Question

我正在尝试使用android.graphics.pdf创建PDF。我的问题是多页。我可以给android.graphics.pdf html，然后可以打印到PDF。现在，如果文本溢出设置页面大小，则不起作用。是否有可能给它所有的html，它会根据页面大小的内容创建多个页面？和TCPDF一样:)）

请注意。我试图通过计算内容的高度来避免创建单独的多个页面。

Answer 1

为此，您需要将 iTextG 的jar添加到您的项目中：

   public void createandDisplayPdf(String text) {

    Document doc = new Document();

    try {
        String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Dir";

        File dir = new File(path);
        if(!dir.exists())
            dir.mkdirs();

        File file = new File(dir, "newFile.pdf");
        FileOutputStream fOut = new FileOutputStream(file);

        PdfWriter.getInstance(doc, fOut);

        //open the document
        doc.open();

        Paragraph p1 = new Paragraph(text);
        Font paraFont= new Font(Font.COURIER);
        p1.setAlignment(Paragraph.ALIGN_CENTER);
        p1.setFont(paraFont);

        //add paragraph to document
        doc.add(p1);    

    } catch (DocumentException de) {
        Log.e("PDFCreator", "DocumentException:" + de);
    } catch (IOException e) {
        Log.e("PDFCreator", "ioException:" + e);
    }
    finally {
        doc.close();
    }

    viewPdf("newFile.pdf", "Dir");
}

// Method for opening a pdf file
private void viewPdf(String file, String directory) {

    File pdfFile = new File(Environment.getExternalStorageDirectory() + "/" + directory + "/" + file);
    Uri path = Uri.fromFile(pdfFile);

    // Setting the intent for pdf reader
    Intent pdfIntent = new Intent(Intent.ACTION_VIEW);
    pdfIntent.setDataAndType(path, "application/pdf");
    pdfIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

    try {
        startActivity(pdfIntent);
    } catch (ActivityNotFoundException e) {
        Toast.makeText(TableActivity.this, "Can't read pdf file", Toast.LENGTH_SHORT).show();
    }
}

使用android.graphics.pdf创建多页PDF

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