有没有办法旋转在Android中使用PdfDocument画布创建的PDF文件

Question

有没有办法旋转在Android中使用PdfDocument画布创建的PDF文件，或者有没有办法在保存到Android上的手机之前旋转pdf文件？

Answer 1

Yes there is a way. Use canvas.rotate(90); before drawing anything in the canvas of PDF document.

canvas.save();
// rotate with respect to center of the page.
canvas.rotate(90, canvas.getWidth() / 2, canvas.getHeight() / 2);
canvas.draw(/*whatever*/);
canvas.restore();