How to group freehand annotation strokes together on Android and iOS?

[Shirley Gong]

Question:

I am adding stylus drawing support to my app using PDFNet Android and iOS SDK. By default, whenever the user lifts the stylus up after drawing, a new annotation is created every time. How do I create Freehand annotations that contain multiple disconnected paths?

Answer:

Android:

To enable multi-stroke mode for freehand tool, use the following:

mToolManager.setTool(mToolManager.createTool(com.pdftron.pdf.tools.ToolManager.e_ink_create, null));
((com.pdftron.pdf.tools.FreehandCreate)mToolManager.getTool()).setMultiStrokeMode(true);

To enable advanced stylus writing mode (when enabled, user will be able to use stylus as inking tool and use finger to pan and zoom; strokes are grouped by location and timing), use the following:

mToolManager.setStylusAsPen(true);

iOS:

To enable multi-stroke mode for freehand tool, use the following:

FreeHandCreate* fhc = (FreeHandCreate*)[_toolManager changeTool:[FreeHandCreate class]];
fhc.multistrokeMode = YES;
fhc.delegate = self;

[Azarias Fergus]

Do you know of any place where I can get documentation for the freehandCreate Class?

[Ryan]

For Android see here.

https://www.pdftron.com/pdfnet/mobile/docs/Android/tools/javadoc/reference/packages.html

https://www.pdftron.com/pdfnet/mobile/docs/Android/tools/javadoc/reference/com/pdftron/pdf/tools/FreehandCreate.html