项目中，新需求要求可以录音，同时转换成mp3格式传到服务器。这其中遇到了不少坑，接下来慢慢详谈。首先录音可以使用MediaPlayer这个类，直接展示代码 具体demo，下载地址最后会给出。然后android默认录音时.raw格式的，此时我们应该将raw格式的文件转化成mp3格式的。这里我们用到FLameUtils，值得一提的就是flame.jar,和libmp3lame.so文件。
1.最好是放在main文件夹下的jniLibs下
2.要在gradle.properties下加入如下代码：android.useDeprecatedNdk
允许ndk开发
3.当然不要忘记加入如下权限：
public class MainActivity extends Activity implements View.OnClickListener {private Button start,stop;//语音备注private Button record;private Dialog dialog;private MediaPlayer mediaPlayer;private Boolean isZhuanhuan = true;private Boolean isPermit=false;private Thread recordThread;private static int MAX_TIME = 90; // 最长录制时间，单位秒，0为无时间限制private static int MIX_TIME = 1; // 最短录制时间，单位秒，0为无时间限制，建议设为1private static int RECORD_NO = 0; // 不在录音private static int RECORD_ING = 1; // 正在录音private static int RECODE_ED = 2; // 完成录音private String file;private static int RECODE_STATE = 0; // 录音的状态private static float recodeTime = 0.0f; // 录音的时间private static double voiceValue = 0.0; // 麦克风获取的音量值private ImageView dialog_img;private boolean canClean = false;AudioRecorder2Mp3Util util = null;private static boolean playState = false; // 播放状态private TextView tvchonglu;private TextView player;//显示录制时间private String sec=null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);start = ((Button) findViewById(R.id.start));player = ((TextView) findViewById(R.id.player));stop = ((Button) findViewById(R.id.stop));initvoice();start.setOnClickListener(this);stop.setOnClickListener(this);}@Overridepublic void onClick(View view) {switch (view.getId()){case R.id.start:break;case R.id.stop:break;}}//****************语音部分******************private void initvoice() {// 播放player.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubif (!playState) {mediaPlayer = new MediaPlayer();String url = Environment.getExternalStorageDirectory()+ "/radio.mp3";try {if (!isZhuanhuan) {// 模拟器里播放传url，真机播放传getAmrPath()
// mediaPlayer.setDataSource(url);mediaPlayer.setDataSource(getAmrPath());mediaPlayer.prepare();mediaPlayer.start();// player.setText("正在播放中");playState = true;// 设置播放结束时监听mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {@Overridepublic void onCompletion(MediaPlayer mp) {if (playState) {// player.setText("播放声音");playState = false;}}});}} catch (IllegalArgumentException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalStateException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}} else {if (mediaPlayer.isPlaying()) {mediaPlayer.stop();playState = false;} else {playState = false;}// player.setText("播放录音");}}});record = (Button) this.findViewById(R.id.start);
// tvchonglu= (TextView) findViewById(R.id.act_ffzb_tvchonglu);// 录音record.setOnTouchListener(new View.OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {switch (event.getAction()) {case MotionEvent.ACTION_DOWN:if (RECODE_STATE != RECORD_ING) {scanOldFile();// mr = new AudioRecorder("voice");RECODE_STATE = RECORD_ING;
// showVoiceDialog();if (util == null) {util = new AudioRecorder2Mp3Util(null, Environment.getExternalStorageDirectory()+ "/radio.raw", Environment.getExternalStorageDirectory()+ "/radio.mp3");}if (canClean) {util.cleanFile(AudioRecorder2Mp3Util.MP3| AudioRecorder2Mp3Util.RAW);}util.startRecording(MainActivity.this);canClean = true;mythread();}break;case MotionEvent.ACTION_UP:if (RECODE_STATE == RECORD_ING) {RECODE_STATE = RECODE_ED;if (dialog!=null&&dialog.isShowing()) {dialog.dismiss();}isZhuanhuan = true;Toast.makeText(MainActivity.this, "正在保存录音", Toast.LENGTH_LONG).show();util.stopRecordingAndConvertFile();isZhuanhuan = false;Toast.makeText(MainActivity.this, "保存成功", Toast.LENGTH_LONG).show();util.cleanFile(AudioRecorder2Mp3Util.RAW);// 如果要关闭可以util.close();util = null;voiceValue = 0.0;if (recodeTime < MIX_TIME) {showWarnToast();// record.setText("按住开始录音");RECODE_STATE = RECORD_NO;} else {player.setText(((int) recodeTime) + "″");sec=recodeTime+"";player.setVisibility(View.VISIBLE);
// tvchonglu.setVisibility(View.VISIBLE);file = getAmrPath();// record.setText("录音完成!按住重新录音");// luyin_txt.setText("录音时间："+((int)recodeTime));// luyin_path.setText("文件路径："+getAmrPath());}}break;case MotionEvent.ACTION_CANCEL:
// Toast.makeText(FeiFangZhiBaoActivity.this,"cancel",Toast.LENGTH_LONG).show();if (RECODE_STATE == RECORD_ING) {RECODE_STATE = RECODE_ED;if (dialog.isShowing()) {dialog.dismiss();}
// dialog.dismiss();isZhuanhuan = true;Toast.makeText(MainActivity.this, "正在保存录音", Toast.LENGTH_LONG).show();util.stopRecordingAndConvertFile();isZhuanhuan = false;Toast.makeText(MainActivity.this, "保存成功", Toast.LENGTH_LONG).show();util.cleanFile(AudioRecorder2Mp3Util.RAW);// 如果要关闭可以util.close();util = null;// try {// recorder.stop();voiceValue = 0.0;// } catch (IOException e) {// e.printStackTrace();// }if (recodeTime < MIX_TIME) {showWarnToast();// record.setText("按住开始录音");RECODE_STATE = RECORD_NO;} else {player.setText(((int) recodeTime) + "″");sec=recodeTime+"";player.setVisibility(View.VISIBLE);
// tvchonglu.setVisibility(View.VISIBLE);file = getAmrPath();// record.setText("录音完成!按住重新录音");// luyin_txt.setText("录音时间："+((int)recodeTime));// luyin_path.setText("文件路径："+getAmrPath());}}break;}return false;}});}// 删除老文件void scanOldFile() {File file = new File(Environment.getExternalStorageDirectory(),"radio.mp3");if (file.exists()) {file.delete();}}// 录音时显示Dialog
// void showVoiceDialog() {
// dialog = new Dialog(MainActivity.this, R.style.DialogStyle);
// dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
// dialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
// WindowManager.LayoutParams.FLAG_FULLSCREEN);
// dialog.setContentView(R.layout.my_dialog);
// dialog_img = (ImageView) dialog.findViewById(R.id.dialog_img);
// dialog.show();
// }// 录音时间太短时Toast显示void showWarnToast() {Toast.makeText(MainActivity.this,"录音时间太短",Toast.LENGTH_SHORT).show();}
// Toast toast = new Toast(FeiFangZhiBaoActivity.this);
// LinearLayout linearLayout = new LinearLayout(FeiFangZhiBaoActivity.this);
// linearLayout.setOrientation(LinearLayout.VERTICAL);
// linearLayout.setPadding(20, 20, 20, 20);
//
// // 定义一个ImageView
// ImageView imageView = new ImageView(FeiFangZhiBaoActivity.this);
// imageView.setImageResource(R.drawable.voice_to_short); // 图标
//
// TextView mTv = new TextView(FeiFangZhiBaoActivity.this);
// mTv.setText("时间太短 录音失败");
// mTv.setTextSize(14);
// mTv.setTextColor(Color.WHITE);// 字体颜色
// // mTv.setPadding(0, 10, 0, 0);
//
// // 将ImageView和ToastView合并到Layout中
// linearLayout.addView(imageView);
// linearLayout.addView(mTv);
// linearLayout.setGravity(Gravity.CENTER);// 内容居中
// linearLayout.setBackgroundResource(R.drawable.record_bg);// 设置自定义toast的背景
//
// toast.setView(linearLayout);
// toast.setGravity(Gravity.CENTER, 0, 0);// 起点位置为中间 100为向下移100dp
// toast.show();
