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