How to realize direct connection between two points in uniapp

With the advent of the mobile Internet era, more and more people are beginning to use smartphones for various operations in daily life, such as shopping, social networking, entertainment, etc. One of the more novel ones is the direct connection between two points through mobile phones. This kind of application scenario is relatively wide, such as navigation, voice calls, live broadcast, etc. This article will introduce how to use uniapp to realize a direct connection between two points and help you realize this application scenario.

1. Overview

uniapp is a cross-platform development framework that can be used to develop WeChat applets, H5, App and other applications. It has become one of the mainstreams of mobile Internet application development. This article will use uniapp to develop a two-point direct connection application, so that everyone can better understand the functions and characteristics of uniapp.

2. Environment configuration

This article will use the uniapp framework for development. You need to install the required development environment first, including Node.js, vue-cli, HBuilderX, etc. For specific environment configuration, please refer to the uniapp official documentation.

3. Implementation steps

1. Create a uniapp project

Use HBuilderX to create a uniapp project, select the template as uni-app, and click Create.

2. Log in to the Amap Developer Platform to obtain the key

Register an account and log in to the Amap Developer Platform, create an application and obtain the key. Add the Amap JS SDK library to the uniapp project and configure the key in config.js.

3. Implement map display

Create the index.vue page under the pages folder and use the map component for map display. The code is as follows:

<template>
    <view class="container">
        <map :style="{height:&#39;100%&#39;, width:&#39;100%&#39;}" :subkey="subkey" :longitude="longitude"
        :latitude="latitude" :scale="scale" show-location></map>
    </view>
</template>
<script>
    export default {
    data() {
            return {
                subkey: '',
                longitude: 113.324520,
                latitude: 23.109290,
                scale: 16,
            };
        },
    };
</script>

4. To realize the direct connection between two points

Use the AMap.Polyline class provided by AMAP to make a direct connection between two points. Define the points array in data to store the coordinate information of two points, then create the AMap.Polyline class in the mounted life cycle function and add it to the map. The code is as follows:

<template>
    <view class="container">
        <map :style="{height:&#39;100%&#39;, width:&#39;100%&#39;}" :subkey="subkey" :longitude="longitude"
        :latitude="latitude" :scale="scale" show-location></map>
    </view>
</template>
<script>
    export default {
    data() {
            return {
                subkey: '',
                longitude: 113.324520,
                latitude: 23.109290,
                scale: 16,
                points: [
                    {
                        longitude: 113.324520,
                        latitude: 23.109290,
                    },
                    {
                        longitude: 113.405927,
                        latitude: 23.132461,
                    },
                ],
            };
        },
        mounted() {
            this.drawPolyline();
        },
        methods: {
            drawPolyline() {
                const map = new AMap.Map('container', {
                    zoom: 16,
                    center: [this.longitude, this.latitude],
                });
                const polyline = new AMap.Polyline({
                    path: this.points,
                    strokeColor: '#0091ff',
                    strokeWeight: 6,
                });
                polyline.setMap(map);
            },
        },
    };
</script>

5. Application packaging and running

Use HBuilderX to package applications and conduct application testing on each platform.

4. Summary

This article introduces how to use uniapp to develop a direct connection application between two points, including environment configuration, implementation steps and packaging and running. By studying this article, you can understand the development process and basic use of uniapp. Of course, this is just a simple example, and there are many practical features to explore. Hope this article will be helpful to you.

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