錄製視頻

public class RVideoActivity extends Activity implements SurfaceHolder.Callback {
 private ImageView start;// 開始錄製按鈕
 private ImageView stop;// 中止錄製按鈕
 private MediaRecorder mediarecorder;// 錄製視頻的類
 private SurfaceView surfaceview;// 顯示視頻的控件
 boolean isRecord = true;
 private SurfaceHolder surfaceHolder;
 boolean isPreView;// 是否預覽
 Camera camera;

 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  requestWindowFeature(Window.FEATURE_NO_TITLE);// 去掉標題欄
  getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);// 設置全屏
  setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);// 設置橫屏顯示
  // 選擇支持半透明模式,在有surfaceview的activity中使用。
  getWindow().setFormat(PixelFormat.TRANSLUCENT);
  setContentView(R.layout.main);
  init();

 }

 private void init() {
  start = (ImageView) this.findViewById(R.id.tv_start);
  stop = (ImageView) this.findViewById(R.id.tv_stop);
  start.setOnClickListener(new TestVideoListener());
  stop.setOnClickListener(new TestVideoListener());
  surfaceview = (SurfaceView) this.findViewById(R.id.surfaceview);
  SurfaceHolder holder = surfaceview.getHolder();// 取得holder
  holder.addCallback(this); // holder加入回調接口
  // setType必須設置，要不出錯.
  holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

 }

 class TestVideoListener implements OnClickListener {
  @Override
  public void onClick(View v) {
   if (v == start) {
    if (isPreView && camera != null) {
     camera.startPreview();
     camera.release();
     camera = null;
    }
    mediarecorder = new MediaRecorder();// 建立mediarecorder對象
    mediarecorder.setAudioSource(MediaRecorder.AudioSource.MIC);// 從麥克風採集聲音
    // 設置錄製視頻源爲Camera(相機)
    mediarecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
    // 設置錄製完成後視頻的封裝格式THREE_GPP爲3gp.MPEG_4爲mp4
    mediarecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    mediarecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);// 聲音的編碼格式
    // 設置錄製的視頻編碼h263 h264
    mediarecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
    // 設置視頻錄製的分辨率。必須放在設置編碼和格式的後面，不然報錯
    mediarecorder.setVideoSize(320, 240);
    // 設置錄製的視頻幀率。必須放在設置編碼和格式的後面，不然報錯
    mediarecorder.setVideoFrameRate(10);
    mediarecorder.setPreviewDisplay(surfaceHolder.getSurface());
    // 設置視頻文件輸出的路徑
    mediarecorder.setOutputFile("/emmc/love1.3gp");
    try {
     // 準備錄製
     mediarecorder.prepare();
     // 開始錄製
     mediarecorder.start();
    } catch (IllegalStateException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    } catch (IOException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
   }

   if (v == stop) {
    if (mediarecorder != null) {
     // 中止錄製
     mediarecorder.stop();
     // 釋放資源
     mediarecorder.release();
     mediarecorder = null;
    }
   }
  }
 }

 @Override
 public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
  // 將holder，這個holder爲開始在oncreat裏面取得的holder，將它賦給surfaceHolder
  surfaceHolder = holder;
 }

 @Override
 public void surfaceCreated(SurfaceHolder holder) {
  try {
   camera = Camera.open();
   Camera.Parameters parameters = camera.getParameters();
   parameters.setPreviewFrameRate(5);// 每秒5幀
   parameters.setPictureFormat(PixelFormat.JPEG);// 設置照片的輸出格式
   parameters.set("jpeg-quality", 85);// 設置照片質量
   camera.setParameters(parameters);
   camera.setPreviewDisplay(holder);
   camera.startPreview();
   isPreView = true;
  } catch (IOException e) {
   e.printStackTrace();
  }
  // 將holder，這個holder爲開始在oncreat裏面取得的holder，將它賦給surfaceHolder
  surfaceHolder = holder;

 }

 @Override
 public void surfaceDestroyed(SurfaceHolder holder) {
  if (camera != null) {
   camera.startPreview();
   isPreView = false;
   camera.release();
   camera = null;// 釋放
  }
  // surfaceDestroyed的時候同時對象設置爲null
  surfaceview = null;
  surfaceHolder = null;
  mediarecorder = null;

 }

}

 

xml

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#4f5555"
    android:orientation="horizontal" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="1"
        android:gravity="center" >

        <SurfaceView
            android:id="@+id/surfaceview"
            android:layout_width="300dp"
            android:layout_height="250dp" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="7"
        android:gravity="center"
        android:orientation="vertical" >

        <ImageView
            android:id="@+id/tv_stop"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/video_recorder_recording_btn" />

        <ImageView
            android:id="@+id/tv_start"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/video_recorder_start_btn_press" />
    </LinearLayout>

</LinearLayout>