Android PDF Viewer SDK 3.6.2

A new beta version has been published here :
3.6.2beta1
- NEW Document.EncryptAs support AES 256bits now, according to Acrobat X(not extension level 3, but level 8 )
java-doc shall be refreshed.
- NEW now support UCS4(32 bits unicode, out of BMP range) font embeding.
- NEW RDPDFReader support undo/redo now.
include operations:
1.undo/redo New Annotation for all UI implemented types(Ink/Rect/Oval/Stamp/Line/Text Note).
2.undo/redo Delete Annotation.
3.undo/redo Annotation Moving.
- FIX dead lock when generate thumbnail failed for PDFGridView.
- FIX issue for JPEG colorspace converting.
- FIX an issue for Document.GetXMP()
- FIX an issue for PDFLayout.vRenderAsync();

A new beta version has been published here :
3.6.2beta2
- NEW using truetype (apache license) subtitute symbol font.
- FIX change permission to -1, when using owner password open PDF file.
- FIX text direction issue.
- FIX rect issue for editbox.
- FIX issue for blank space check.

A new release candidate version has been published here :
3.6.1RC
- NEW interfaces:
Document.GetEmbedFilesCount()
Document.GetEmbedFileName()
Document.GetEmbedFileData()
- NEW interface: Page.FlatAnnots() it removes all annotations on the page, and render it as normal page contents.
- NEW support over printing mode, may lite slower rendering for over printing.
using Global.render_mode = 2 in Global.default_config() to enable over printing mode
in ARM64 mode, it is supported by default, others need modify codes in manuals way.

[What is over printing?
like draw ink,
first time draw red ink.
and second time draw blue ink
crossed nodes shall be purple.]

- FIX rotated editbox annotation.
- FIX all rendering issues
- FIX adjust some codes to check null pointer in Document.GetXMP();
- FIX a crashed issue for Annotation.SetEditText();
- FIX huge image rendering quality.
- FIX free edit text direction for extension entry ("Rotate" entry)
- FIX the issue for multi-media annotations.
- FIX issue for Page.AddResForm return null.
- FIX an issue for Page importing with bad data.
- FIX the crashed issue, for 2 PDF files that have bad data in image object.
- FIX OOM issue, when page size is negative value.

A new release candidate version has been published here :
3.6.2 RC2
- FIX dual page mode issue. both in PDFReader and RDPDFReader
- FIX issue when adding editbox with zero line with.
- FIX issue for dual page when fling.
- FIX a crashed issue for a special PDF, divide by zero.
- FIX a rendering issue for shading pattern.(line gap between trangle filling)
- FIX memory leaks for ViewPager.

A new release candidate version has been published here :
3.6.2 RC3
- NEW methods PDFLayout.vGetMinScale() and PDFLayout.vGetMaxScale()
- NEW add double tap events callback.
- ENHANCED speed up triangle shading rendering
- FIX combo list issue.
- FIX freetype bugs when loading "post" table, and load correct glyph using char name.
- FIX loading DroidSansFallback first, if failed, using NotoSans fonts.
- FIX edit can't display texts.
- FIX change fonts setting for Global class.