我是android和java的初学者。
但是,我想使用MediaRecorder录制语音并获取记录为byte []的数据,我编写了以下代码:
ParcelFileDescriptor[] fileDescriptors = ParcelFileDescriptor.createPipe();
ParcelFileDescriptor readFD = fileDescriptors[0];
ParcelFileDescriptor writeFD = fileDescriptors[1];
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.RAW_AMR);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(writeFD.getFileDescriptor());
recorder.setMaxDuration(6000);
recorder.prepare();
recorder.start();
recorder.setOnErrorListener(new MediaRecorder.OnErrorListener() {
@Override
public void onError(MediaRecorder mediaRecorder, int i, int i1) {
mediaRecorder.stop();
Log.d("voice", "onError");
mediaRecorder.release();
}
});
recorder.setOnInfoListener(new MediaRecorder.OnInfoListener() {
@Override
public void onInfo(MediaRecorder mediaRecorder, int i, int i1) {
mediaRecorder.stop();
Log.d("voice", "onInfo");
mediaRecorder.release();
}
});
InputStream inputStream = new ParcelFileDescriptor.AutoCloseInputStream(readFD);
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
int read = -1;
byte[] data = new byte[4000];
while ((read = inputStream.read(data, 0, data.length)) != -1) {
byteArrayOutputStream.write(data, 0, read);
}
byte[] byteResult = byteArrayOutputStream.toByteArray();
byteArrayOutputStream.flush();
byteArrayOutputStream.close();
return byteResult;
我对此有很大的疑问,我调试了代码,当我到达这一行时:
while ((read = inputStream.read(data, 0, data.length)) != -1) {
byteArrayOutputStream.write(data, 0, read);
}
过了一会儿,android studio向我显示消息并说:“应用程序正在运行”,我不得不停止它。...
任何人都可以帮助我,告诉我代码有什么错误吗?
答案 0 :(得分:1)
您可以使用此功能available()
while ((inputStream.read(data, 0, data.length)) != -1) {
read = inputStream.read(data, 0, data.length);
byteArrayOutputStream.write(data, 0, read);
}