TOPIC:

Excuse me,
How to change transition PDFView to PDFViewCurl in ViewLib new version like 3.50.2?
In old version there is PDFViewCurl but in new version this class is depracated.

do you mean:
Intent intent = new Intent(this, com.radaee.reader.PDFGLSimpleAct.class);
intent.putExtra("MODE", "CURL");
startActivity(intent);

Yes, but PDFViewCurl class in new version is depracated.
In old version i use
switch (pos) {
case 0:
pdfView.PDFSetView(PDFReader.VERTICAL);
editor.putInt("pdf_view_type", PDFReader.VERTICAL);
break;
case 1:
pdfView.PDFSetView(PDFReader.HORIZONTAL);
editor.putInt("pdf_view_type", PDFReader.HORIZONTAL);
break;
case 2:
pdfView.PDFSetView(PDFReader.CURL);
editor.putInt("pdf_view_type", PDFReader.CURL);
break;
}

And in PDFReader class

case 2:
m_view = new PDFViewCurl(this.getContext());
back_color = 0xFFFFFFFF;
break;

in new version, you have to use PDFGLLayoutView:
m_view = new PDFGLLayoutView(this);
m_view.PDFOpen(m_doc, listener);
m_view.PDFSetView(2);//curl effect.