package com.example.mediarecorde;import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
import android.app.Activity;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;public class MainActivity extends Activity implements OnClickListener,OnItemClickListener {// 语音文件private String fileName = null;// 音频文件保存的路径private String path = "";// 界面控件zprivate Button startRecord;// 开始录音private Button startPlay;// 开始播放private Button stopRecord;// 完成录音private Button stopPlay;// 停止播放private TextView time;// 计时显示private ListView mListView;// 音频文件列表private MAdapter mAdapter;private Button delete;// 删除按钮private Button pausePlay;// 暂停播放// 语音操作对象private MediaPlayer mPlayer = null;// 播放器private MediaRecorder mRecorder = null;// 录音器private boolean isPause = false;// 当前录音是否处于暂停状态private boolean isPausePlay = false;// 当前播放器是否处于暂停状态private ArrayList<String> mList = new ArrayList<String>();// 待合成的录音片段private ArrayList<String> list = new ArrayList<String>();// 已合成的录音片段private String deleteStr = null; // 列表中要删除的文件名private Timer timer;private String playFileName = null;// 选中的播放文件// 相关变量private int second = 0;private int minute = 0;private int hour = 0;private View whichSelecte = null;// 记录被选中的Itemprivate long limitTime = 0;// 录音文件最短事件1秒@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);// 初始化录音列表initList();// 初始化控件initView();}// 初始化界面private void initView() {delete = (Button) findViewById(R.id.delete);delete.setOnClickListener(this);// 对按钮的可点击事件的控制是保证不出现空指针的重点！！delete.setEnabled(false);pausePlay = (Button) findViewById(R.id.pausePlay);pausePlay.setOnClickListener(this);pausePlay.setEnabled(false);startRecord = (Button) findViewById(R.id.startRecord);startRecord.setOnClickListener(this);stopRecord = (Button) findViewById(R.id.stopRecord);stopRecord.setOnClickListener(this);stopRecord.setEnabled(false);startPlay = (Button) findViewById(R.id.startPlay);startPlay.setOnClickListener(this);startPlay.setEnabled(false);stopPlay = (Button) findViewById(R.id.stopPlay);stopPlay.setOnClickListener(this);stopPlay.setEnabled(false);time = (TextView) findViewById(R.id.time);mListView = (ListView) findViewById(R.id.listview);mAdapter = new MAdapter(this, list);mListView.setAdapter(mAdapter);mListView.setOnItemClickListener(this);}// 初始化录音列表private void initList() {path = Environment.getExternalStorageDirectory().getAbsolutePath()+ "/Anhry/" + getPackageName() + "/Record";// 判断SD卡是否存在if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {Toast.makeText(this, "SD卡状态异常，无法获取录音列表！", Toast.LENGTH_LONG).show();} else {// 根据后缀名进行判断、获取文件夹中的音频文件File file = new File(path);File files[] = file.listFiles();if (files != null) {for (int i = 0; i < files.length; i++) {if (files[i].getName().indexOf(".") >= 0) {// 只取.amr .mp3// .mp4 文件String fileStr = files[i].getName().substring(files[i].getName().indexOf("."));if (fileStr.toLowerCase().equals(".mp3")|| fileStr.toLowerCase().equals(".amr")|| fileStr.toLowerCase().equals(".mp4"))list.add(files[i].getName());}}}}}// 设置点击事件@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.startRecord:// 开始录音// 判断SD卡是否存在if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {Toast.makeText(this, "SD卡状态异常，请检查后重试！", Toast.LENGTH_LONG).show();break;}// 开始录音startRecord();// 录音计时recordTime();break;case R.id.stopRecord:// 完成录音if (isPause) {// 完成录音stopRecord();} else {// 暂停录音try {pauseRecord();} catch (InterruptedException e) {// 当一个线程处于等待，睡眠，或者占用，也就是说阻塞状态，而这时线程被中断就会抛出这类错误// 上百次测试还未发现这个异常，但是需要捕获e.printStackTrace();}}break;case R.id.startPlay:// 播放录音playRecord();break;case R.id.stopPlay:// 