How to implement audio recording and audio playback in uniapp

How to implement audio recording and audio playback in uniapp?

In modern mobile application development, the implementation of audio functions is a very common requirement. In uniapp, we can implement audio recording and playback functions by using related plug-ins and APIs provided by uni-app.

First of all, we need to use the plug-in management function of uni-app to introduce the uni-voice-record plug-in, which can help us realize the audio recording function. Add the following code to the "plugins" node in the manifest.json file of the project:

"plugins": {
  "uni-voice-record": {
    "version": "1.0.0",
    "provider": "wx4d4d8c2p3a7b56d"
  }
}

After introducing the plug-in, we can use the API provided by the uni-voice-record plug-in on the page to implement the audio recording function. The following is a sample code:

uni.startRecord({
  success(res) {
    console.log('录音成功', res);
  },
  fail(err) {
    console.log('录音失败', err);
  }
});

In the above code, we use the uni.startRecord method to start recording, and obtain the result of successful recording through the success callback function, and obtain the result of failed recording through the fail callback function.

Next, we need to implement the audio playback function. uni-app provides the uni.createInnerAudioContext method to create an internal audio context object. We can use this object to implement the audio playback function. The following is a sample code:

var audioContext = uni.createInnerAudioContext();
audioContext.src = 'audio.mp3'; // 设置音频的路径

audioContext.play(); // 播放音频

audioContext.onPlay(() => {
  console.log('音频开始播放');
});

audioContext.onEnded(() => {
  console.log('音频播放结束');
});

In the above code, we create an internal audio context object and specify the path of the audio file that needs to be played by setting the src attribute. After calling the play method, the audio will start playing. At the same time, we can also monitor the start and end events of audio playback through the onPlay callback function and onEnded callback function.

In addition to using the uni-voice-record plug-in and uni.createInnerAudioContext method, uni-app also provides some other APIs and plug-ins, such as uni.chooseImage and uni-media-recorder, which can help us further expand and optimize audio recording and playback functions.

To summarize, by using the relevant plug-ins and APIs provided by uni-app, we can implement audio recording and audio playback functions in uniapp. The above code examples are for reference only, and the specific implementation needs to be adjusted and optimized according to actual needs. Hope this article can be helpful to you.

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