From f353cef1b0a0318b3c265dde4d3a2f12642b41b8 Mon Sep 17 00:00:00 2001
From: Jeff Mikels <jeffweb@mikels.cc>
Date: Thu, 19 Aug 2021 13:01:34 -0400
Subject: [PATCH] null safe

---
 example/lib/main.dart | 46 +++++++++++++++++++++++--------------------
 pubspec.yaml          |  4 ++--
 2 files changed, 27 insertions(+), 23 deletions(-)

diff --git a/example/lib/main.dart b/example/lib/main.dart
index bf59225..7a36b9c 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -21,7 +21,7 @@ class _MyAppState extends State<MyApp> {
   initPlatformState() async {
     bool keptOn = await Screen.isKeptOn;
     double brightness = await Screen.brightness;
-    setState((){
+    setState(() {
       _isKeptOn = keptOn;
       _brightness = brightness;
     });
@@ -33,26 +33,30 @@ class _MyAppState extends State<MyApp> {
       home: new Scaffold(
         appBar: new AppBar(title: new Text('Screen plugin example')),
         body: new Center(
-            child: new Column(
-                children: <Widget>[
-                  new Row(
-                    mainAxisAlignment: MainAxisAlignment.center,
-                    children: <Widget>[
-                      new Text("Screen is kept on ? "),
-                      new Checkbox(value: _isKeptOn, onChanged: (bool b){
-                        Screen.keepOn(b);
-                        setState((){_isKeptOn = b; });
-                      })
-                    ]
-                  ),
-                  new Text("Brightness :"),
-                  new Slider(value : _brightness, onChanged : (double b){
-                    setState((){_brightness = b;});
-                    Screen.setBrightness(b);
-                  })
-                ]
-            )
-        ),
+            child: new Column(children: <Widget>[
+          new Row(mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[
+            new Text("Screen is kept on ? "),
+            new Checkbox(
+                value: _isKeptOn,
+                onChanged: (bool? b) {
+                  if (b != null) {
+                    Screen.keepOn(b);
+                    setState(() {
+                      _isKeptOn = b;
+                    });
+                  }
+                })
+          ]),
+          new Text("Brightness :"),
+          new Slider(
+              value: _brightness,
+              onChanged: (double b) {
+                setState(() {
+                  _brightness = b;
+                });
+                Screen.setBrightness(b);
+              })
+        ])),
       ),
     );
   }
diff --git a/pubspec.yaml b/pubspec.yaml
index c3531d0..4d70bd2 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,11 +1,11 @@
 name: screen
 description: A Flutter plugin to manage the device's screen on Android and iOS.
-version: 0.0.5
+version: 0.0.6
 author: Clovis Nicolas <clovisnicolas0@gmail.com>
 homepage: https://github.com/clovisnicolas/flutter_screen
 
 environment:
-  sdk: '>=2.0.0 <3.0.0'
+  sdk: '>=2.12.0 <3.0.0'
 
 dependencies:
   flutter: