commit 3aa087c6cc4d3c1adafaada813006664bec29558
author Mehmet Fidanboylu <mehmetf@users.noreply.github.com> Thu Aug 08 12:05:43 2019 -0700
committer GitHub <noreply@github.com> Thu Aug 08 12:05:43 2019 -0700
tree a7acfd4e317b7d74ba1c5c43932211b37342fe8a
parent 90456140529265140971c6b9b9772d6c95173961

Fix bug in camera example. (#1958)

packages/camera/example/lib/main.dart

diff --git a/packages/camera/example/lib/main.dart b/packages/camera/example/lib/main.dart
index 2e2aa4d..10b0ff9 100644
--- a/packages/camera/example/lib/main.dart
+++ b/packages/camera/example/lib/main.dart
@@ -52,6 +52,10 @@
 
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
+    // App state changed before we got the chance to initialize.
+    if (controller == null || !controller.value.isInitialized) {
+      return;
+    }
     if (state == AppLifecycleState.inactive) {
       controller?.dispose();
     } else if (state == AppLifecycleState.resumed) {