Button Fields and Images

The Java example in FormExamples.addImageAppearanceToButtonField(...) shows how to update a button field appearance with an image stream.

The workflow is straightforward:

• bind the input PDF with form.bindPdf(...)
• open the image file with Files.newInputStream(...)
• call form.fillImageField(...) for the button field
• save the updated PDF

public static void addImageAppearanceToButtonField(Path inputFile, Path imageFile, Path outputFile) throws Exception {
    Form form = new Form();
    try (InputStream imageStream = Files.newInputStream(imageFile)) {
        form.bindPdf(inputFile.toString());
        form.fillImageField("Image1_af_image", imageStream);
        form.save(outputFile.toString());
    } finally {
        form.close();
    }
}