在移动端使用vue-router和keep-alive的方法示例

// css
* {
 margin: 0;
 padding: 0;
 box-sizing: border-box;
}
html, body {
 height: 100%;
}
#app {
 height: 100%;
}

// html
<div id="app">
 <keep-alive>
  <router-view></router-view>
 </keep-alive>
</div>

// js
const Index = {
 name: 'Index',
 template:
 `<div>
  首页
  <div>
   <router-link :to="{ name: 'List' }">Go to List</router-link>
  </div>
 </div>`,
 mounted() {
  console.warn('Main', 'mounted');
 },
};

const List = {
 name: 'List',
 template: 
 `<div style="display: flex;flex-direction: column;height: 100%;">
  <div>列表页</div>
  <div style="flex: 1;overflow: scroll;">
   <div v-for="item in list" :key="item.id">
    <router-link style="line-height: 100px;display:block;" :to="{ name: 'Detail', params: { id: item.id } }">
     {{item.name}}
    </router-link>
   </div>
  </div>
  <div style="flex: 1;overflow: scroll;">
   <div v-for="item in list" :key="item.id">
    <router-link style="line-height: 100px;display:block;" :to="{ name: 'Detail', params: { id: item.id } }">
     {{item.name}}
    </router-link>
   </div>
  </div>
 </div>`,
 data() {
  return {
   list: new Array(10).fill(1).map((_,index) => {
    return {id: index + 1, name: `item${index + 1}`};
   }),
  };
 },
 mounted() {
  console.warn('List', 'mounted');
 },
 activated() {
  console.warn('List', 'activated');
 },
 deactivated() {
  console.warn('List', 'deactivated');
 },
};

const Detail = {
 name: 'Detail',
 template:
 `<div>
  详情页
  <div>
   {{$route.params.id}}
  </div>
 </div>`,
 mounted() {
  console.warn('Detail', 'mounted');
 },
};

const routes = [
 { path: '', name: 'Main', component: Index },
 { path: '/list', name: 'List', component: List },
 { path: '/detail/:id', name: 'Detail', component: Detail },
];

const router = new VueRouter({
 routes,
});

const app = new Vue({
 router,
}).$mount('#app');

// keep-alive
render () {
 const slot = this.$slots.default
 const vnode: VNode = getFirstComponentChild(slot)
 const componentOptions: ?VNodeComponentOptions = vnode && vnode.componentOptions
 if (componentOptions) {
  const name: ?string = getComponentName(componentOptions)
  const { include, exclude } = this
  if (
   (include && (!name || !matches(include, name))) ||
   (exclude && name && matches(exclude, name))
  ) {
   return vnode
  }

  const { cache, keys } = this
  const key: ?string = vnode.key == null
   ? componentOptions.Ctor.cid + (componentOptions.tag ? `::${componentOptions.tag}` : '')
   : vnode.key
  if (cache[key]) {
   vnode.componentInstance = cache[key].componentInstance
   remove(keys, key)
   keys.push(key)
  } else {
   cache[key] = vnode
   keys.push(key)
   if (this.max && keys.length > parseInt(this.max)) {
    pruneCacheEntry(cache, keys[0], keys, this._vnode)
   }
  }

  vnode.data.keepAlive = true
 }
 return vnode || (slot && slot[0])
}

updateRoute (route: Route) {
 const prev = this.current
 this.current = route
 this.cb && this.cb(route)
 this.router.afterHooks.forEach(hook => {
  hook && hook(route, prev)
 })
}

let dir = 1;
const includes = [];

const routerPush = router.push;
router.push = function push(...args) {
 dir = 1;
 routerPush.apply(router, args);
};

router.afterEach((to, from) => {
 if (dir === 1) {
  includes.push(to.name);
 } else if (dir === -1) {
  includes.pop();
 }
 dir = -1;
});

// html
<div id="app">
 <keep-alive :include="includes">
  <router-view></router-view>
 </keep-alive>
</div>

// js
const app = new Vue({
 router,
 data() {
  return {
   includes,
  };
 },
}).$mount('#app');

Vue.directive('keep-position', {
 bind(el, { value }) {
  const parent = positions[positions.length - 1];
  const obj = {
   x: 0,
   y: 0,
  };
  const key = value;
  parent[key] = obj;
  obj.el = el;
  obj.handler = function ({ currentTarget }) {
   obj.x = currentTarget.scrollLeft;
   obj.y = currentTarget.scrollTop;
  };
  el.addEventListener('scroll', obj.handler);
 },
});

const positions = [];

router.afterEach((to, from) => {
 if (dir === 1) {
  includes.push(to.name);
  positions.push({});
 }

 ...
});

router.afterEach((to, from) => {
 if (dir === 1) {
  includes.push(to.name);
  positions.push({});
 } else if (dir === -1) {
  includes.pop();
  unkeepPosition(positions.pop({}));
  restorePosition();
 }
 dir = -1;
});

const restorePosition = function () {
 Vue.nextTick(() => {
  const parent = positions[positions.length - 1];
  for (let key in parent) {
   const { el, x, y } = parent[key];
   el.scrollLeft = x;
   el.scrollTop = y;
  }
 });
};

const unkeepPosition = function (parent) {
 for (let key in parent) {
  const obj = parent[key];
  obj.el.removeEventListener('scroll', obj.handler);
 }
};

<div style="flex: 1;overflow: scroll;" v-keep-position="'list1'">
 <!-- -->
</div>
<div style="flex: 1;overflow: scroll;" v-keep-position="'list2'">
 <!-- -->
</div>