效果

代码

package com.javen.devicemange.CrazyOne.media;import android.Manifest;import android.media.MediaRecorder;import android.os.Bundle;import android.os.Environment;import android.support.annotation.Nullable;import android.support.v4.app.ActivityCompat;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Button;import android.widget.Toast;import com.javen.devicemange.R;import java.io.File;import java.io.IOException;/** * Created by Administrator on 2017/2/27 0027. * 使用MediaRecorder录制音频（声音） */public class RecordSound extends AppCompatActivity implements View.OnClickListener {    PRivate Button record;    private Button stop;    private File file;    private MediaRecorder mediaRecorder;    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.recordsound);        initView();        requestPermission();    }    /**     * 申请权限     */    private void requestPermission() {        String[] needPermission = {                Manifest.permission.RECORD_AUDIO,                Manifest.permission.READ_EXTERNAL_STORAGE,                Manifest.permission.WRITE_EXTERNAL_STORAGE,        };        ActivityCompat.requestPermissions(this, needPermission, 1);    }    private void initView() {        record = (Button) findViewById(R.id.record);        stop = (Button) findViewById(R.id.stop);        record.setOnClickListener(this);        stop.setOnClickListener(this);    }    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.record:                if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {                    Toast.makeText(this, "ad卡不存在", Toast.LENGTH_SHORT).show();                    return;                }                //创建文件                file = new File(Environment.getExternalStorageDirectory().toString() + "/sound.amr");                mediaRecorder = new MediaRecorder();                //设置录音的声音来源，MIC:麦克风的音频源                mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);                //设置录音的声音的格式,THREE_GPP:推荐录音的时候用3GPP（必须在设置声音编码格式之前设置）                mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);                //设置录音的编码格式                mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);                //设置录制的音频文件的保存位置                mediaRecorder.setOutputFile(file.getAbsolutePath());                try {                    mediaRecorder.prepare();                    //开始录音                    mediaRecorder.start();                } catch (IOException e) {                    e.printStackTrace();                }                break;            case R.id.stop:                if (null != file && file.exists()) {                    //停止录音                    mediaRecorder.stop();                    mediaRecorder.release();                    mediaRecorder = null;                }                break;        }    }}
布局xml
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"              android:layout_width="match_parent"              android:layout_height="match_parent"              android:orientation="vertical">    <Button        android:id="@+id/record"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="record"/>    <Button        android:id="@+id/stop"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="stop"/></LinearLayout>
AndroidManifest.xml
<!--授予程序录制声音,读写sd卡的权限--><uses-permission android:name="android.permission.RECORD_AUDIO"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>。。。