Android MediaRecorder录制播放音频

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1、请求录制音频权限

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

RECORD_AUDIO 权限从6.0后需要进行用户授权，通过ActivityCompat.requestPermissions();

2、创建运行MediaRecorder

2.1 设置音频源setAudioSource(int audio_source) ，多少情况使用MediaRecorder.AudioSource.MIC

2.2 设置输出音频文件格式 setOutputFormat(int output_format)

*(Android 8.0 开始支持MPEG2_TS 格式)

2.3 设置输出文件名 setOutputFile(String filepath)

2.4 设置音频编码器 setAudioEncoder(int audio_encoder)

2.5 通过完成初始化 prepare()

2.6 start()

3 停止释放资源

stop() release()

4、创建MediaPlayer

MediaPlayer mediaPlayer=new MediaPlayer();
mediaPlayer.setDataSource(recordFile.getPath());
mediaPlayer.prepare();
mediaPlayer.start();
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
mp.reset();
}
});

package com.rexkell.mediaapplication;import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;import java.io.File;
import java.io.IOException;/**
* author: rexkell
* explain:MediaRecord 录制音频
*/
public class MediaRecordActivity extends AppCompatActivity {
private boolean isRecording=false;
MediaRecorder mediaRecorder;
MediaPlayer mediaPlayer;
File recordFile;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.ac_mediarecord);
init();
}
public void init(){
mediaRecorder=new MediaRecorder();
//设置音频的来源
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
//设置音频的输出格式
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_WB);
//设置音频文件的编码
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_WB);
mediaPlayer=new MediaPlayer();
recordFile=new File(getExternalFilesDir(null).getPath()+"/test.amr"); }
public void record(View v){
isRecording=!isRecording;
String text=isRecording?"暂停":"录制";
((Button)v).setText(text);
if (isRecording){
startRecord();
}else {
stopRecord();
}
}
public void play(View v){ if (mediaPlayer.isPlaying()){
return;
}
//设置数据源
try {
mediaPlayer.setDataSource(recordFile.getPath());
mediaPlayer.prepare();
mediaPlayer.start();
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
mp.reset();
}
});
} catch (IOException e) {
e.printStackTrace();
} }
public void startRecord(){
if (recordFile.exists()){
recordFile.delete();
}
try {
recordFile.createNewFile();
} catch (IOException e) {
e.printStackTrace();
} mediaRecorder.setOutputFile(recordFile.getPath());
try {
mediaRecorder.prepare();
mediaRecorder.start();
} catch (IOException e) {
e.printStackTrace();
}
}
public void stopRecord(){
if (mediaRecorder!=null&&isRecording){
mediaRecorder.stop();
mediaRecorder.release();
mediaRecorder=null;
}
}
public void stopPlay(){
if(mediaPlayer!=null){
mediaPlayer.stop();
mediaPlayer.release();
mediaPlayer=null;
}
}
}