MediaRecorder前后摄像头同时录像

上一篇camera前后摄像头同时预览的后续,前后摄像头同时录像。

直接上重要的代码就好。

/**

*初始化控件以及回调

*/

private void init() {

surfaceview1 = (SurfaceView) this.findViewById(R.id.surfaceview1);

surfaceview2 = (SurfaceView) this.findViewById(R.id.surfaceview2);

lay = (LinearLayout) this.findViewById(R.id.lay1);

lay = (LinearLayout) this.findViewById(R.id.lay2);

start = (Button) this.findViewById(R.id.start);

stop = (Button) this.findViewById(R.id.stop);

//lay.setVisibility(LinearLayout.INVISIBLE);

surfaceHolder1 = this.surfaceview1.getHolder();// 取得holder

surfaceHolder1.addCallback(new Callback() {

@Override

public void surfaceChanged(SurfaceHolder holder1, int format, int width, int height) {

// TODO Auto-generated method stub

// 将holder,这个holder为开始在oncreat里面取得的holder,将它赋给surfaceHolder

Log.i("SurfaceHolder", "surfaceChanged()");

surfaceHolder1 = holder1;

}

@Override

public void surfaceCreated(SurfaceHolder holder1) {

// TODO Auto-generated method stub

Log.i("SurfaceHolder", Thread.currentThread().getName());

// 将holder,这个holder为开始在oncreat里面取得的holder,将它赋给surfaceHolder

surfaceHolder1 = holder1;

// 录像线程,当然也可以在别的地方启动,但是一定要在onCreate方法执行完成以及surfaceHolder被赋值以后启动

}

@Override

public void surfaceDestroyed(SurfaceHolder arg0) {

// TODO Auto-generated method stub

Log.i("SurfaceHolder", "surfaceDestroyed()");

// surfaceDestroyed的时候同时对象设置为null

surfaceview1 = null;

surfaceHolder1 = null;

/*释放资源 mediarecorder mCamera 否则会后果很严重*/

if (thread1!=null) {

thread1.stopRecord();

thread1=null;

}

}

}); // holder加入回调接口

// 设置setType

surfaceHolder1.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

surfaceHolder2 = this.surfaceview2.getHolder();// 取得holder

surfaceHolder2.addCallback(new Callback() {

@Override

public void surfaceChanged(SurfaceHolder holder2, int format, int width, int height) {

// TODO Auto-generated method stub

// 将holder,这个holder为开始在oncreat里面取得的holder,将它赋给surfaceHolder

Log.i("SurfaceHolder", "surfaceChanged()");

surfaceHolder2 = holder2;

}

@Override

public void surfaceCreated(SurfaceHolder holder2) {

// TODO Auto-generated method stub

Log.i("SurfaceHolder", Thread.currentThread().getName());

// 将holder,这个holder为开始在oncreat里面取得的holder,将它赋给surfaceHolder

surfaceHolder2 = holder2;

// 录像线程,当然也可以在别的地方启动,但是一定要在onCreate方法执行完成以及surfaceHolder被赋值以后启动

}

@Override

public void surfaceDestroyed(SurfaceHolder arg0) {

// TODO Auto-generated method stub

Log.i("SurfaceHolder", "surfaceDestroyed()");

// surfaceDestroyed的时候同时对象设置为null

surfaceview2 = null;

surfaceHolder2 = null;

/*释放资源 mediarecorder mCamera 否则会后果很严重*/

if (thread2!=null) {

thread2.stopRecord();

thread2=null;

}

}

}); // holder加入回调接口

// 设置setType

surfaceHolder2.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

接下来是两个按钮的点击事件:

start.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

if (thread1==null) {

thread1 = new RecordThread(10*60*1000, surfaceview1, surfaceHolder1,66);

thread1.start();

thread2 = new RecordThread(10*60*1000, surfaceview2, surfaceHolder2,88);

thread2.start();

}else {

Toast.makeText(MainActivity.this, "正在录制中……", Toast.LENGTH_SHORT).show();

}

}

});

stop.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

if (thread1 != null || thread2 != null) {

thread1.stopRecord();

thread1=null;

thread2.stopRecord();

thread2=null;

}else {

Toast.makeText(MainActivity.this, "视频录制还没开始", Toast.LENGTH_SHORT).show();

}

}

});

录像的线程RecordThread.java

public RecordThread(long recordTime, SurfaceView surfaceview,

SurfaceHolder surfaceHolder,int camId) {

this.recordTime = recordTime;//定时时间

this.surfaceview = surfaceview;

this.surfaceHolder = surfaceHolder;

this.Mcameraid = camId;

}

public voidrun(){

/**

* 开始录像

*/

startRecord(Mcameraid);

/**

* 启动定时器,到规定时间recordTime后执行停止录像任务

*/

Timer timer = new Timer();

timer.schedule(new TimerThread(), recordTime);

}

public void startRecord(int McameraId) {

//自己动手丰衣足食

根据传入参数McameraId判断,用open(cameraid)开启前后摄像头,启动MediaRecorder录像

MediaRecorder录像不懂的点这里

}

/**

*停止录制

*/

public void stopRecord() {

Log.d("lyb","stopRecord()");

surfaceview = null;

surfaceHolder = null;

if (mediarecorder != null) {

// 停止录制

mediarecorder.stop();

mediarecorder.reset();

// 释放资源

mediarecorder.release();

mediarecorder = null;

if (mCamera != null) {

mCamera.release();

mCamera = null;

}

}

}

/**

*定时器

*

* @author bcaiw

*

*/

class TimerThread extends TimerTask {

/**

* 停止录像

*/

@Override

public void run() {

stopRecord();

this.cancel();

}

}


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