Java version of the Kotlin SubsamplingPdfPagerAdapter. Requires version 1.0.4 of PdfViewPager

SubsamplingPdfPagerAdapter.java

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.pdf.PdfRenderer;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.view.ViewGroup;

import es.voghdev.pdfviewpager.library.R;

@SuppressWarnings("NewApi")
public class SubsamplingPdfPagerAdapter extends BasePDFPagerAdapter {
    public SubsamplingPdfPagerAdapter(Context context, String pdfPath) {
        super(context, pdfPath);
    }

    public SubsamplingPdfPagerAdapter(Context context, String pdfPath, int offScreenSize) {
        super(context, pdfPath, offScreenSize);
    }

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        View v = inflater.inflate(R.layout.view_pdf_page, container, false);

        SubsamplingScaleImageView ssiv = (SubsamplingScaleImageView)
                v.findViewById(R.id.subsamplingImageView);

        if (renderer == null || getCount() < position) {
            return v;
        }

        PdfRenderer.Page page = getPDFPage(renderer, position);

        Bitmap bitmap = bitmapContainer.get(position);
        page.render(bitmap, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY)
        page.close();

        ssiv.setImage(ImageSource.bitmap(bitmap));

        ((ViewPager) container).addView(v, 0);

        return v;
    }
}