From 83c36eb5165bd4b9a6059f081adc4f412660a210 Mon Sep 17 00:00:00 2001
From: Qun Cheng <chengqunq@gmail.com>
Date: Mon, 18 Sep 2023 20:24:59 +0800
Subject: [PATCH] Use platformBrightnessOf to detect system brightness

---
 experimental/material_3_demo/lib/main.dart | 3 +--
 material_3_demo/lib/main.dart              | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/experimental/material_3_demo/lib/main.dart b/experimental/material_3_demo/lib/main.dart
index 5a0ec563b..cc6cd5565 100644
--- a/experimental/material_3_demo/lib/main.dart
+++ b/experimental/material_3_demo/lib/main.dart
@@ -31,8 +31,7 @@ class _AppState extends State<App> {
   bool get useLightMode {
     switch (themeMode) {
       case ThemeMode.system:
-        return View.of(context).platformDispatcher.platformBrightness ==
-            Brightness.light;
+        return MediaQuery.platformBrightnessOf(context) == Brightness.light;
       case ThemeMode.light:
         return true;
       case ThemeMode.dark:
diff --git a/material_3_demo/lib/main.dart b/material_3_demo/lib/main.dart
index 5a0ec563b..cc6cd5565 100644
--- a/material_3_demo/lib/main.dart
+++ b/material_3_demo/lib/main.dart
@@ -31,8 +31,7 @@ class _AppState extends State<App> {
   bool get useLightMode {
     switch (themeMode) {
       case ThemeMode.system:
-        return View.of(context).platformDispatcher.platformBrightness ==
-            Brightness.light;
+        return MediaQuery.platformBrightnessOf(context) == Brightness.light;
       case ThemeMode.light:
         return true;
       case ThemeMode.dark: