Android 一个类实现录音与播放(MediaRecorder)
public class MainActivity extends AppCompatActivity {
private static final String LOG_TAG = "MainActivity";
//语音文件保存路径
private String FileName = null;
//界面控件
private Button startRecord;
private Button startPlay;
private Button stopRecord;
private Button stopPlay;
//语音操作对象
private MediaPlayer mPlayer = null;
private MediaRecorder mRecorder = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
requestPermission();//请求麦克风权限
//开始录音
startRecord = findViewById(R.id.startRecord);
//绑定监听器
startRecord.setOnClickListener(new startRecordListener());
//结束录音
stopRecord = findViewById(R.id.stopRecord);
stopRecord.setOnClickListener(new stopRecordListener());
//开始播放
startPlay = findViewById(R.id.startPlay);
//绑定监听器
startPlay.setOnClickListener(new startPlayListener());
//结束播放
stopPlay = findViewById(R.id.stopPlay);
stopPlay.setOnClickListener(new stopPlayListener());
//设置sdcard的路径
FileName = Environment.getExternalStorageDirectory().getAbsolutePath();
FileName += "/test.mp3";
}
private void requestPermission() {
PermissionGen.with(this)
.addRequestCode(100)
.permissions(Manifest.permission.RECORD_AUDIO,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.WAKE_LOCK)
.request();
}
//开始录音
class startRecordListener implements View.OnClickListener {
@Override
public void onClick(View v) {
mRecorder = new MediaRecorder();
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mRecorder.setOutputFile(FileName);
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
try {
mRecorder.prepare();
mRecorder.start();
} catch (IOException e) {
Log.e(LOG_TAG, "prepare() failed ---" + e.getMessage());
}
}
}
//停止录音
class stopRecordListener implements View.OnClickListener {
@Override
public void onClick(View v) {
mRecorder.stop();
mRecorder.release();
mRecorder = null;
}
}
//播放录音
class startPlayListener implements View.OnClickListener {
@Override
public void onClick(View v) {
mPlayer = new MediaPlayer();
try {
mPlayer.setDataSource(FileName);
mPlayer.prepare();
mPlayer.start();
} catch (IOException e) {
Log.e(LOG_TAG, "播放失败");
}
}
}
//停止播放录音
class stopPlayListener implements View.OnClickListener {
@Override
public void onClick(View v) {
mPlayer.release();
mPlayer = null;
}
}
}