颤振:自定义过渡(页面路由生成器)禁用英雄动画

Question

我目前正在尝试使用PageRouteBuilder进行自定义转换。但是，当我使用它时，我的英雄动画停止工作。

注意：它适用于其他过渡，甚至是其他自定义过渡。

EnterExitRoute.dart

import 'package:flutter/material.dart';
class EnterExitRoute extends PageRouteBuilder {
final Widget enterPage;
final Widget exitPage;
EnterExitRoute({this.exitPage, this.enterPage})
: super(
pageBuilder: (
BuildContext context,
Animation<double> animation,
Animation<double> secondaryAnimation,
) {
return enterPage;
} ,
transitionsBuilder: (
BuildContext context,
Animation<double> animation,
Animation<double> secondaryAnimation,
Widget child,
) {
return Stack(
children: <Widget>[
SlideTransition(
position: new Tween<Offset>(
begin: const Offset(0.0, 0.0),
end: const Offset(-1.0, 0.0),
).animate(animation),
child: exitPage,
),
SlideTransition(
position: new Tween<Offset>(
begin: const Offset(1.0, 0.0),
end: Offset.zero,
).animate(animation),
child: enterPage,
)
],
);
}
);
}

我的猜测是英雄动画跟不上SlideTransition。

关于如何解决这个问题的任何想法？

Answer 1

正如 pskink 所说，问题在于没有使用childref。

这是更新和工作代码

import 'package:flutter/material.dart';
class EnterExitRoute extends PageRouteBuilder {
final Widget enterPage;
final Widget exitPage;
EnterExitRoute({this.exitPage, this.enterPage})
: super(
pageBuilder: (
BuildContext context,
Animation<double> animation,
Animation<double> secondaryAnimation,
) {
return enterPage;
} ,
transitionsBuilder: (
BuildContext context,
Animation<double> animation,
Animation<double> secondaryAnimation,
Widget child,
) {
var curvedAnimation = CurvedAnimation(
parent: animation,
curve: Curves.ease,
);
return Stack(
children: <Widget>[
SlideTransition(
position: new Tween<Offset>(
begin: const Offset(0.0, 0.0),
end: const Offset(-1.0, 0.0),
).animate(curvedAnimation),
child: exitPage,
),
SlideTransition(
position: new Tween<Offset>(
begin: const Offset(1.0, 0.0),
end: Offset.zero,
).animate(curvedAnimation),
child: child,
)
],
);
}
);
}