private void initResourceRefs() {
    mVideoTipsLy = (RelativeLayout) findViewById(R.id.video_call_in_ly);
    mVideoIcon = (ImageView) findViewById(R.id.video_icon);

    mVideoTopTips = (TextView) findViewById(R.id.notice_tips);
    mVideoCallTips = (TextView) findViewById(R.id.video_call_tips);

    mVideoCancle = (Button) findViewById(R.id.video_botton_cancle);
    mVideoBegin = (Button) findViewById(R.id.video_botton_begin);
    mVideoStop = (Button) findViewById(R.id.video_stop);
    mVideoStop.setEnabled(false);
    mVideoCancle.setOnClickListener(this);
    mVideoBegin.setOnClickListener(this);
    mVideoStop.setOnClickListener(this);

    mVideoView = (SurfaceView) findViewById(R.id.video_view);
    mVideoView.getHolder().setFixedSize(240, 320);
    mLoaclVideoView = (RelativeLayout) findViewById(R.id.localvideo_view);
    mVideoLayout = (FrameLayout) findViewById(R.id.Video_layout);
    mCameraSwitch = (ImageButton) findViewById(R.id.camera_switch);
    mCameraSwitch.setOnClickListener(this);

    mCallStatus = (TextView) findViewById(R.id.call_status);
    mCallStatus.setVisibility(View.GONE);
    // mVideoView.getHolder().setFixedSize(width, height);
    VoiceHelper.getInstance().getDevice().setVideoView(mVideoView, null);

    // Create a RelativeLayout container that will hold a SurfaceView,
    // and set it as the content of our activity.
    SurfaceView localView = ViERenderer.CreateLocalRenderer(this);
    mLoaclVideoView.addView(localView);
  }
  @Override
  protected void onResume() {
    super.onResume();

    if (mLoaclVideoView != null && mLoaclVideoView.getVisibility() == View.VISIBLE) {
      SurfaceView localView = ViERenderer.CreateLocalRenderer(this);
      mLoaclVideoView.addView(localView);
    }

    lockScreen();
  }