我在一行中生成2个FloatingActionButtons.路由到其文件时出现以下错误…
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 tag “Instance of ‘Object'”.
这是我的代码……
new Row(
mainAxisAlignment: MainAxisAlignment.center,children: <Widget>[
new FloatingActionButton(
child: new Icon(Icons.remove),onpressed: _decline),new Padding(padding: new EdgeInsets.all(10.0)),new Text(
_count.toString(),style: new TextStyle(
fontSize: 40.0,fontWeight: FontWeight.bold,color: Colors.black),),new FloatingActionButton(
child: new Icon(Icons.add),onpressed: _increment),],)
这是我如何路由到我的文件…
Navigator.push(context,new MaterialPageRoute(builder：(_)=> new Video.VideoPage()));
当我注释掉第一个FloatingActionButton时它工作正常.只有当它们都被使用时它才会出错.如果重要的话,My Row也是Column小部件的子代.
解决方法
尝试为每个FloatingActionButtons添加一个唯一的
heroTag,这样Flutter就不会将这两个按钮相互混淆,例如：
new Row(
mainAxisAlignment: MainAxisAlignment.center,children: <Widget>[
new FloatingActionButton(
heroTag: "Decline",child: new Icon(Icons.remove),new Text(
_count.toString(),style: new TextStyle(
fontSize: 40.0,new FloatingActionButton(
heroTag: "Increment",child: new Icon(Icons.add),
版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 dio@foxmail.com 举报，一经查实，本站将立刻删除。