// }// 获取文件手机路径private String getAmrPath() {File file = new File(Environment.getExternalStorageDirectory(),"/radio.mp3");return file.getAbsolutePath();}// 录音计时线程void mythread() {recordThread = new Thread(ImgThread);recordThread.start();}// 录音Dialog图片随声音大小切换
// void setDialogImage() {
// if (voiceValue < 200.0) {
// dialog_img.setImageResource(R.drawable.record_animate_01);
// } else if (voiceValue > 200.0 && voiceValue < 400) {
// dialog_img.setImageResource(R.drawable.record_animate_02);
// } else if (voiceValue > 400.0 && voiceValue < 800) {
// dialog_img.setImageResource(R.drawable.record_animate_03);
// } else if (voiceValue > 800.0 && voiceValue < 1600) {
// dialog_img.setImageResource(R.drawable.record_animate_04);
// } else if (voiceValue > 1600.0 && voiceValue < 3200) {
// dialog_img.setImageResource(R.drawable.record_animate_05);
// } else if (voiceValue > 3200.0 && voiceValue < 5000) {
// dialog_img.setImageResource(R.drawable.record_animate_06);
// } else if (voiceValue > 5000.0 && voiceValue < 7000) {
// dialog_img.setImageResource(R.drawable.record_animate_07);
// } else if (voiceValue > 7000.0 && voiceValue < 10000.0) {
// dialog_img.setImageResource(R.drawable.record_animate_08);
// } else if (voiceValue > 10000.0 && voiceValue < 14000.0) {
// dialog_img.setImageResource(R.drawable.record_animate_09);
// } else if (voiceValue > 14000.0 && voiceValue < 17000.0) {
// dialog_img.setImageResource(R.drawable.record_animate_10);
// } else if (voiceValue > 17000.0 && voiceValue < 20000.0) {
// dialog_img.setImageResource(R.drawable.record_animate_11);
// } else if (voiceValue > 20000.0 && voiceValue < 24000.0) {
// dialog_img.setImageResource(R.drawable.record_animate_12);
// } else if (voiceValue > 24000.0 && voiceValue < 28000.0) {
// dialog_img.setImageResource(R.drawable.record_animate_13);
// } else if (voiceValue > 28000.0) {
// dialog_img.setImageResource(R.drawable.record_animate_14);
// }
// }// 录音线程private Runnable ImgThread = new Runnable() {@Overridepublic void run() {recodeTime = 0.0f;while (RECODE_STATE == RECORD_ING) {if (recodeTime >= MAX_TIME && MAX_TIME != 0) {imgHandle.sendEmptyMessage(0);} else {try {Thread.sleep(200);recodeTime += 0.2;if (RECODE_STATE == RECORD_ING) {voiceValue = util.getAmplitude();imgHandle.sendEmptyMessage(1);}} catch (InterruptedException e) {e.printStackTrace();}}}}Handler imgHandle = new Handler() {@Overridepublic void handleMessage(Message msg) {switch (msg.what) {case 0:// 录音超过15秒自动停止if (RECODE_STATE == RECORD_ING) {RECODE_STATE = RECODE_ED;if (dialog.isShowing()) {dialog.dismiss();}// mr.stop();util.stopRecordingAndConvertFile();Toast.makeText(MainActivity.this, "保存成功", Toast.LENGTH_LONG).show();util.cleanFile(AudioRecorder2Mp3Util.RAW);// 如果要关闭可以util.close();util = null;voiceValue = 0.0;if (recodeTime < 1.0) {showWarnToast();// record.setText("按住开始录音");RECODE_STATE = RECORD_NO;} else {// record.setText("录音完成!点击重新录音");player.setText(((int) recodeTime) + "″");player.setVisibility(View.VISIBLE);// luyin_txt.setText("录音时间："+((int)recodeTime));// luyin_path.setText("文件路径："+getAmrPath());file = getAmrPath();}}break;case 1:
// setDialogImage();break;default:break;}}};};@Overrideprotected void onDestroy() {// TODO Auto-generated method stubsuper.onDestroy();if (mediaPlayer != null) {mediaPlayer.release();mediaPlayer = null;}}//****************语音部分end******************}
然后，实际测试中，发现有的部分手机cpu是64位的，然而上面的so文件是没有64位的，推荐一个第三方，简单易用https://github.com/GavinCT/AndroidMP3Recorder
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