Signature field flattening is not working about pdfiumandroid HOT 6 CLOSED

Sorry not mentioning it immediately. Thanks for update, I will pull it.

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Creating bitmap doesn't flatten pdf document. There is method for flattening in Pdfium, but it's not exposed in Java.

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I thought renderPageBitmap performed flattening + conversion to Bitmap all togheter.

What is the corresponding C++ method in the library to do this? (i don't know too much about C++ but if it's not too hard i can try to create a PR with a wrapper function for this feature)

PS: i've found it, should be this if i'm not wrong

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I've performed some researches and work, i've created a new method and in the last part of it (following the renderPageBitmap code) I've added the central lines.

....
FPDFBitmap_FillRect( pdfBitmap, baseX, baseY, baseHorSize, baseVerSize,
                     0xFFFFFFFF); //White

//flat the page before proceeding with Bitmap creation
const int result = FPDFPage_Flatten(page, flatType);
if (result == FLATTEN_FAIL){
    jniThrowException(env, "com/shockwave/pdfium/PdfiumCore", "PDF flattening has failed.");
}

FPDF_RenderPageBitmap( pdfBitmap, page,
                       startX, startY,
                       (int)drawSizeHor, (int)drawSizeVer,
                       0, flags );
.....

i've tried with 2 different sample PDF with form fields filled, but a the end i only get a PDF without them.
Maybe i need to save and reopen the document?
Any suggestions?

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Sorry, I forgot to mention that you should try using last parameter of .renderPage() method, which is boolean renderAnnot. It should render annotations and forms.

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Lol, now it's working fine passing true to the renderAnnot param.
I've wasted an evening working on something which was already working XD (at least i've learned something new 😋)
Btw thank you man, i've created a PR to update the example code to avoid future issues on the same thing

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