How to create app initialization guide page in uniapp

UniApp is an open source framework with cross-platform application development capabilities, which can support running on multiple platforms once written. When developing UniApp applications, we usually need to add some initialization boot pages to introduce the basic functions of the application to users. Today we will introduce how to make an app initialization boot page in UniApp.

1. Create a guide page component

Create a new component in the components directory of UniApp, named guide-page, and add it in Write the following code in the component:

<template>
  <div class="guide-page">
    <swiper :autoplay="false" :loop="false" :pagination="{ clickable: true }">
      <swiper-item v-for="(item, index) in guideItems" :key="index">
        <div class="guide-item">
          <img :src="item.image" class="guide-image" />
          <div class="guide-desc">{{ item.desc }}</div>
        </div>
      </swiper-item>
    </swiper>
    <div class="guide-btn" @click="onBtnClick">{{ isLastPage ? '立即体验' : '下一页' }}</div>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        guideItems: [], // 引导页内容
        currentIndex: 0, // 当前页码
      };
    },
    computed: {
      isLastPage() {
        return this.currentIndex === this.guideItems.length - 1;
      },
    },
    methods: {
      // 按钮点击事件
      onBtnClick() {
        if (this.isLastPage) {
          // 到达最后一页，触发回调函数
          this.$emit('complete');
        } else {
          // 下一页
          this.currentIndex += 1;
        }
      },
    },
  };
</script>

<style>
  /* 样式省略 */
</style>

In this code, we create a Swiper slider component and place the guide page content in it. Among the configuration parameters of Swiper, the autoplay attribute indicates whether to automatically start the carousel, the loop attribute indicates whether to loop and slide, and the pagination attribute can configure the paginator style.

The guide page component also provides a button to allow users to turn pages or complete browsing the guide page. When the button is clicked, we will trigger different callback functions based on whether the current page is the last page. In order to dynamically load different guide pages in Swiper, we also declare a guideItems array to save the content of the guide page.

2. Use the boot page component in the App.vue component

In order to have the boot page component automatically displayed when the application starts, we need to insert it into the top-level router in the App.vue component Below the -view component, the code is as follows:

<template>
  <div id="app">
    <router-view />
    <guide-page v-if="showGuide" @complete="onGuideComplete" />
  </div>
</template>

<script>
import GuidePage from '@/components/guide-page';

export default {
  components: {
    GuidePage,
  },
  data() {
    return {
      showGuide: true, // 是否展示引导页
    };
  },
  methods: {
    // 引导页完成回调
    onGuideComplete() {
      this.showGuide = false;
    },
  },
};
</script>

In this code, we first introduce the guide-page component and register it in the component declaration. We also define a showGuide variable to control whether to display the guide page.

When the application starts, we will check whether the boot page needs to be displayed in the onLaunch life cycle function. If display is required, set the showGuide variable to true. In App.vue, we use the v-if directive to determine whether the guide page needs to be displayed, and set the showGuide variable to false when the complete event is triggered. to end the show.

3. Add content to the boot page

Now we have implemented a basic boot page component, but we still need to add specific content to it, such as application introduction, novice guide, etc. .

Suppose we need to add an application introduction content, we can follow the following steps:

1. Create a guide-image# in the static directory ##Directory, used to store boot page images.
Save the text of the application introduction in the
2. guideItems array, the code is as follows:

data() {
  return {
    guideItems: [
      {
        image: '/static/guide-image/01.png',
        desc: '这里是应用介绍，可以向用户介绍应用的基本功能。',
      },
      {
        image: '/static/guide-image/02.png',
        desc: '这里是新手指南，可以告诉用户如何快速上手。',
      },
      {
        image: '/static/guide-image/03.png',
        desc: '这里是高级功能，可以介绍一些比较复杂的操作。',
      },
    ],
    currentIndex: 0, // 当前页码
  };
},

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In
3. /static/guide-imageIn the directory, add the guide page image corresponding to the guideItems array.

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