停止播放startPlay.setEnabled(true);stopPlay.setEnabled(false);startRecord.setEnabled(true);pausePlay.setEnabled(false);if (mPlayer != null) {// 释放资源// 对MediaPlayer多次使用而不释放资源就会出现MediaPlayer create faild 的异常mPlayer.release();mPlayer = null;}delete.setEnabled(true);break;case R.id.delete:// 删除录音文件deleteRecord();break;case R.id.pausePlay:// 暂停播放if (isPausePlay) {pausePlay.setText("暂停播放");pausePlay.setEnabled(true);isPausePlay = false;mPlayer.start();} else {if (mPlayer != null) {mPlayer.pause();}pausePlay.setText("继续播放");pausePlay.setEnabled(true);isPausePlay = true;}break;default:break;}}// 判断点击事件的时间间隔// 点击速度过快，比如在同一秒中点击三次，只会产生一个录音文件，因为命名一样。private boolean limitTime() {limitTime = System.currentTimeMillis() - limitTime;if (limitTime >= 1100) {limitTime = System.currentTimeMillis();return true;} else {return false;}}// 删除录音文件private void deleteRecord() {// 删除所选中的录音文件File file = new File(playFileName);if (file.exists()) {file.delete();list.remove(deleteStr);mAdapter.notifyDataSetChanged();time.setText("");} else {list.remove(deleteStr);mAdapter.notifyDataSetChanged();}startPlay.setEnabled(false);playFileName = null;delete.setEnabled(false);startRecord.setEnabled(true);time.setText("您本次的录音时长为：       00:00:00");}// 播放录音private void playRecord() {// 对按钮的可点击事件的控制是保证不出现空指针的重点！！startRecord.setEnabled(false);delete.setEnabled(false);stopPlay.setEnabled(true);startPlay.setEnabled(false);pausePlay.setEnabled(true);if (mPlayer != null) {mPlayer.release();mPlayer = null;}mPlayer = new MediaPlayer();// 播放完毕的监听mPlayer.setOnCompletionListener(new OnCompletionListener() {@Overridepublic void onCompletion(MediaPlayer mp) {// 播放完毕改变状态，释放资源mPlayer.release();mPlayer = null;startRecord.setEnabled(true);startPlay.setEnabled(true);stopPlay.setEnabled(false);delete.setEnabled(true);pausePlay.setEnabled(false);}});try {// 播放所选中的录音mPlayer.setDataSource(playFileName);mPlayer.prepare();mPlayer.start();} catch (Exception e) {// 若出现异常被捕获后，同样要释放掉资源// 否则程序会不稳定，不适合正式项目上使用if (mPlayer != null) {mPlayer.release();mPlayer = null;}Toast.makeText(this, "播放失败,可返回重试！", Toast.LENGTH_LONG).show();stopPlay.setEnabled(false);delete.setEnabled(true);pausePlay.setEnabled(false);}}// 完成录音private void stopRecord() {mRecorder.release();mRecorder = null;isPause = false;startRecord.setEnabled(true);startRecord.setText("开始录音");stopRecord.setEnabled(false);timer.cancel();// 最后合成的音频文件fileName = path + "/" + getTime() + ".amr";String fileName1 = getTime() + ".amr";FileOutputStream fileOutputStream = null;try {fileOutputStream = new FileOutputStream(fileName);} catch (FileNotFoundException e) {e.printStackTrace();}FileInputStream fileInputStream = null;try {for (int i = 0; i < mList.size(); i++) {File file = new File(mList.get(i));// 把因为暂停所录出的多段录音进行读取fileInputStream = new FileInputStream(file);byte[] mByte = new byte[fileInputStream.available()];int length = mByte.length;// 第一个录音文件的前六位是不需要删除的if (i == 0) {while (fileInputStream.read(mByte) != -1) {fileOutputStream.write(mByte, 0, length);}}// 之后的文件，去掉前六位else {while (fileInputStream.read(mByte) != -1) {fileOutputStream.write(mByte, 6, length - 6);}}}list.add(fileName1);mAdapter.notifyDataSetChanged();} catch (Exception e) {// 这里捕获流的IO异常，万一系统错误需要提示用户e.printStackTrace();Toast.makeText(this, "录音合成出错，请重试！", Toast.LENGTH_LONG).show();} finally {try {fileOutputStream.flush();fileInputStream.close();} catch (Exception e) {e.printStackTrace();}// 录音结束 、时间归零minute = 0;hour = 0;second = 0;}// 不管合成是否成功、删除录音片段for (int i = 0; i < mList.size(); i++) {File file = new File(mList.get(i));if (file.exists()) {file.delete();}}}// 暂停录音private void pauseRecord() throws InterruptedException {if (System.currentTimeMillis()-limitTime<1100) {//录音文件不得低于一秒钟Toast.makeText(this, "录音时间长度不得低于1秒钟！", Toast.LENGTH_SHORT).show();return ;}stopRecord.setEnabled(true);mRecorder.stop();mRecorder.release();timer.cancel();isPause = true;// 将录音片段加入列表mList.add(fileName);startRecord.setEnabled(true);startRecord.setText("继续录音");stopRecord.setText("完成录音");}// 开始录音private void startRecord() {stopRecord.setText("暂停录音");startRecord.setText("录音中...");startRecord.setEnabled(false);startPlay.setEnabled(false);stopRecord.setEnabled(true);delete.setEnabled(false);if (!isPause) {// 新录音清空列表mList.clear();}File file = new File(path);if (!file.exists()) {file.mkdirs();}fileName = path + "/" + getTime() + ".amr";isPause = false;mRecorder = new MediaRecorder();mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);// 选择amr格式mRecorder.setOutputFormat(MediaRecorder.OutputFormat.RAW_AMR);mRecorder.setOutputFile(fileName);mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);try {mRecorder.prepare();} catch (Exception e) {// 若录音器启动失败就需要重启应用，屏蔽掉按钮的点击事件。 否则会出现各种异常。Toast.makeText(this, "录音器启动失败，请返回重试！", Toast.LENGTH_LONG).show();startPlay.setEnabled(false);stopPlay.setEnabled(false);delete.setEnabled(false);startRecord.setEnabled(false);stopRecord.setEnabled(false);mRecorder.release();mRecorder = null;this.finish();}if (mRecorder != null) {mRecorder.start();limitTime = System.currentTimeMillis();}}// 计时器异步更新界面Handler handler = new Handler() {@Overridepublic void handleMessage(Message msg) {time.setText("您本次的录音时长为：       "+ String.format("%1$02d:%2$02d:%3$02d", hour, minute,second));super.handleMessage(msg);}};// 录音计时private void recordTime() {TimerTask timerTask = new TimerTask() {@Overridepublic void run() {second++;if (second >= 60) {second = 0;minute++;if (minute >= 60) {minute = 0;hour++;}}handler.sendEmptyMessage(1);}};timer = new Timer();timer.schedule(timerTask, 1000, 1000);}// 获得当前时间private String getTime() {SimpleDateFormat formatter = new SimpleDateFormat("yyyy年MM月dd日HH：mm：ss");Date curDate = new Date(System.currentTimeMillis());// 获取当前时间String time = formatter.format(curDate);return time;}// 录音列表被点击事件@Overridepublic void onItemClick(AdapterView<?> parent, View view, int position,long id) {// 屏蔽点击事件的一种方式if (mRecorder == null) {startPlay.setEnabled(true);if (mPlayer == null || !mPlayer.isPlaying()) {delete.setEnabled(true);} else {delete.setEnabled(false);}}startPlay.setText("播放录音");// 列表文件的选中效果if (whichSelecte != null) {whichSelecte.setBackgroundColor(getResources().getColor(R.color.no));}view.setBackgroundColor(getResources().getColor(R.color.yes));// 要播放文件的路径playFileName = path + "/" + list.get(position);// 要删除文件的名称deleteStr = list.get(position);whichSelecte = view;time.setText(list.get(position));}// Activity被销毁的时候 释放资源@Overrideprotected void onDestroy() {// 删除片段if (mList != null && mList.size() > 0) {for (int i = 0; i < mList.size(); i++) {File file = new File(mList.get(i));if (file.exists()) {file.delete();}}}if (null != mRecorder) {mRecorder.stop();mRecorder.release();mRecorder = null;}if (null != mPlayer) {mPlayer.stop();mPlayer.release();mPlayer = null;}if (timer != null) {timer.cancel();}super.onDestroy();}// 来电暂停@Overrideprotected void onPause() {if (mRecorder != null) {// 暂停录音try {pauseRecord();} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}if (mPlayer != null) {// 暂停播放mPlayer.pause();isPausePlay = true;pausePlay.setText("继续播放");pausePlay.setEnabled(true);}super.onPause();}}