clean up code

example/lib/main.dart

@@ -4,7 +4,7 @@ import 'package:ijkplayer_example/page/index.dart';
 
 void main() {
   IjkConfig.isLog = true;
-  // IjkConfig.level = LogLevel.verbose;
+//  IjkConfig.level = LogLevel.verbose;
   IjkManager.initIJKPlayer();
   runApp(MyApp());
 }

example/pubspec.lock

@@ -80,7 +80,7 @@ packages:
       name: pedantic
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.4.0"
+    version: "1.5.0"
   photo:
     dependency: "direct main"
     description:
@@ -113,7 +113,7 @@ packages:
       name: source_span
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.5.4"
+    version: "1.5.5"
   stack_trace:
     dependency: transitive
     description:
@@ -164,4 +164,4 @@ packages:
     source: hosted
     version: "2.0.8"
 sdks:
-  dart: ">=2.1.0 <3.0.0"
+  dart: ">=2.2.0 <3.0.0"

lib/src/widget/controller_widget_builder.dart

@@ -114,7 +114,7 @@ class _DefaultControllerWidgetState extends State<DefaultControllerWidget>
     }
 
     progressTimer?.cancel();
-    progressTimer = Timer.periodic(Duration(milliseconds: 400), (timer) {
+    progressTimer = Timer.periodic(Duration(milliseconds: 350), (timer) {
       LogUtils.verbose("timer will call refresh info");
       controller.refreshVideoInfo();
     });
@@ -271,11 +271,11 @@ class _DefaultControllerWidgetState extends State<DefaultControllerWidget>
     if (targetSeek < videoInfo.duration) await controller.play();
   }
 
-  bool verticalDraging = false;
+  bool verticalDragging = false;
   bool leftVerticalDrag;
 
   void _onVerticalDragStart(DragStartDetails details) {
-    verticalDraging = true;
+    verticalDragging = true;
     var width = UIHelper.findGlobalRect(currentKey).width;
     var dx =
         UIHelper.globalOffsetToLocal(currentKey, details.globalPosition).dx;
@@ -283,7 +283,7 @@ class _DefaultControllerWidgetState extends State<DefaultControllerWidget>
   }
 
   void _onVerticalDragUpdate(DragUpdateDetails details) async {
-    if (verticalDraging == false) return;
+    if (verticalDragging == false) return;
 
     String text = "";
     IconData iconData = Icons.volume_up;
@@ -338,7 +338,7 @@ class _DefaultControllerWidgetState extends State<DefaultControllerWidget>
   }
 
   void _onVerticalDragEnd(DragEndDetails details) async {
-    verticalDraging = false;
+    verticalDragging = false;
     leftVerticalDrag = null;
     hideTooltip();