));
-        entry.setArtistphoto(album.artistphoto);
         entry.setYear(album.year);
         entry.setHomepage(album.home);
         entry.setMp3genre(album.mp3genre);

app/src/main/java/com/magnatune/eyecreate/companionformagnatune/viewholders/ArtistViewHolder.java

@@ -0,0 +1,18 @@
+package com.magnatune.eyecreate.companionformagnatune.viewholders;
+
+import android.view.View;
+import android.widget.TextView;
+
+import com.magnatune.eyecreate.companionformagnatune.R;
+
+import io.realm.RealmViewHolder;
+
+public class ArtistViewHolder extends RealmViewHolder {
+
+    public TextView artistName;
+
+    public ArtistViewHolder(View itemView) {
+        super(itemView);
+        artistName = (TextView) itemView.findViewById(R.id.artist_name);
+    }
+}

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

@@ -4,6 +4,6 @@
     android:layout_height="match_parent"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/artist_list"
-    app:rrvLayoutType="LinearLayout"
+    app:rrvLayoutType="LinearLayoutWithHeaders"
     app:rrvIsRefreshable="true"
     xmlns:android="http://schemas.android.com/apk/res/android" />

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

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical" android:layout_width="match_parent"
+    android:layout_margin="10dp"
+    android:paddingTop="5dp"
+    android:paddingBottom="5dp"
+    android:background="?attr/selectableItemBackground"
+    android:layout_height="match_parent">
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:id="@+id/artist_name"/>
+</LinearLayout>