小编Mr *_*aha的帖子

这是我的代码：

 public  void CreateDirectory() throws FileNotFoundException {
        File pdfFolder = new File(Environment.getExternalStoragePublicDirectory(
                Environment.DIRECTORY_DOCUMENTS), "pdfdemo");
        if (!pdfFolder.exists()) {
            pdfFolder.mkdir();
        }


        //Create time stamp
        Date date = new Date() ;
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(date);

        File myFile = new File(pdfFolder + timeStamp + ".pdf");

        OutputStream output = new FileOutputStream(myFile);

        //Initialize PDF writer
        PdfWriter writer = new PdfWriter(myFile.getPath());

        //Initialize PDF document
        PdfDocument pdf = new PdfDocument(writer);

        // Initialize document
        Document document = new Document(pdf);

        //Add paragraph to the document

    document.add(new Paragraph("Hello World!"));

    document.close(); …