Fixed invisible nav buttons on pre Android Q

lib/main.dart

@@ -9,6 +9,7 @@ import 'package:permission_handler/permission_handler.dart';
 import 'package:provider/provider.dart';
 import 'package:workmanager/workmanager.dart';
 import 'package:dynamic_color/dynamic_color.dart';
+import 'package:device_info_plus/device_info_plus.dart';
 
 const String currentReleaseTag =
     'v0.1.7-beta'; // KEEP THIS IN SYNC WITH GITHUB RELEASES
@@ -43,10 +44,12 @@ void bgTaskCallback() {
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  SystemChrome.setSystemUIOverlayStyle(
-    const SystemUiOverlayStyle(systemNavigationBarColor: Colors.transparent),
-  );
-  SystemChrome.setEnabledSystemUIMode(SystemUiMode.edgeToEdge);
+  if ((await DeviceInfoPlugin().androidInfo).version.sdkInt! >= 29) {
+    SystemChrome.setSystemUIOverlayStyle(
+      const SystemUiOverlayStyle(systemNavigationBarColor: Colors.transparent),
+    );
+    SystemChrome.setEnabledSystemUIMode(SystemUiMode.edgeToEdge);
+  }
   Workmanager().initialize(
     bgTaskCallback,
   );

pubspec.lock

@@ -92,6 +92,48 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.7.8"
+  device_info_plus:
+    dependency: "direct main"
+    description:
+      name: device_info_plus
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.1.2"
+  device_info_plus_linux:
+    dependency: transitive
+    description:
+      name: device_info_plus_linux
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.0"
+  device_info_plus_macos:
+    dependency: transitive
+    description:
+      name: device_info_plus_macos
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.0"
+  device_info_plus_platform_interface:
+    dependency: transitive
+    description:
+      name: device_info_plus_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.0"
+  device_info_plus_web:
+    dependency: transitive
+    description:
+      name: device_info_plus_web
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.0"
+  device_info_plus_windows:
+    dependency: transitive
+    description:
+      name: device_info_plus_windows
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.0.0"
   dynamic_color:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -50,6 +50,7 @@ dependencies:
   url_launcher: ^6.1.5
   permission_handler: ^10.0.0
   fluttertoast: ^8.0.9
+  device_info_plus: ^4.1.2
 
 
 dev_dependencies: