1、Mainfest.xml中的权限设置权限：<uses-permission android:name="andro足毂忍珩id.permission.WRITE_EXTERNAL_STORAGE" /><uses-permission android:name="android.permission.CAMERA" /><uses-permission android:name="android.permission.RECORD_AUDIO" />例子中先用mediarecorder录制保存一个视频然后播放看看效果，点击“跳转”可以调到第二个Main2Activity中，用VideoView播放刚才录制的视频，Main2Activity主要测试如何播放在本地手机的视频。
2、新建一个空白窗口Activity的XML布局视图：
3、Activity的代码如下：publ坡纠课柩ic class MainActivity extends AppCompatA艘早祓胂ctivity implements SurfaceHolder.Callback{private static final String TAG = "MainActivity";private SurfaceView mSurfaceview;private Button btn_start_or_stop;private Button btn_play;private Button btn_turnto;private boolean isRecording = false;//是否正在录像private boolean isPlay = false;//是否正在播放录像private MediaRecorder mRecorder;private SurfaceHolder mSurfaceHolder;private ImageView mImageView;private Camera camera;private MediaPlayer mediaPlayer;private String path;private TextView time;private int text = 0;private Handler handler = new Handler();private Runnable runnable = new Runnable() {@Overridepublic void run() {text++;time.setText("录制"+text+"秒");handler.postDelayed(this,1000);}};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.activity_main);mSurfaceview = (SurfaceView) findViewById(R.id.surfaceview);mImageView = (ImageView) findViewById(R.id.imageview);btn_start_or_stop = (Button) findViewById(R.id.btn_start_or_stop);btn_turnto = (Button) findViewById(R.id.btn_turnto);btn_play = (Button) findViewById(R.id.btn_play);time = (TextView)findViewById(R.id.time);btn_turnto.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {if (path != null){File file = new File(path);if(file.exists()){Intent intent = new Intent(MainActivity.this,Main2Activity.class);intent.putExtra("path",path);startActivity(intent);}else {Toast.makeText(MainActivity.this,"视频文件不存在",Toast.LENGTH_SHORT).show();}}else {Toast.makeText(MainActivity.this,"文件路径不存在",Toast.LENGTH_SHORT).show();}}});btn_start_or_stop.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {if (isPlay){if (mediaPlayer != null){isPlay = false;mediaPlayer.stop();mediaPlayer.reset();mediaPlayer.release();mediaPlayer = null;}}if (!isRecording){handler.postDelayed(runnable,1000);mImageView.setVisibility(View.GONE);if (mRecorder == null){mRecorder = new MediaRecorder();// 创建mediarecorder对象text = 0;//当点击停止之后，每一次进到这里都要重置录制的时间数}camera = Camera.open(Camera.CameraInfo.CAMERA_FACING_BACK);if (camera != null){camera.setDisplayOrientation(90);//摄像图旋转90度camera.unlock();mRecorder.setCamera(camera); // 设置录制视频源为Camera(相机)}try{mRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER); // 这两项需要放在setOutputFormat之前mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); // 这两项需要放在setOutputFormat之前mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); //设置录制视频的输出格式mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); //设置音频编码格式mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP); //设置视频编码格式// 设置录制的视频编码h263 h264mRecorder.setVideoSize(640,480); //设置视频的分辨率,必须放在设置编码和格式的后面，否则报错mRecorder.setVideoFrameRate(30); //这是设置视频录制的帧率，即1秒钟30帧。。必须放在设置编码和格式的后面，否则报错mRecorder.setVideoEncodingBitRate(4 * 1024 * 1024); //这个属性很重要，这个也直接影响到视频录制的大小，这个设置的越大，视频越清晰mRecorder.setOrientationHint(90);//视频旋转90度mRecorder.setMaxDuration(30 * 1000); //设置录制最长时间为30秒mRecorder.setPreviewDisplay(mSurfaceHolder.getSurface()); //设置录制视频时的预览画面path = getSdPath();if (path != null){File dir = new File(path + "/recordtest");if (!dir.exists()){dir.mkdir();}path = dir + "/" + getDate() + ".mp4";mRecorder.setOutputFile(path); // 设置视频文件输出的路径mRecorder.prepare();// 准备录制mRecorder.start();// 开始录制isRecording = true;btn_start_or_stop.setText("停止");}}catch (Exception e){e.printStackTrace();}}else {if (isRecording){try {handler.removeCallbacks(runnable);mRecorder.stop();// 停止录制mRecorder.reset();// 恢复到未初始化的状态mRecorder.release();// 释放资源mRecorder = null;btn_start_or_stop.setText("开始");if (camera != null){camera.release();camera = null;}}catch (Exception e){e.printStackTrace();}isRecording = false;}}}});btn_play.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {isPlay = true;mImageView.setVisibility(View.GONE);if (mediaPlayer == null){mediaPlayer = new MediaPlayer();}mediaPlayer.reset();Uri uri = Uri.parse(path);if (uri == null){Toast.makeText(MainActivity.this,"请先录制视频",Toast.LENGTH_SHORT).show();return;}mediaPlayer = MediaPlayer.create(MainActivity.this,uri); //使用mediaplayer播放uri视频mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); //设置播放流媒体类型。mediaPlayer.setDisplay(mSurfaceHolder); // 设置屏幕try{mediaPlayer.prepare();}catch (Exception e){e.printStackTrace();}mediaPlayer.start();}});SurfaceHolder holder = mSurfaceview.getHolder();holder.addCallback(this);holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);}@Overrideprotected void onResume() {super.onResume();if (!isRecording){mImageView.setVisibility(View.VISIBLE);}}@Overridepublic void surfaceCreated(SurfaceHolder holder) {mSurfaceHolder = holder;}/*** 获取系统时间** @return*/private static String getDate(){Calendar calendar = Calendar.getInstance();int year = calendar.get(Calendar.YEAR);int month = calendar.get(Calendar.MONTH);int day = calendar.get(Calendar.DATE);int minute = calendar.get(Calendar.MINUTE);int hour = calendar.get(Calendar.HOUR);int second = calendar.get(Calendar.SECOND);String date = "" + year + (month + 1) + day + hour + minute + second;return date;}/*** 获取SD path** @return*/public String getSdPath(){File sdDir = null;boolean sdCardExist = Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);//判断sd卡是否存在if (sdCardExist){sdDir = Environment.getExternalStorageDirectory();//获取根目录return sdDir.toString();}return null;}@Overridepublic void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {// 将holder，这个holder为开始在onCreate里面取得的holder，将它赋给mSurfaceHoldermSurfaceHolder = holder;}@Overridepublic void surfaceDestroyed(SurfaceHolder holder) {// surfaceDestroyed的时候同时对象设置为nullmSurfaceview = null;mSurfaceHolder = null;handler.removeCallbacks(runnable);if (mRecorder != null) {mRecorder.release();mRecorder = null;}if (camera != null) {camera.release();camera = null;}if (mediaPlayer != null){mediaPlayer.release();mediaPlayer = null;}}}
4、最终效果图如下：
