问使用PrintedPdfDocument渲染带有表情的PDF

EN

private void drawPage(PdfDocument.Page page) {
  Canvas canvas = page.getCanvas();

  // units are in points (1/72 of an inch)
  int titleBaseLine = 72;
  int leftMargin = 54;

  Paint paint = new Paint();
  paint.setColor(Color.BLACK);
  paint.setTextSize(36);
  canvas.drawText("Test Title", leftMargin, titleBaseLine, paint);

  paint.setTextSize(11);
  canvas.drawText("Test paragraph", leftMargin, titleBaseLine + 25, paint);

  paint.setColor(Color.BLUE);
  canvas.drawRect(100, 100, 172, 172, paint);
}

mPdfDocument = new PrintedPdfDocument(context, printAttributes);
mCurrentPage = mPdfDocument.startPage(1);
Canvas canvas = mCurrentPage.getCanvas();
... // add stuff to canvas
mPdfDocument.finishPage(mCurrentPage);
FileOutputStream fos = new FileOutputStream(new File(path));
mPdfDocument.writeTo(fos);
fos.close();