小编Zay*_*ayX的帖子

我试图用 Flutter 得到这个结果；

我有这种行为；

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 = …