reactjs - React Router + 动画库问题 : components won't animate before unmounting with react-router-dom

Question

我有以下代码:

import React from "react";
import { BrowserRouter, Route, NavLink } from "react-router-dom";
import { AnimatePresence, motion } from "framer-motion";
import Hi from "./Hi";
import Something from "./Something";
import "./App.css";

const App = () => {
  return (
    <BrowserRouter>
      <AnimatePresence>
        <NavLink to="/">Hi</NavLink>
        <br />
        <NavLink to="/something">Something</NavLink>
        <hr />
        <Route path="/" exact={true} key="1">
          <motion.div
            initial={{ opacity: 0 }}
            animate={{ opacity: 1 }}
            exit={{ opacity: 0 }}
            transition={{ duration: 2 }}
            key="hi"
          >
            <Hi />
          </motion.div>
        </Route>
        <Route path="/something" exact={true} key="2">
          <motion.div
            initial={{ opacity: 0 }}
            animate={{ opacity: 1 }}
            exit={{ opacity: 0 }}
            key="something"
            transition={{ duration: 2 }}
          >
            <Something />
          </motion.div>
        </Route>
      </AnimatePresence>
    </BrowserRouter>
  );
};

export default App;

它应该在 <Hi/> 时执行淡入动画。和 <Something/>已安装，并在卸载时淡出。安装动画发生，但另一个没有。两个组件在动画效果开始前都卸载了，所有动画库都出现这个问题:framer-motion , react-transition-group ， 和别的。

Answer 1

不确定您是否仍在寻找答案，但我通过添加 exitBeforeEnter 解决了类似的问题。标志到 AnimatePresence .
所以...

//...
<AnimatePresence exitBeforeEnter>
        <NavLink to="/">Hi</NavLink>
        <br />
        <NavLink to="/something">Something</NavLink>
        <hr />
//...