如何使用 vue 3 在 ionic 7 中单击底部选项卡时清除缓存

Question

嗨，我面临缓存问题，根据框架，这是期望的行为，但我不想

看到我想要获取的缓存页面是新鲜的。

问题：如何在单击任何底部选项卡时清除视图缓存。当我们在第 2 页并转到其他选项卡然后再次单击它时，就会出现真正的问题，它将显示第 2 页的内容。

这是我的问题：

Package.json

"dependencies": {
   "@ionic/vue": "^7.0.0",
   "vue": "^3.2.45",
}

TabsPage.vue

<template>
  <ion-page>
    <ion-tabs>
      <ion-router-outlet></ion-router-outlet>
      <ion-tab-bar slot="bottom">

        <ion-tab-button tab="tab2" href="/tabs/tasks/project">
          <ion-icon aria-hidden="true" :icon="ellipse" />
          <ion-label>Taks</ion-label>
        </ion-tab-button>

        <ion-tab-button tab="tab3" href="/tabs/tab1">
          <ion-icon aria-hidden="true" :icon="ellipse" />
          <ion-label>About</ion-label>
        </ion-tab-button>

      </ion-tab-bar>
    </ion-tabs>
  </ion-page>
</template>

<script setup>
import { IonTabBar, IonTabButton, IonTabs, IonLabel, IonIcon, IonPage, IonRouterOutlet } from '@ionic/vue';
import { ellipse, square, triangle } from 'ionicons/icons';
</script>

请帮助我提前致谢，仍在等待答复！！

Answer 1

In Ionic 7 with Vue 3, you can clear the cache on click of bottom tabs by using the router and utilizing the router.replace method. This method replaces the current route without adding it to the history stack, effectively clearing the cache.

Here's a simple example:


<template>
  <ion-tabs>
    <ion-tab-bar slot="bottom">
      <ion-tab-button @click="navigateToTab('/tab1')">
        <ion-icon :icon="homeOutline"></ion-icon>
        <ion-label>Tab 1</ion-label>
      </ion-tab-button>

      <ion-tab-button @click="navigateToTab('/tab2')">
        <ion-icon :icon="appsOutline"></ion-icon>
        <ion-label>Tab 2</ion-label>
      </ion-tab-button>
    </ion-tab-bar>
  </ion-tabs>
</template>

<script>
import { IonTabs, IonRouterOutlet, IonTabBar, IonTabButton, IonIcon, IonLabel } from '@ionic/vue';
import { homeOutline, appsOutline } from 'ionicons/icons';
import { defineComponent } from 'vue';

export default defineComponent({
  components: {
    IonTabs,
    IonRouterOutlet,
    IonTabBar,
    IonTabButton,
    IonIcon,
    IonLabel,
  },
  data() {
    return {
      homeOutline,
      appsOutline,
    };
  },
  methods: {
    navigateToTab(tabPath) {
      // Use router.replace to clear the cache when switching tabs
      this.$router.replace(tabPath);
    },
  },
});
</script>

<style scoped>
/* Add your styles here */
</style>