PdfRenderer

public final class PdfRenderer
extends Object implements AutoCloseable

This class enables rendering a PDF document and selecting, searching, fast scrolling, annotations, etc. from Android V. This class is thread safe and can be called by multiple threads however only one thread will be executed at a time as the access is synchronized by internal locking.

If you want to render a PDF, you create a renderer and for every page you want to render, you open the page, render it, and close the page. After you are done with rendering, you close the renderer. After the renderer is closed it should not be used anymore. Note that the pages are rendered one by one, i.e. you can have only a single page opened at any given time.

A typical use of the APIs to render a PDF looks like this:

 // create a new renderer
 PdfRenderer renderer = new PdfRenderer(getSeekableFileDescriptor());

 // let us just render all pages
 final int pageCount = renderer.getPageCount();
 for (int i = 0; i < pageCount; i++) {
     Page page = renderer.openPage(i);

     // say we render for showing on the screen
     page.render(mBitmap, null, null, Page.RENDER_MODE_FOR_DISPLAY);

     // do stuff with the bitmap

     // close the page
     page.close();
 }

 // close the renderer
 renderer.close();
 

Print preview and print output

If you are using this class to rasterize a PDF for printing or show a print preview, it is recommended that you respect the following contract in order to provide a consistent user experience when seeing a preview and printing, i.e. the user sees a preview that is the same as the printout.

• Respect the property whether the document would like to be scaled for printing as per shouldScaleForPrinting().
• When scaling a document for printing the aspect ratio should be preserved.
• Do not inset the content with any margins from the Print