andriod显示录制视频的简单dome

话不多说，上步骤

（1）获取SurfaceView的id

SurfaceView main_sfv = (SurfaceView) findViewById(R.id.mian_sfv);
（2）实例化媒体录制器
MediaRecorder mediaRecorder = new MediaRecorder();（3）button跳进方法，执行如下dome
mediaRecorder.reset();mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);mediaRecorder.setVideoEncodingBitRate(3);//设置保存的路径mediaRecorder.setOutputFile("mnt/sdcard/G150825_"+System.currentTimeMillis()+".mp4");//将画面展示到SurfaceViewmediaRecorder.setPReviewDisplay(main_sfv.getHolder().getSurface());try {    mediaRecorder.prepare();    mediaRecorder.start();} catch (IOException e) {    e.printStackTrace();}
（注意权限）
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /><uses-permission android:name="android.permission.CAMERA" /><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />