How does uniapp implement the function of obtaining QQ friend status?

With the rapid development of mobile Internet, people's demand for real-time communication is also getting higher and higher. As a cross-platform instant messaging software, QQ not only implements various communication methods such as text, voice, and video, but also allows users to check the online status of their friends. However, under the uniapp framework, how to obtain QQ friend status?

1. Introduction to uniapp

uni-app is a front-end framework launched by DCloud based on Vue.js to develop cross-platform applications. In uni-app, developers only need to write a set of codes to quickly build applications that are adapted to multiple mobile platforms (including iOS, Android and various small program platforms). Compared with traditional front-end frameworks, uni-app not only has high development efficiency, but also has better performance.

2. How to implement QQ friend status

In uni-app, we can use the uni.request() method to initiate a network request to the QQ server to obtain the online status of the current friend . The main idea is as follows:

1. Get the unique identifier of QQ friends (i.e. QQ number).
2. Use the QQ number to generate the corresponding URL address, and then initiate an HTTP request to the QQ server.
3. After the QQ server receives the HTTP request, it will return the current friend's online status to the application.

The following is a simple sample code:

<template>
  <div class="status">
    <button @click="updateStatus">获取好友状态</button>
    <div v-if="isOnline">{{friend}}在线</div>
    <div v-else>{{friend}}不在线</div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      friend: '123456',
      isOnline: false
    };
  },
  methods: {
    updateStatus() {
      const url =
        'https://wpa.qq.com/msgrd?v=3&uin=' +
        this.friend +
        '&site=default&source=qq';

      uni.request({
        url: url,
        success: (res) => {
          if (res.statusCode === 200) {
            this.isOnline = true;
          } else {
            this.isOnline = false;
          }
        },
        fail: () => {
          uni.showToast({
            title: '获取好友状态失败，请稍后再试。',
            icon: 'none'
          });
        }
      });
    }
  }
};
</script>

In the above code, we trigger the updateStatus() method by clicking the button, which will request friend status information from the QQ server. And assign the result to the isOnline variable. Then, we display the corresponding text information on the interface based on the value of the variable.

3. Summary

Through learning the uniapp framework, we can quickly implement the function of obtaining QQ friend status and be compatible with multiple platforms. I believe that as the mobile Internet continues to develop, the uniapp framework will be used by more developers to implement more useful applications.

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