fix

com.unity.uiwidgets/Runtime/material/about.cs

 using Unity.UIWidgets.scheduler2;
 using Unity.UIWidgets.ui;
 using Unity.UIWidgets.widgets;
-using DialogUtils = Unity.UIWidgets.material.DialogUtils;
 using TextStyle = Unity.UIWidgets.painting.TextStyle;
 
 namespace Unity.UIWidgets.material {
         ) {
             D.assert(context != null);
             D.assert(useRootNavigator != null);
-            DialogUtils.showDialog<object>(
+            showDialog<object>(
-                builder: (BuildContext context) => {
+                builder: (BuildContext buildContext) => {
                     return new AboutDialog(
                         applicationName: applicationName,
                         applicationVersion: applicationVersion,
             D.assert(context != null);
             D.assert(useRootNavigator != null);
             Navigator.of(context, rootNavigator: useRootNavigator).push(new MaterialPageRoute(
-                builder: (BuildContext context) => new LicensePage(
+                builder: (BuildContext buildContext) => new LicensePage(
                     applicationName: applicationName,
                     applicationVersion: applicationVersion,
                     applicationIcon: applicationIcon,
                     ),
                     new FlatButton(
                         child: new Text(MaterialLocalizations.of(context).closeButtonLabel),
-                        onPressed: () => { Navigator.pop(context); }
+                        onPressed: () => { Navigator.pop<object>(context); }
                     )
                 },
                 scrollable: true
                 // or text direction.
                 body: new Localizations(
                     locale: new Locale("en", "US"),
-                    context: context,
+                    // context: context,
                     child: new DefaultTextStyle(
                         style: Theme.of(context).textTheme.caption,
                         child: new SafeArea(
             // can provide an explicit applicationName to the widgets defined in this
             // file, instead of relying on the default.
             Title ancestorTitle = context.findAncestorWidgetOfExactType<Title>();
-            return ancestorTitle?.title ?? Platform.resolvedExecutable.split(Platform.pathSeparator).last;
+            return ancestorTitle?.title ;//?? Platform.resolvedExecutable.split(Platform.pathSeparator).last;
         }
 
         internal static string _defaultApplicationVersion(BuildContext context) {

com.unity.uiwidgets/Runtime/material/date_picker.cs

                 );
             }
 
-            return DialogUtils.showDialog(
+            return material_.showDialog<object>(
                 context: context,
                 builder: (BuildContext _context) => { return builder == null ? child : builder(_context, child); }
             );

com.unity.uiwidgets/Runtime/material/dialog.cs

 
             if (actions != null) {
                 actionsWidget = new Padding(
-                    padding: actionsPadding,
+                    padding: (EdgeInsets)actionsPadding,
-                        buttonPadding: buttonPadding,
-                        overflowDirection: actionsOverflowDirection,
-                        overflowButtonSpacing: actionsOverflowButtonSpacing,
+                        // buttonPadding: buttonPadding,
+                        // overflowDirection: actionsOverflowDirection,
+                        // overflowButtonSpacing: actionsOverflowButtonSpacing,
                         children: actions
                     )
                 );

com.unity.uiwidgets/Runtime/material/flat_button.cs

 using Unity.UIWidgets.service;
 using Unity.UIWidgets.ui;
 using Unity.UIWidgets.widgets;
-using Brightness = Unity.UIWidgets.service.Brightness;
 
 namespace Unity.UIWidgets.material {
     public class FlatButton : MaterialButton {