Vue实现移动端页面切换效果

找了好多博客实现效果都……emmm……

应用Vue自带的过渡《进入/离开 & 列表过渡》和嵌套路由和 fixed定位实现

其实还是挺简单的。

在子页面把整个页面做绝对定位，覆盖整个屏幕，子父页面将 router-view 用 transition 套起来，并加上过渡动画就可以啦。

代码：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no">
  <title>Document</title>
  <style>
    * { padding: 0; margin: 0; }
    html, body, #app { width: 100%; height: 100%; }
    .one { height: 100%; background-color: yellow; }
    .two { background-color: tomato; position: fixed; top: 0; bottom: 0; left: 0; right: 0; }
    .three { background-color: #ffe69f; position: fixed; top: 0; bottom: 0; left: 0; right: 0; }
    .v-enter-active, .v-leave-active { transition: all 0.3s; }
    .v-enter, .v-leave-to { transform: translateX(100%); }
  </style>
</head>
<body>
  <div id="app">
    <div class="one">
      <p>
        <router-link to="/foo">下一层</router-link>
      </p>
      <h1>第一层</h1>
    </div>
    <transition>
      <router-view></router-view>
    </transition>
  </div>

  <script src="https://unpkg.com/vue/dist/vue.js"></script>
  <script src="https://unpkg.com/vue-router/dist/vue-router.js"></script>
  <script>
    const Foo = {
      template: `
        <div class="whole-page two">
          <router-link to="/foo/bar">下一层</router-link>
          <router-link to="/">返回</router-link>
          <h1>第二层</h1>
          <transition>
            <router-view></router-view>
          </transition>
        </div>
      `
    }
    const Bar = {
      template: `
        <div class="whole-page three">
          <router-link to="/foo">返回</router-link>
          <h1>第三层</h1>
          <transition>
            <router-view></router-view>
          </transition>
        </div>
      `
    }
    const routes = [ 
      { path: '/foo', component: Foo, children: [ { path: 'bar', component: Bar } ] }
    ]
    const router = new VueRouter({ routes })
    const app = new Vue({ router }).$mount('#app')
  </script>
</body>
</html>

效果：

有一个问题需要注意一下，

我们知道，在应用transform属性的时候，fixed定位会变成absolute。

这里，页面转换的时候，就变成了相对translation定位。所以如果子页面中有绝对定位的话，移动的过程中页面会变形。

简单举个栗子，

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no">
  <title>Document</title>
  <style>
* { padding: 0; margin: 0; }
html, body, #app { width: 100%; height: 100%; }
#app { padding-top: 50px; }
.one { height: 100%; background-color: yellow;}
.two { background-color: tomato; position: fixed; top: 100px; bottom: 0; left: 0; right: 0; }.v-enter-active, .v-leave-active { transition: all 0.3s; }
.v-enter, .v-leave-to { transform: translateX(100%); }
header { height: 50px; background-color: #000; width: 100%; position: fixed; top: 0; color: #fff; line-height: 50px; text-align: center; }
.two header { top: 50px; background-color: #666; }
  </style>
</head>
<body>
  <div id="app">
    <header>我是一个标题</header>
    <div class="one">
      <p>
        <router-link to="/foo">下一层</router-link>
      </p>
      <h1>第一层</h1>
      <transition>
        <router-view></router-view>
      </transition>
    </div>
  </div>

  <script src="https://unpkg.com/vue/dist/vue.js"></script>
  <script src="https://unpkg.com/vue-router/dist/vue-router.js"></script>
  <script>
    const Foo = {
      template: `
        <div class="whole-page two">
          <router-link to="/">返回</router-link>
          <header>我也是一个标题</header>
          <h1>第二层</h1>
          <transition>
            <router-view></router-view>
          </transition>
        </div>
      `
    }
    const routes = [ 
      { path: '/foo', component: Foo }
    ]
    const router = new VueRouter({ routes })
    const app = new Vue({ router }).$mount('#app')
  </script>
</body>
</html>

看下效果：

OKOK，反正就是这种bug嘛。

解决办法就是，就是，尽量让页面fixed定位都是0 0 0 0，然后偏移用padding实现。

大概吧……反正我是这么解决的……

比如上面那个可以把CSS改成这样解决问题。

* { padding: 0; margin: 0; }
html, body, #app { width: 100%; height: 100%; }
#app { padding-top: 50px; }
.one { height: 100%; background-color: yellow;}
.two { background-color: tomato; position: fixed; top: 0; padding-top: 100px; bottom: 0; left: 0; right: 0; }.v-enter-active, .v-leave-active { transition: all 0.3s; }
.v-enter, .v-leave-to { transform: translateX(100%); }
header { height: 50px; background-color: #000; width: 100%; position: fixed; top: 0; color: #fff; line-height: 50px; text-align: center; z-index: 100; }
.two header { top: 50px; background-color: #666; }

嗯嗯还有一个问题，还有个滑动穿透的问题，（真开心! 这么多问题！

我再举个栗子，

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no">
  <title>Document</title>
  <style>
* { padding: 0; margin: 0; }
html, body, #app { width: 100%; height: 100%; }
.one { min-height: 100%; background-color: yellow;}
.two { background-color: tomato; position: fixed; top: 0; bottom: 0; left: 0; right: 0; }
.three { background-color: #ffe69f; position: fixed; top: 50px; bottom: 0; left: 0; right: 0; }
.v-enter-active, .v-leave-active { transition: all 0.3s; }
.v-enter, .v-leave-to { transform: translateX(100%); }
  </style>
</head>
<body>
  <div id="app">
    <div class="one">
      <p>
        <router-link to="/foo">下一层</router-link>
      </p>
      <h1>第一层</h1><h1>第一层</h1><h1>第一层</h1><h1>第一层</h1><h1>第一层</h1>
      <h1>第一层</h1><h1>第一层</h1><h1>第一层</h1><h1>第一层</h1><h1>第一层</h1>
      <h1>第一层</h1><h1>第一层</h1><h1>第一层</h1><h1>第一层</h1><h1>第一层</h1>
      <transition>
        <router-view></router-view>
      </transition>
    </div>
  </div>

  <script src="https://unpkg.com/vue/dist/vue.js"></script>
  <script src="https://unpkg.com/vue-router/dist/vue-router.js"></script>
  <script>
    const Foo = {
      template: `
        <div class="whole-page two">
          <router-link to="/">返回</router-link>
          <h1>第二层</h1>
          <transition>
            <router-view></router-view>
          </transition>
        </div>
      `
    }
    const routes = [ 
      { path: '/foo', component: Foo }
    ]
    const router = new VueRouter({ routes })
    const app = new Vue({ router }).$mount('#app')
  </script>
</body>
</html>