如何在android中通过display android获取截图

DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
int screenWidth = metrics.widthPixels;
int screenHeight = metrics.heightPixels;

MediaProjectionManager projectionManager = (MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE);
Intent projectionIntent = projectionManager.createScreenCaptureIntent();
startActivityForResult(projectionIntent, REQUEST_CODE);

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQUEST_CODE && resultCode == RESULT_OK) {
        MediaProjection mediaProjection = projectionManager.getMediaProjection(resultCode, data);
        // 进行截屏操作
    }
}

ImageReader imageReader = ImageReader.newInstance(screenWidth, screenHeight, PixelFormat.RGBA_8888, 1);
VirtualDisplay virtualDisplay = mediaProjection.createVirtualDisplay("ScreenCapture", screenWidth, screenHeight, metrics.densityDpi, DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR, imageReader.getSurface(), null, null);
Image image = imageReader.acquireLatestImage();
if (image != null) {
    Image.Plane[] planes = image.getPlanes();
    ByteBuffer buffer = planes[0].getBuffer();
    int pixelStride = planes[0].getPixelStride();
    int rowStride = planes[0].getRowStride();
    int rowPadding = rowStride - pixelStride * screenWidth;
    Bitmap bitmap = Bitmap.createBitmap(screenWidth + rowPadding / pixelStride, screenHeight, Bitmap.Config.ARGB_8888);
    bitmap.copyPixelsFromBuffer(buffer);
    image.close();
    // 对获取到的bitmap进行处理，如保存到文件或展示在ImageView中
}