Завершить инженерный кандидат Stage 5

app/src/main/java/com/projectsacrifice/game/MainActivity.java

@@ -9,6 +9,7 @@ import android.view.WindowInsetsController;
 import android.view.WindowManager;
 
 public final class MainActivity extends Activity {
+    private static final String ACTIVE_SESSION_STATE = "active_session_v2";
     private GameView gameView;
 
     @Override
@@ -17,10 +18,23 @@ public final class MainActivity extends Activity {
         requestWindowFeature(Window.FEATURE_NO_TITLE);
         getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
         gameView = new GameView(this);
+        if (savedInstanceState != null) {
+            byte[] encoded = savedInstanceState.getByteArray(ACTIVE_SESSION_STATE);
+            if (encoded != null) gameView.restoreSessionFromActivityState(encoded);
+        }
         setContentView(gameView);
         hideSystemUi();
     }
 
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        if (gameView != null) {
+            byte[] encoded = gameView.saveSessionForActivityState();
+            if (encoded != null) outState.putByteArray(ACTIVE_SESSION_STATE, encoded);
+        }
+        super.onSaveInstanceState(outState);
+    }
+
     @Override
     public void onWindowFocusChanged(boolean hasFocus) {
         super.onWindowFocusChanged(hasFocus);