android webserviceandroid多媒体录制

还是先看代码，用一种最笨的方式实现了录音的功能：  try {  String path = "/sdcard/recorder.amr";  MediaRecorder recorder = new MediaRecorder();  recorder.setAudioSource(MediaRecorder.AudioSource.MIC);  recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);  recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);  recorder.setOutputFile(path+name);  recorder.prepare();  recorder.start();  try {  Runnable.wait(10000);  } catch (Exception exp) {  exp.printStackTrace();  }  recorder.stop();  recorder.release();  } catch (IllegalStateException e) {  e.printStackTrace();  } catch (IOException e) {  e.printStackTrace();  }  10秒钟哦，等也得等，不等也得等，不用线程怎么行。  录像就是Audio+Video，所以还要加点东西，看代码：  path = "/sdcard/v.3gp";  recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);  recorder.setAudioSource(MediaRecorder.AudioSource.MIC);  recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);  recorder.setVideoSize(176, 144);  recorder.setVideoFrameRate(15);  recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);  recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);  recorder.setOutputFile(path);  理论上是没错的，可我用模拟器测试录制视频还是会报错