Android: Make rescan on app start work again

I haven't fully confirmed why the previous commit broke this,
but I imagine it's due to AfterDirectoryInitializationRunner
executing in a different order than before, resulting in
startRescan running before startLoad.

1 files changed, 21 insertions, 3 deletions

diff --git a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/services/GameFileCacheManager.java b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/services/GameFileCacheManager.java
index eaa2f3524f..2364a3800c 100644
--- a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/services/GameFileCacheManager.java
+++ b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/services/GameFileCacheManager.java
@@ -26,6 +26,7 @@ public final class GameFileCacheManager
   private static GameFileCache gameFileCache = null;
   private static final MutableLiveData<GameFile[]> gameFiles =
           new MutableLiveData<>(new GameFile[]{});
+  private static boolean runRescanAfterLoad = false;
 
   private static final ExecutorService executor = Executors.newFixedThreadPool(1);
   private static final MutableLiveData<Boolean> loadInProgress = new MutableLiveData<>(false);
@@ -135,7 +136,8 @@ public final class GameFileCacheManager
   /**
    * Asynchronously scans for games in the user's configured folders,
    * updating the game file cache with the results.
-   * If startLoad hasn't been called before this, this has no effect.
+   * If loading the game file cache hasn't started or hasn't finished,
+   * the execution of this will be postponed until it finishes.
    */
   public static void startRescan(Context context)
   {
@@ -190,17 +192,33 @@ public final class GameFileCacheManager
       }
     }
 
+    if (runRescanAfterLoad)
+    {
+      rescanInProgress.postValue(true);
+    }
+
     loadInProgress.postValue(false);
+
+    if (runRescanAfterLoad)
+    {
+      runRescanAfterLoad = false;
+      rescan();
+    }
   }
 
   /**
    * Scans for games in the user's configured folders,
    * updating the game file cache with the results.
-   * If load hasn't been called before this, this has no effect.
+   * If load hasn't been called before this, the execution of this
+   * will be postponed until after load runs.
    */
   private static void rescan()
   {
-    if (gameFileCache != null)
+    if (gameFileCache == null)
+    {
+      runRescanAfterLoad = true;
+    }
+    else
     {
       String[] gamePaths = GameFileCache.getAllGamePaths();