Dear Woongki Kim,
You can indeed get the detail of the stroke using 'editor.export_' function : https://developer.myscript.com/docs/interactive-ink/1.2/android/fundamentals/import-and-export/#exporting-content
Basically, you need to call the export function with JIIX as MimeType :
editor.export_(editor.getRootBlock(), MimeType.JIIX);
Let me know if this is usefull.
Regards,
Maël
Woongki Kim
Is possible to get point array of each stroke from IINKEditor object?