我正在尝试使用Flutter获得此结果;
我遇到了这种行为;代码;
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'dart:html' as html;
class OverlayAnimatedGridElement extends StatefulWidget {
OverlayAnimatedGridElement(this.imagepath, this.postDetail, this.postTitle);
final String imagepath;
final String postTitle;
final String postDetail;
@override
_OverlayAnimatedGridElementState createState() =>
_OverlayAnimatedGridElementState();
}
class _OverlayAnimatedGridElementState extends State<OverlayAnimatedGridElement>
with TickerProviderStateMixin {
AnimationController _controller;
Animation<double> _opacityTween;
bool isHovered = false;
@override
void initState() {
_controller =
AnimationController(vsync: this, duration: Duration(milliseconds: 500));
_opacityTween = Tween<double>(begin: 0, end: 1).animate(
CurvedAnimation(parent: _controller, curve: Curves.easeInOutCirc));
super.initState();
}
hoverActivation(hoverState) {
bool hoverState;
isHovered = hoverState;
if (isHovered = true) {
_controller.forward();
} else if (isHovered = false) {
_controller.reset();
}
print("activated");
}
@override
Widget build(BuildContext context) {
_opacityTween.addListener(() {
setState(() {
print(_opacityTween.value);
});
});
return MouseRegion(
onHover: hoverActivation(true),
child: Container(
constraints: BoxConstraints(maxHeight: 360, maxWidth: 640),
child: Stack(
alignment: Alignment.bottomCenter,
children: [
Image(image: AssetImage("${widget.imagepath}")),
Opacity(
opacity: _opacityTween.value,
child: Container(
color: Color.fromRGBO(128, 128, 128, 0.5),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.max,
children: [
Column(
mainAxisSize: MainAxisSize.min,
children: [
Text("${widget.postDetail}"),
Text("${widget.postTitle}")
],
),
],
),
),
),
],
),
),
);
}
}
一个独立的小部件可以正常工作,但当我将它放入gridview或pageview中时,当我滚动到它时,它会自动读取鼠标进入。
我尝试使用其他小部件,如Inkwell、Listener等,但没有解决方案。有人能指导我是否有更好的解决方案吗?
我该如何解决这个问题?
编辑:
现在遇到这个问题。MouseRegion 导致多个 controller.forwards。
MouseRegion
只接受这样的函数。 - Sajjad