场景

在Android中怎样实现类似发送语音消息功能前的按键录音并将其显示在RecyclerView上并且能点击录音文件进行播放。

一、使用AudioRrecord录音

赋予录音权限
    打开AndroidManifest.xml

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.RECORD_AUDIO"/>

封装录音相关工具类

public class PcmToWavUtil {
    private int mBufferSize; //缓存的音频大小
    private int mSampleRate = 44100;// 此处的值必须与录音时的采样率一致
    private int mChannel = AudioFormat.CHANNEL_IN_STEREO; //立体声
    private int mEncoding = AudioFormat.ENCODING_PCM_16BIT;
 
    private static class SingleHolder {
        static PcmToWavUtil mInstance = new PcmToWavUtil();
    }
 
    public static PcmToWavUtil getInstance() {
        return SingleHolder.mInstance;
    }
 
 
    public PcmToWavUtil() {
        this.mBufferSize = AudioRecord.getMinBufferSize(mSampleRate, mChannel, mEncoding);
    }
 
    /**
     * @param sampleRate sample rate、采样率
     * @param channel    channel、声道
     * @param encoding   Audio data format、音频格式
     */
    public PcmToWavUtil(int sampleRate, int channel, int encoding) {
        this.mSampleRate = sampleRate;
        this.mChannel = channel;
        this.mEncoding = encoding;
        this.mBufferSize = AudioRecord.getMinBufferSize(mSampleRate, mChannel, mEncoding);
    }
 
    /**
     * pcm文件转wav文件
     *
     * @param inFilename  源文件路径
     * @param outFilename 目标文件路径
     * @param deleteOrg   是否删除源文件
     */
    public void pcmToWav(String inFilename, String outFilename, boolean deleteOrg) {
        FileInputStream in;
        FileOutputStream out;
        long totalAudioLen;
        long totalDataLen;
        long longSampleRate = mSampleRate;
        int channels = 2;
        long byteRate = 16 * mSampleRate * channels / 8;
        byte[] data = new byte[mBufferSize];
        try {
            in = new FileInputStream(inFilename);
            out = new FileOutputStream(outFilename);
            totalAudioLen = in.getChannel().size();
            totalDataLen = totalAudioLen + 36;
 
            writeWaveFileHeader(out, totalAudioLen, totalDataLen,
                    longSampleRate, channels, by