enchancement(handler): handle nil on alerts

facebook · Dec 20, 2022 · 79f32b4 · 79f32b4
1 parent 9f78517
commit 79f32b4
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/React/CoreModules/RCTAlertController.m b/React/CoreModules/RCTAlertController.m
@@ -20,10 +20,17 @@ @implementation RCTAlertController
 - (UIWindow *)alertWindow
 {
   if (_alertWindow == nil) {
-    _alertWindow = [[UIWindow alloc] initWithFrame:RCTSharedApplication().keyWindow.bounds];
+  UIWindow *keyWindow = RCTSharedApplication().keyWindow;
+  if (keyWindow) {
+    _alertWindow = [[UIWindow alloc] initWithFrame:keyWindow.bounds];
     _alertWindow.rootViewController = [UIViewController new];
     _alertWindow.windowLevel = UIWindowLevelAlert + 1;
+  } else {
+    // keyWindow is nil, so we cannot create and initialize _alertWindow
+    NSLog(@"Unable to create alert window: keyWindow is nil");
   }
+}
+
   return _alertWindow;
 }