我正在尝试在服务中使用MediaRecorder来录制声音。但它在开始时会产生1秒的延迟(静音)。如何摆脱这个?我尝试使用RehearsalAudioRecorder仍然没有运气。如果有人在解决此问题之前请提出建议。
开始
Intent serviceIntent = new Intent();
serviceIntent.setAction("com.soundrecoder.RecorderService");
serviceIntent.putExtra("audioFile", path);
serviceIntent.putExtra("state", true);
startService(serviceIntent);
停止
Intent serviceIntent = new Intent();
serviceIntent.setAction("com.soundrecoder.RecorderService");
serviceIntent.putExtra("state", false);
startService(serviceIntent);
RecorderService.java文件
public class RecorderService extends Service
{
private static final String TAG = null;
private static MediaRecorder mRecorder;
public void onCreate() {};
public void onStart(Intent intent, int startId)
{
boolean isStart = intent.getBooleanExtra("state", false);
if (isStart) {
mRecorder = new MediaRecorder();
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mRecorder.setOutputFile(intent.getStringExtra("audioFile"));
try {
mRecorder.prepare();
} catch (IllegalStateException e) {
Log.e(TAG,e.getMessage());
} catch (IOException e) {
Log.e(TAG,e.getMessage());
}
try {
mRecorder.start();
}
catch (IllegalStateException e) {
Log.e(TAG, e.getMessage());
}
}
else if (!isStart) {
mRecorder.stop();
mRecorder.reset();
}
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
答案 0 :(得分:0)
我找到了RehearsalAudioRecorder的解决方案
public void onStart(Intent intent, int startId) {
boolean isStart = intent.getBooleanExtra("state", false);
if (isStart) {
acquireWakeLock();
int i = 0;
do {
if (mRecorder != null)
mRecorder.release();
mRecorder = new RehearsalAudioRecorder(false, 0, 0, 0, 0);
} while ((++i < 44100)
& !(mRecorder.getState() == RehearsalAudioRecorder.State.INITIALIZING));
mRecorder.setOutputFile(intent.getStringExtra("audioFile"));
mRecorder.prepare();
mRecorder.start();
} else if (!isStart) {
if(mRecorder != null) {
mRecorder.stop();
mRecorder.release();
mRecorder = null;
}
releaseWakeLock();
}
}