shows error and not displaying ui

Question

shows error and not displaying ui

Closed this issue 7 years ago · 4 comments

\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M-! EXCEPTION CAUGHT BY SCHEDULER LIBRARY \M-b\M^U\M^^\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P
The following assertion was thrown during a scheduler callback:
There are multiple heroes that share the same tag within a subtree.
Within each subtree for which heroes are to be animated (typically a PageRoute subtree), each Hero
must have a unique non-null tag.
In this case, multiple heroes had the following tag:
Here is the subtree for one of the offending heroes:

Hero(tag: , state: _HeroState#4eb77)

\M-b\M^T\M^TKeyedSubtree-[GlobalKey#915b7]

\M-b\M^T\M^TMaterial(type: circle, elevation: 6.0, color: Color(0xff43a047), state: _MaterialState#8c254)

\M-b\M^T\M^TAnimatedPhysicalModel(duration: 200ms, shape: circle, borderRadius: BorderRadius.zero, elevation: 6.0, color: Color(0xff43a047), animateColor: false, shadowColor: Color(0xff000000), animateShadowColor: true, state: _AnimatedPhysicalModelState#c3b7d(ticker inactive))

\M-b\M^T\M^TPhysicalModel(shape: circle, borderRadius: BorderRadius.zero, elevation: 6.0, color: Color(0xff43a047), shadowColor: Color(0xff000000), renderObject: RenderPhysicalModel#9a3c8 relayoutBoundary=up7 NEEDS-PAINT)

\M-b\M^T\M^TNotificationListener

\M-b\M^T\M^T_InkFeatures-[GlobalKey#cb2fc ink renderer](renderObject: _RenderInkFeatures#99fe1 relayoutBoundary=up8 NEEDS-PAINT)

\M-b\M^T\M^TAnimatedDefaultTextStyle(duration: 200ms, debugLabel: (englishLike body1).merge(blackCupertino body1), inherit: false, color: Color(0xdd000000), family: .SF UI Text, size: 14.0, weight: 400, baseline: alphabetic, decoration: TextDecoration.none, softWrap: wrapping at box width, overflow: clip, state: _AnimatedDefaultTextStyleState#48817(ticker inactive))

\M-b\M^T\M^TDefaultTextStyle(debugLabel: (englishLike body1).merge(blackCupertino body1), inherit: false, color: Color(0xdd000000), family: .SF UI Text, size: 14.0, weight: 400, baseline: alphabetic, decoration: TextDecoration.none, softWrap: wrapping at box width, overflow: clip)

\M-b\M^T\M^TContainer(constraints: BoxConstraints(w=56.0, h=56.0))

\M-b\M^T\M^TConstrainedBox(BoxConstraints(w=56.0, h=56.0), renderObject: RenderConstrainedBox#99e2a relayoutBoundary=up9 NEEDS-PAINT)

\M-b\M^T\M^TInkWell(gestures: [tap], clipped to BoxShape.rectangle, state: _InkResponseState#1e762)

\M-b\M^T\M^TGestureDetector

\M-b\M^T\M^TRawGestureDetector(state: RawGestureDetectorState#1d357(gestures: [tap], behavior: opaque))

\M-b\M^T\M^T_GestureSemantics(renderObject: RenderSemanticsGestureHandler#a219c NEEDS-PAINT)

\M-b\M^T\M^TListener(listeners: [down], behavior: opaque, renderObject: RenderPointerListener#fc644 NEEDS-PAINT)

\M-b\M^T\M^TCenter(alignment: center, renderObject: RenderPositionedBox#31ff1 NEEDS-PAINT)

\M-b\M^T\M^TBuilder

\M-b\M^T\M^TIconTheme(color: Color(0xffffffff))

\M-b\M^T\M^TRotationTransition(animation: AlwaysStoppedAnimation#2f92b(\M-b\M^V\M-6 0.25; paused), state: _AnimatedState#bb655)

\M-b\M^T\M^TTransform(renderObject: RenderTransform#d0318 relayoutBoundary=up1 NEEDS-PAINT)

\M-b\M^T\M^TIcon(IconData(U+0E145))

\M-b\M^T\M^TSemantics(container: false, properties: SemanticsProperties#7e086, label: null, value: null, hint: null, renderObject: RenderSemanticsAnnotations#3b4c4 relayoutBoundary=up2 NEEDS-PAINT)

\M-b\M^T\M^TExcludeSemantics(excluding: true, renderObject: RenderExcludeSemantics#71537 relayoutBoundary=up3 NEEDS-PAINT)

\M-b\M^T\M^TSizedBox(width: 24.0, height: 24.0, renderObject: RenderConstrainedBox#31d75 relayoutBoundary=up4 NEEDS-PAINT)

\M-b\M^T\M^TCenter(alignment: center, renderObject: RenderPositionedBox#968b6 NEEDS-PAINT)

\M-b\M^T\M^TRichText(textDirection: ltr, softWrap: wrapping at box width, maxLines: unlimited, text: "\M-n\M^E\M^E", renderObject: RenderParagraph#a25eb relayoutBoundary=up1 NEEDS-PAINT)

