Check for deleted songs when entering backgrounded app

__init__.py

@@ -84,8 +84,6 @@ class PetalHero(Application):
         self.show_artist = False
         self.reentry = False
 
-        readme.install()
-
     #def show_icons(self): return True
 
     def load(self):
@@ -332,6 +330,10 @@ class PetalHero(Application):
         if self.reentry:
             self.reentry = False
             return
+        if self.vm.direction == ViewTransitionDirection.FORWARD:
+            readme.install()
+            if self.select:
+                self.select.refresh()
         self.load()
         media.set_volume(1.0)
         media.load(self.path + '/sounds/menu.mp3')

select.py

@@ -115,6 +115,13 @@ class SelectView(BaseView):
                 self.play()
             return False
 
+    def refresh(self):
+        for song in list(self.songs):
+            if not os.path.exists(song.dirName + '/song.ini'):
+                self.songs.remove(song)
+                self._sc.set_position(0)
+                self._sc.set_item_count(len(self.songs))
+
     def draw(self, ctx: Context) -> None:
         
         utils.background(ctx)