Vuetify toggle between light and dark theme (with vuex)

问题

so in my Vue-project I basically have two pages/components that will be shown with the use of vue-router depending on the url. I can switch between those pages/components via a button.

I am also using vuex for the management of some data.

Now I included a switch in one of the components to toggle between a dark and a light theme from vuetify. In the template for this component I do:

<v-switch
  label="Toggle dark them"
  @change="toggleDarkTheme()"
></v-switch>

And in the function that gets called I do:

toggleDarkTheme() {
      this.$vuetify.theme.dark = !this.$vuetify.theme.dark;
      console.log(this.$vuetify.theme.dark);
},

In app.vue I have included the <v-app dark> and in my main.js i have the following:

Vue.use(Vuetify);
const vuetify = new Vuetify({
  theme: {
    // dark: true,
    themes: {
      light: {
        primary: colors.purple,
        secondary: colors.grey.darken1,
        accent: colors.shades.black,
        error: colors.red.accent3,
        background: colors.indigo.lighten5, 
      },
      dark: {
        primary: colors.blue.lighten3,
        background: colors.indigo.base,
      },
    },
  },
});

Vue.config.productionTip = false;

new Vue({
  router,
  store,
  vuetify,
  render: (h) => h(App),
}).$mount('#app');

So my problem now is, when I click the switch, the theme is indeed toggled from light to dark mode in this component. Light mode is the default and when i click the switch once, I get dark theme. However when i click the button to switch to the other url, there the light theme will be used. How do I implement this feature correctly?

Thanks in advance!

回答1:

You should have a JavaScript class called vuetify.js, that should look like this in your case.

import Vue from "vue";
import Vuetify from "vuetify/lib";

Vue.use(Vuetify);

export default new Vuetify({
  theme: {
    themes: {
      light: {
        primary: colors.purple,
        secondary: colors.grey.darken1,
        accent: colors.shades.black,
        error: colors.red.accent3,
        background: colors.indigo.lighten5
      },
      dark: {
        primary: colors.blue.lighten3,
        background: colors.indigo.base
      }
    }
  }
});

Your switch should be working, but just in case, try this button I've made in your component.

    <div>
      <v-tooltip v-if="!$vuetify.theme.dark" bottom>
        <template v-slot:activator="{ on }">
          <v-btn v-on="on" color="info" small fab @click="darkMode">
            <v-icon class="mr-1">mdi-moon-waxing-crescent</v-icon>
          </v-btn>
        </template>
        <span>Dark Mode On</span>
      </v-tooltip>

      <v-tooltip v-else bottom>
        <template v-slot:activator="{ on }">
          <v-btn v-on="on" color="info" small fab @click="darkMode">
            <v-icon color="yellow">mdi-white-balance-sunny</v-icon>
          </v-btn>
        </template>
        <span>Dark Mode Off</span>
      </v-tooltip>
    </div>

The Button calls this method in your <script>

darkMode() {
      this.$vuetify.theme.dark = !this.$vuetify.theme.dark;
    }

来源：https://stackoverflow.com/questions/62005958/vuetify-toggle-between-light-and-dark-theme-with-vuex

标签

Vue.js

switch-statement

themes

vuex

vuetify.js