When the exception was thrown, this was the stack:
#0 Hero._allHeroesFor.visitor. (package:flutter/src/widgets/heroes.dart:130)
#1 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:140)
#2 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#3 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#4 MultiChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4676)
#5 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#6 MultiChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4676)
#7 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#8 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4576)
#9 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#10 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#11 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#12 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#13 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#14 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4576)
#15 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#16 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#17 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#18 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4576)
#19 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#20 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#21 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#22 MultiChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4676)
#23 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#24 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#25 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#26 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#27 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#28 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#29 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#30 MultiChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4676)
#31 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#32 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#33 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#34 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#35 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#36 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4576)
#37 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#38 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#39 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#40 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4576)
#41 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#42 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#43 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#44 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#45 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#46 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#47 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#48 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#49 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#50 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#51 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#52 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#53 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#54 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4576)
#55 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#56 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#57 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#58 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#59 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#60 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#61 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#62 List.forEach (dart:core-patch/dart:core/growable_array.dart:274)
#63 SliverMultiBoxAdaptorElement.visitChildren (package:flutter/src/widgets/sliver.dart:866)
#64 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#65 MultiChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4676)
#66 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#67 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#68 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#69 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4576)
#70 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#71 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4576)
#72 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#73 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4576)
#74 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#75 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4576)
#76 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#77 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#78 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#79 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4576)
#80 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#81 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#82 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#83 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#84 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#85 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#86 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#87 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#88 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#89 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#90 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#91 MultiChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4676)
#92 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#93 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#94 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#95 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#96 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
setState() callback argument returned a Future.
2.3
#97 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4576)
#98 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#99 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#100 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#101 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:4576)
#102 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#103 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#104 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#105 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#106 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#107 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#108 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#109 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#110 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#111 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#112 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#113 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#114 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#115 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#116 Hero._allHeroesFor.visitor (package:flutter/src/widgets/heroes.dart:144)
#117 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3636)
#118 Element.visitChildElements (package:flutter/src/widgets/framework.dart:2610)
#119 Hero._allHeroesFor (package:flutter/src/widgets/heroes.dart:146)
#120 HeroController._startHeroTransition (package:flutter/src/widgets/heroes.dart:511)
#121 HeroController._maybeStartHeroTransition. (package:flutter/src/widgets/heroes.dart:492)
#122 BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:931)
#123 BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:879)
#124 BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:783)
#125 _invoke (file:///Users/Siva/flutter/bin/cache/pkg/sky_engine/lib/ui/hooks.dart:120)
#126 _drawFrame (file:///Users/Siva/flutter/bin/cache/pkg/sky_engine/lib/ui/hooks.dart:109)
\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P\M-b\M^U\M^P

Answer 1 · 2018-03-08T21:52:05.000Z

Sorry but I´m relatively new at Flutter/Dart and I have literally no idea what's happening, can you show me the code so I can help you and change whatever is failing in the library?

Answer 2 · 2018-04-10T02:42:31.000Z

I had this same problem. It's because each FloatingActionButton by default has a HeroTag, so if you have multiple FABs on screen at the same time, there is an error of duplicate HeroTag. A fix would be to either:

Generate within the library (behind the scenes from the user) and assign unique hero tags for each FAB used
Require a hero tag for each FAB

Change 2 is simple. See this commit on my fork of this repo. Sorry I fixed this for my scenario a while back but never got around to submitting a PR.

Answer 3 · 2018-04-16T10:05:49.000Z

I'm trying to fix this, but I never had this problem. Can you tell me how to reproduce it?

Answer 4 · 2018-04-17T18:55:10.000Z

Update fab_menu_item.dart to this to add the hero tag of the index:

part of flutter_fab_dialer;

typedef void OnFabMiniMenuItemPressed();

class FabMiniMenuItem {
   double elevation;
   String text;
   Icon icon;
   Color fabColor;
   Color chipColor;
   String tooltip;
   Color textColor;
   OnFabMiniMenuItemPressed onPressed;



   FabMiniMenuItem.withText(
      this.icon,
       this.fabColor,
       this.elevation,
       this.tooltip,
       this.onPressed,
       this.text,
       this.chipColor,
       this.textColor);

  FabMiniMenuItem.noText(this.icon,this.fabColor,this.elevation,this.tooltip,this.onPressed){
    this.text = null;
    this.chipColor = null;
    this.textColor = null;
  }


}

class FabMenuMiniItemWidget extends StatelessWidget {
  const FabMenuMiniItemWidget(
      {Key key,
      this.elevation,
      this.text,
      this.icon,
      this.fabColor,
      this.chipColor,
      this.textColor,
      this.tooltip,
      this.index,
      this.controller,
      this.onPressed})
      : super(key: key);
  final double elevation;
  final String text;
  final Icon icon;
  final Color fabColor;
  final Color chipColor;
  final String tooltip;
  final Color textColor;
  final int index;
  final OnFabMiniMenuItemPressed onPressed;
  final AnimationController controller;

  @override
  Widget build(BuildContext context) {
    return new Container(
        margin: new EdgeInsets.symmetric(vertical: 5.0, horizontal: 8.0),
        child: new Row(
          mainAxisAlignment: MainAxisAlignment.end,
          children: <Widget>[
            new Container(
                margin: new EdgeInsets.symmetric(horizontal: 8.0),
                child: new ScaleTransition(
                    scale: new CurvedAnimation(
                      parent: controller,
                      curve: new Interval(((index + 1) / 10), 1.0,
                          curve: Curves.linear),
                    ),
                    child: chipColor!=null
                        ?new Chip(
                      label: new Text(
                        text,
                        textAlign: TextAlign.center,
                        overflow: TextOverflow.ellipsis,
                        style: new TextStyle(
                            color: textColor, fontWeight: FontWeight.bold),
                      ),
                      backgroundColor: chipColor,
                    ):null)),
            new ScaleTransition(
              scale: new CurvedAnimation(
                parent: controller,
                curve:
                    new Interval(((index + 1) / 10), 1.0, curve: Curves.linear),
              ),
              child: new FloatingActionButton(
                  elevation: elevation,
                  mini: true,
                  heroTag: "$index",  //Add Hero Tag Here from Index
                  backgroundColor: fabColor,
                  tooltip: 'Increment',
                  child: icon,
                  onPressed: onPressed),
            )
          ],
        ));
  }
}