When you update an album cover from the tag editor, not only will the album detail screen update, the artist detail screen will when you go back to it too. This uses activity results.

app/src/main/java/com/kabouzeid/gramophone/ui/activities/AlbumDetailActivity.java

@@ -314,8 +314,10 @@ public class AlbumDetailActivity extends AbsFabActivity implements PaletteColorH
     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         super.onActivityResult(requestCode, resultCode, data);
-        if (requestCode == TAG_EDITOR_REQUEST)
+        if (requestCode == TAG_EDITOR_REQUEST) {
             setUpAlbumArtAndApplyPalette();
+            setResult(RESULT_OK);
+        }
     }
 
     @Subscribe

app/src/main/java/com/kabouzeid/gramophone/ui/activities/ArtistDetailActivity.java

@@ -1,6 +1,7 @@
 package com.kabouzeid.gramophone.ui.activities;
 
 import android.annotation.TargetApi;
+import android.content.Intent;
 import android.graphics.Bitmap;
 import android.graphics.Color;
 import android.os.Build;
@@ -78,6 +79,7 @@ public class ArtistDetailActivity extends AbsFabActivity implements PaletteColor
     private View songListHeader;
     private RecyclerView albumRecyclerView;
     private Spanned biography;
+    private ArtistAlbumAdapter albumAdapter;
 
     private final SmallObservableScrollViewCallbacks observableScrollViewCallbacks = new SmallObservableScrollViewCallbacks() {
         @Override
@@ -234,7 +236,7 @@ public class ArtistDetailActivity extends AbsFabActivity implements PaletteColor
     private void setUpAlbumRecyclerView() {
         albumRecyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false));
         List<Album> albums = ArtistAlbumLoader.getArtistAlbumList(this, artist.id);
-        ArtistAlbumAdapter albumAdapter = new ArtistAlbumAdapter(this, albums);
+        albumAdapter = new ArtistAlbumAdapter(this, albums);
         albumRecyclerView.setAdapter(albumAdapter);
     }
 
@@ -309,6 +311,13 @@ public class ArtistDetailActivity extends AbsFabActivity implements PaletteColor
         });
     }
 
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if (resultCode == RESULT_OK)
+            albumAdapter.notifyDataSetChanged();
+    }
+
     @Override
     public int getPaletteColor() {
         return toolbarColor;

app/src/main/java/com/kabouzeid/gramophone/util/NavigationUtil.java

@@ -61,7 +61,7 @@ public class NavigationUtil {
                 @SuppressWarnings("unchecked") ActivityOptionsCompat optionsCompat = ActivityOptionsCompat.makeSceneTransitionAnimation(activity,
                         sharedViews
                 );
-                ActivityCompat.startActivity(activity, intent, optionsCompat.toBundle());
+                ActivityCompat.startActivityForResult(activity, intent, 1001, optionsCompat.toBundle());
             } else {
                 activity.startActivity(intent);
             }