toout vas bien

code/app/src/main/java/projet/iut/jeu_de_la_vie/view/LauncherActivity.java

@@ -32,12 +32,8 @@ public class LauncherActivity extends AppCompatActivity {
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        if (savedInstanceState != null){
+        manager = new Manager();
-        }
+        setContentView(R.layout.jeu_de_la_vie);
-        else {
-            manager = new Manager();
-            setContentView(R.layout.jeu_de_la_vie);
-        }
         DisplayMetrics disp = new DisplayMetrics();
         getWindowManager().getDefaultDisplay().getMetrics(disp);
         width = disp.widthPixels;