三星手机下录音崩溃的有关问题

public class AndroidAudioRecordManager{    public int frequency =8000;    public int channelConfiguration = AudioFormat.CHANNEL_CONFIGURATION_MONO;    public int audioEncoding = AudioFormat.ENCODING_PCM_16BIT;    int recBufSize, playBufSize;    AudioRecord audioRecord;    boolean isRecording = false;    private long filterCtxPtr = 0;    Thread recordThread=null;        private native void putAudioData(long filterCtxPtr, byte[] buffer,            int dataLen);    public void startParametersFromFilter(long filterCtxPtr, int rate,            int channel, int bits)    {        this.filterCtxPtr = filterCtxPtr;        frequency = rate;        recBufSize = AudioRecord.getMinBufferSize(frequency,                channelConfiguration, audioEncoding);        audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC,                frequency, channelConfiguration, audioEncoding,                recBufSize);        isRecording = true;        recordThread=new AudioRecordThread();        recordThread.start();    }    public void stopFromFilter()    {        isRecording = false;        try        {            recordThread.join();        } catch (InterruptedException e)        {        }            }    class AudioRecordThread extends Thread    {        public void run()        {            android.os.Process.setThreadPriority(-19);            try            {                byte[] buffer = new byte[recBufSize];                int rstat=audioRecord.getRecordingState();                int dstat=audioRecord.getState();                if(dstat!=AudioRecord.STATE_INITIALIZED)                {                    return;                }                Thread.sleep(1000);                audioRecord.startRecording();                while(isRecording)                {                    int bufferReadResult = audioRecord.read(buffer, 0, 320);                    putAudioData(filterCtxPtr, buffer, bufferReadResult);                }                audioRecord.stop();            } catch (Throwable t)            {            }            finally            {                audioRecord.release();                audioRecord=null;            }        }    }};