WebView截图

gist

Picture picture = webView.capturePicture();
int weight = picture.getWidth();
int height = picture.getHeight();
if (weight > 0 && height > 0) {
  Bitmap bitmap = Bitmap.createBitmap(weight, height,
  Bitmap.Config.ARGB_8888);
  Canvas canvas = new Canvas(bitmap);
  picture.draw(canvas);
}