How to implement audio recording function in uniapp

How to implement the audio recording function in uni-app

Overview
In mobile application development, the audio recording function is widely used in scenarios such as voice messages, speech recognition, and speech-to-text. As a cross-platform development framework, uni-app's powerful functions and rich API make it very simple to implement audio recording functions. This article will introduce how to implement the audio recording function in uni-app and give detailed code examples.

Step 1: Create uni-app project
First, we need to create a uni-app project in the development environment. You can use IDE tools such as HbuilderX or command line tools to create a basic uni-app project by executing the following command:

$ vue create -p dcloudio/uni-preset-vue my-project

Step 2: Install the uni-app audio function plug-in
Provided in the uni-app community With a rich set of plug-ins, we can implement the audio recording function through plug-ins. It is recommended to use the uni-audio-recorder plug-in, which provides a simple and easy-to-use API interface to implement audio recording, pause, continue recording and other functions.
Execute the following command in the root directory of the project to install the uni-audio-recorder plug-in:

$ npm install uni-audio-recorder

Add the uni-audio-recorder plug-in to the configuration file. If you need to use local resources and other functions, you also need to Add the following code configuration to the manifest.json file:

{
  "usingComponents": {
    "uni-audio-recorder": "uni-audio-recorder/uni-audio-recorder"
  },
  "permission": {
    "audioRecord": {
      "desc": "您的录音功能将被用于实现语音邮件,确定开启录音功能？"
    }
  }
}

Step 3: Create the recording page
In uni-app, we can use Vue syntax to create the page. First, create a Recording.vue file in the pages directory and add the following code in it:

<template>
    <view class="container">
        <button @click="startRecord">开始录制</button>
        <button @click="pauseRecord">暂停录制</button>
        <button @click="resumeRecord">继续录制</button>
        <button @click="stopRecord">停止录制</button>
    </view>
</template>

<script>
    import uniAudioRecorder from 'uni-audio-recorder'
    export default {
        methods: {
            startRecord() {
                uniAudioRecorder.start({
                    success(res) {
                        console.log('录音开始成功', res)
                    },
                    fail(err) {
                        console.error('录音开始失败', err)
                    }
                })
            },
            pauseRecord() {
                uniAudioRecorder.pause()
            },
            resumeRecord() {
                uniAudioRecorder.resume()
            },
            stopRecord() {
                uniAudioRecorder.stop({
                    success(res) {
                        console.log('录音停止成功', res)
                    },
                    fail(err) {
                        console.error('录音停止失败', err)
                    }
                })
            }
        }
    }
</script>

<style>
    .container {
        display: flex;
        justify-content: space-around;
    }
</style>

Step 4: Run and test the recording function
Run the uni-app project in the real machine debugging environment. In the Recording page, click the "Start Recording" button to start recording. Click the "Pause Recording" button to pause recording, click the "Continue Recording" button to continue the previous recording, click the "Stop Recording" button to stop recording and obtain the recording file. At the same time, through the callback function provided by uniAudioRecorder, we can handle success and failure situations that occur during the recording process.

Summary
Through the above steps, we successfully implemented the audio recording function in uni-app. Using the API interface of the uni-audio-recorder plug-in and Vue syntax support, developers can easily implement functions such as audio recording, pausing, continuing recording, and stopping recording. I hope this article can help readers and make the development of audio recording functions simpler and more efficient.

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