Android語音錄制的代碼
2018-07-20 來源：open-open
使用MediaRecorder的步驟：
1、創(chuàng)建MediaRecorder對象
2、調(diào)用MediRecorder對象的setAudioSource()方法設(shè)置聲音的來源，一般傳入MediaRecorder.MIC
3、調(diào)用MediaRecorder對象的setOutputFormat()設(shè)置所錄制的音頻文件的格式
4、調(diào)用MediaRecorder對象的setAudioRncoder()、setAudioEncodingBitRate(int bitRate)、setAudioSamlingRate(int SamplingRate)設(shè)置所錄音的編碼格式、編碼位率、采樣率等，
5、調(diào)用MediaRecorder對象的setOutputFile(String path)方法設(shè)置錄制的音頻文件的保存位置
6、調(diào)用MediaRecoder對象的Prepare()方法準(zhǔn)備錄制
7、調(diào)用MediaRecoder對象的start()方法開始錄制
8、調(diào)用MediaRecoder對象的stop()方法停止錄制，并調(diào)用release()方法釋放資源
-。啟用權(quán)限
<uses-permission android:name="android.permission.MOUNT_FORMAT_FILESYSTEMS"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
布局就不用說了 ，附上代碼吧
主要代碼：
public class MainActivity extends Activity implements OnClickListener {
private Button start;
private Button stop;
private ListView listView;
// 錄音文件播放
private MediaPlayer myPlayer;
// 錄音
private MediaRecorder myRecorder;
// 音頻文件保存地址
private String path;
private String paths = path;
private File saveFilePath;
// 所錄音的文件
String[] listFile = null;
ShowRecorderAdpter showRecord;
AlertDialog aler = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
start = (Button) findViewById(R.id.start);
stop = (Button) findViewById(R.id.stop);
listView = (ListView) findViewById(R.id.list);
myPlayer = new MediaPlayer();
myRecorder = new MediaRecorder();
// 從麥克風(fēng)源進(jìn)行錄音
myRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
// 設(shè)置輸出格式
myRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
// 設(shè)置編碼格式
myRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
showRecord = new ShowRecorderAdpter();
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
try {
path = Environment.getExternalStorageDirectory()
.getCanonicalPath().toString()
+ "/RECORDERS";
File files = new File(path);
if (!files.exists()) {
files.mkdir();
}
listFile = files.list();
} catch (IOException e) {
e.printStackTrace();
}
}
start.setOnClickListener(this);
stop.setOnClickListener(this);
if (listFile != null) {
listView.setAdapter(showRecord);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
class ShowRecorderAdpter extends BaseAdapter {
@Override
public int getCount() {
return listFile.length;
}
@Override
public Object getItem(int arg0) {
return arg0;
}
@Override
public long getItemId(int arg0) {
return arg0;
}
@Override
public View getView(final int postion, View arg1, ViewGroup arg2) {
View views = LayoutInflater.from(MainActivity.this).inflate(
R.layout.list_show_filerecorder, null);
TextView filename = (TextView) views
.findViewById(R.id.show_file_name);
Button plays = (Button) views.findViewById(R.id.bt_list_play);
Button stop = (Button) views.findViewById(R.id.bt_list_stop);
filename.setText(listFile[postion]);
// 播放錄音
plays.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
try {
myPlayer.reset();
myPlayer.setDataSource(path + "/" + listFile[postion]);
if (!myPlayer.isPlaying()) {
myPlayer.prepare();
myPlayer.start();
} else {
myPlayer.pause();
}
} catch (IOException e) {
e.printStackTrace();
}
}
});
// 停止播放
stop.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
if (myPlayer.isPlaying()) {
myPlayer.stop();
}
}
});
return views;
}
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.start:
final EditText filename = new EditText(this);
Builder alerBuidler = new Builder(this);
alerBuidler
.setTitle("請輸入要保存的文件名")
.setView(filename)
.setPositiveButton("確定",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
String text = filename.getText().toString();
try {
paths = path
+ "/"
+ text
+ new SimpleDateFormat(
"yyyyMMddHHmmss").format(System
.currentTimeMillis())
+ ".amr";
saveFilePath = new File(paths);
Log.e("activity", saveFilePath+"");
myRecorder.setOutputFile(saveFilePath
.getAbsolutePath());
saveFilePath.createNewFile();
myRecorder.prepare();
// 開始錄音
myRecorder.start();
start.setText("正在錄音中。。");
start.setEnabled(false);
aler.dismiss();
// 重新讀取 文件
File files = new File(path);
listFile = files.list();
// 刷新ListView
showRecord.notifyDataSetChanged();
} catch (Exception e) {
e.printStackTrace();
}
}
});
aler = alerBuidler.create();
aler.setCanceledOnTouchOutside(false);
aler.show();
break;
case R.id.stop:
if (saveFilePath.exists() && saveFilePath != null) {
myRecorder.stop();
myRecorder.release();
// 判斷是否保存 如果不保存則刪除
new AlertDialog.Builder(this)
.setTitle("是否保存該錄音")
.setPositiveButton("確定", null)
.setNegativeButton("取消",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
saveFilePath.delete();
// 重新讀取 文件
File files = new File(path);
listFile = files.list();
// 刷新ListView
showRecord.notifyDataSetChanged();
}
}).show();
}
start.setText("錄音");
start.setEnabled(true);
default:
break;
}
}
@Override
protected void onDestroy() {
// 釋放資源
if (myPlayer.isPlaying()) {
myPlayer.stop();
myPlayer.release();
}
myPlayer.release();
myRecorder.release();
super.onDestroy();
}
}
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