ScreenSharingFragment.java 文件源码

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void setUpVirtualDisplay() {

    mScreen = (ViewGroup) getActivity().getWindow().getDecorView().getRootView();

    // display metrics
    DisplayMetrics metrics = getResources().getDisplayMetrics();
    mDensity = metrics.densityDpi;
    Display mDisplay = getActivity().getWindowManager().getDefaultDisplay();

    Point size = new Point();
    mDisplay.getRealSize(size);
    mWidth = size.x;
    mHeight = size.y;

    // start capture reader
    mImageReader = ImageReader.newInstance(mWidth, mHeight, PixelFormat.RGBA_8888, 2);
    int flags = DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR;

    mVirtualDisplay = mMediaProjection.createVirtualDisplay("ScreenCapture", mWidth, mHeight, mDensity, flags, mImageReader.getSurface(), null, null);

    size.set(mWidth, mHeight);

    //create ScreenCapturer
    mScreenCapturer = new ScreenSharingCapturer(getActivity(), mScreen, mImageReader);

    mListener.onScreenCapturerReady();
}