you should also show logcat output. On Sep 20, 5:35 am, melo <[email protected]> wrote: > Hi all > I'm an android starter > I used MediaRecorder and MediaPlayer to record voice via mic before > This time,I try AudioRecord and AudioTrack to record voice > But when I try to start, it's forced to be shut down > I've no idea where is wrong? > here are my code ~ > Could any one tell me why? > TKS in advance :) > > public class audioRecorderTest2 extends Activity > { > > boolean isRecording = true; > > private static final String Tag = "audioRecorder"; > private static final boolean log = true; > > Button recordButton; > Button stopButton; > > OnClickListener record_listener = null; > OnClickListener stop_listener = null; > > int frequency = 8000; > int channelConfiguration = AudioFormat.CHANNEL_CONFIGURATION_MONO; > int audioEncoding = AudioFormat.ENCODING_PCM_16BIT; > > protected static final int MENU_ABOUT = Menu.FIRST; > protected static final int MENU_Quit = Menu.FIRST + 1; > > /** Called when the activity is first created. */ > @Override > public void onCreate(Bundle savedInstanceState) > { > super.onCreate(savedInstanceState); > setContentView(R.layout.main); > initResourceRefs(); > > setTitle("Audio recorder test..."); > > record_listener = new OnClickListener() > { > @Override > public void onClick(View arg0) > { > AudioManager am = > (AudioManager)getSystemService(Context.AUDIO_SERVICE); > > //int actualBufferSize = 4096*8; > > int bufferSize = > AudioTrack.getMinBufferSize(frequency,channelConfiguration,audioEncoding); > > int actualBufferSize = bufferSize;//4096*8 > > AudioTrack audioTrack = new > AudioTrack(AudioManager.STREAM_MUSIC, > > frequency, > > channelConfiguration, > audioEncoding, > > actualBufferSize, > > AudioTrack.MODE_STREAM); > > byte[] buffer = new byte[actualBufferSize]; > > AudioRecord audioRecord = new > AudioRecord(MediaRecorder.AudioSource.MIC, > > frequency, > > channelConfiguration, > > audioEncoding, > > actualBufferSize); > > am.setRouting(AudioManager.MODE_NORMAL, > AudioManager.ROUTE_EARPIECE, > AudioManager.ROUTE_ALL); > > am.setSpeakerphoneOn(true); > am.setMicrophoneMute(false); > > Log.d(Tag,"Is speakerphone on? : " + > am.isSpeakerphoneOn()); > > audioTrack.setPlaybackRate(frequency); > audioRecord.startRecording(); > audioTrack.play(); > > int frameSize = bufferSize;//320 > > while(isRecording == true) > { > try{ > int bufferReadResult = > audioRecord.read(buffer, > 0,frameSize); > > if(bufferReadResult == > AudioRecord.ERROR_INVALID_OPERATION) > > if(log)Log.d(Tag,"record.read:ERROR_INVALID_OPERATION > returned"); > > else if(bufferReadResult == > AudioRecord.ERROR_BAD_VALUE) > if(log)Log.d(Tag,"record.read:ERROR_BAD_VALUE > returned"); > > else if(bufferReadResult != frameSize) > > if(log)Log.d(Tag,"record.read:Requested " + frameSize + > " bytes but read" + > bufferReadResult + "bytes"); > > else audioTrack.write(buffer,0,buffer.length); > }catch(Exception e) > {if(log)Log.e(Tag,"ERROR: " + e.toString());} > } > > audioRecord.stop(); > audioTrack.stop(); > audioRecord.release(); > audioTrack.release(); > } > };//record_listener > > stop_listener = new OnClickListener() > { > @Override > public void onClick(View arg0) > { > isRecording = false; > } > };//stop_listener > > setListeners(); > }//onCreate > > private void initResourceRefs()//初始化 > { > recordButton = (Button)findViewById(R.id.recordButton); > stopButton = (Button)findViewById(R.id.stopButton); > }//initResourceRefs() > > private void setListeners() > { > recordButton.setOnClickListener(record_listener); > stopButton.setOnClickListener(stop_listener); > }//setListeners > > > > }//audioRecorderTest2
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