voice/FunctionRealize/Record/RecordActivity.java

package com.record;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.media.MediaRecorder;
import android.os.Environment;
import android.view.Window;
import android.widget.Button;
import android.widget.Toast;
import java.io.File;
import java.io.IOException;

@SuppressLint("Registered")
public class RecordActivity extends Activity implements View.OnClickListener {

    Button startRecording, stopRecording, pauseRecording;//开始录音、停止录音、释放资源
    MediaRecorder recorder;
    File audioFile; //录音保存的文件
    boolean isRecoding = false;// true 表示正在录音

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);
        init();
        initListener();
    }

    //初始化
    public void init() {
        stopRecording = (Button) this.findViewById(R.id.btn_stop);
        startRecording = (Button) this.findViewById(R.id.btn_play);
        pauseRecording = (Button) this.findViewById(R.id.btn_pause);
        if (!path.exists()) {
            path.mkdirs();
        }
    }
    //初始化麦克风
    private void InitMedia(){
        recorder = new MediaRecorder();
        recorder.setAudioSource(MediaRecorder.AudioSource.MIC);//设置播放源 麦克风
        recorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_NB); //设置输入格式 3gp
        recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); //设置编码AMR
    }
    //设置监听器
    public void initListener() {
        startRecording.setOnClickListener(this);
        stopRecording.setOnClickListener(this);
        pauseRecording.setOnClickListener(this);
    }

    //此处还应该对手机进行下判断，判断下手机里面有没有内存卡
    //保存在SD卡下MediaRecorderTest文件夹中
    File path = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/MediaRecorderTest");

    //录音
    public void recod() {
        InitMedia();
        int i = (int) (Math.random() * 10000);
        String a = Integer.toString(i);
        String b = "Voice";
        String FileName = b + a;
        try {
            audioFile = new File(path, FileName + ".aac");
            //audioFile=new File(path,"ycc.aac");
            if (audioFile.exists()) {
                audioFile.delete();
            }
            audioFile.createNewFile();//创建文件

        } catch (Exception e) {
            throw new RuntimeException("Couldn't create recording audio file", e);
        }

        recorder.setOutputFile(audioFile.getAbsolutePath()); //设置输出文件

        try {
            recorder.prepare();
        } catch (IllegalStateException e) {
            throw new RuntimeException("IllegalStateException on MediaRecorder.prepare", e);
        } catch (IOException e) {
            throw new RuntimeException("IOException on MediaRecorder.prepare", e);
        }
        isRecoding = true;
        recorder.start();
    }


    public void onClick(View v) {
        //开始录音
        while (true){
            if (v == startRecording) {
                Toast.makeText(RecordActivity.this, "开始录音", Toast.LENGTH_SHORT).show();
                recod();
                break;
            }

            if (v == pauseRecording) {

            }
            //停止录音
            if (v == stopRecording) {
                if (isRecoding) {
                    Toast.makeText(RecordActivity.this, "录音结束,文件已存至/MediaRecorderTest", Toast.LENGTH_SHORT).show();
                    recorder.stop();//调用stop之后recorder会被清空，再次录音要再次初始化recorder
                    break;
                }
            }
        }
    }
}