PdfRendererPreV Class

Definition

[Android.Runtime.Register("android/graphics/pdf/PdfRendererPreV", ApiSince=35, DoNotGenerateAcw=true)]
public sealed class PdfRendererPreV : Java.Lang.Object, IDisposable, Java.Interop.IJavaPeerable, Java.Lang.IAutoCloseable

[<Android.Runtime.Register("android/graphics/pdf/PdfRendererPreV", ApiSince=35, DoNotGenerateAcw=true)>]
type PdfRendererPreV = class
    inherit Object
    interface IAutoCloseable
    interface IJavaObject
    interface IDisposable
    interface IJavaPeerable

Inheritance

Object

Object

PdfRendererPreV

Attributes

RegisterAttribute

Implements

IJavaObject IJavaPeerable IAutoCloseable IDisposable

Remarks

This class enables rendering a PDF document and selecting, searching, fast scrolling, annotations, etc from Android R till Android U. 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 will need to create a new instance of renderer for each document. To render each page, you open the page using the renderer instance created earlier, 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
            try (PdfRendererPreV renderer = new PdfRendererPreV(getSeekableFileDescriptor(), loadParams)) {
                 // let us just render all pages
                 final int pageCount = renderer.getPageCount();
                 for (int i = 0; i < pageCount; i++) {
                     Page page = renderer.openPage(i);
                     RenderParams params = new RenderParams.Builder(Page.RENDER_MODE_FOR_DISPLAY).build();

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

                     // do stuff with the bitmap

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

<h3>Print preview and print output</h3>

Please refer to PdfRenderer for fulfilling this usecase.

Java documentation for android.graphics.pdf.PdfRendererPreV.

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Constructors

Fields

Properties

Methods

Explicit Interface Implementations

Extension Methods

Applies to