无法解析类型 java.awt.geom.AffineTransform。它是从所需的 .class 文件中间接引用的

Question

我正在使用 ItextPdf 生成 PDF 文件，但我在这一行 canvas.addImage(background, width, 0,0, height, 20, 430); 上遇到异常，即类型 java.awt.geom.AffineTransform 无法解析。它是从必需的 .class 个文件中间接引用的。在这条线上，我试图设置背景图像。请帮我解决这个异常。

public void createPDF() throws NumberFormatException, ParseException
{
    list1.add("I-Tax Number : ");
   list1.add("Category : ");
     list1.add("Service : ");
     list1.add("Number : ");
     list1.add("Amount : ");
     list1.add("Status : ");

     list2.add(iTaxNumber);
     list2.add("Bill Payment");
     list2.add("Idea Postapid");
     list2.add("9644212111");
     list2.add("100");

     list2.add("SUCCESS");

    Font trfont = new Font(FontFamily.TIMES_ROMAN, 12, Font.BOLDITALIC,
            new BaseColor(130, 130, 140));

    Font otherfont  = new Font(FontFamily.TIMES_ROMAN, 12, Font.NORMAL,
            new BaseColor(160, 160, 160));

    Font datefont  = new Font(FontFamily.TIMES_ROMAN, 12, Font.BOLD,
            new BaseColor(130, 130, 140));

    Font thanksFont = new Font(FontFamily.TIMES_ROMAN, 14, Font.BOLDITALIC,
            new BaseColor(130, 130, 140));

    Document doc = new Document(new Rectangle(792, 612));

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

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

        Log.d("PDFCreator", "PDF Path: " + path);

        File file = new File(dir, "demo98989.pdf");
        FileOutputStream fOut = new FileOutputStream(file);

        PdfWriter  docPdfWriter = PdfWriter.getInstance(doc, fOut);

        Paragraph fromTotoDate = new Paragraph("Date : 25-oct-2015", datefont);
        fromTotoDate.setAlignment(Element.ALIGN_RIGHT);
        fromTotoDate.setIndentationRight(5);

        doc.addAuthor("betterThanZero");
        doc.addCreationDate();
        doc.addProducer();
        doc.addCreator("www.xyz.com");
        doc.setPageSize(PageSize.A4);
        doc.open();

        PdfPTable table = setTable(list1, list2);
        Paragraph trId = new Paragraph("Transaction Id : 889879899", trfont);
        trId.setAlignment(Element.ALIGN_RIGHT);
        trId.setIndentationRight(65);
        Paragraph p = new Paragraph("\n\n\n\n");
        Paragraph nextline = new Paragraph("\n");// for blank line
        doc.add(fromTotoDate);
        doc.add(p);
        doc.add(trId);


        int list1size =  list1.size();
        String size = String.valueOf(list1size);
        Image trDetails_Icon;


        Bitmap bmp = BitmapFactory.decodeResource(getBaseContext().getResources(),R.drawable.trreceipt);
           ByteArrayOutputStream streamTrReceipt = new ByteArrayOutputStream();
           bmp.compress(Bitmap.CompressFormat.PNG, 100, streamTrReceipt);

           trDetails_Icon = Image.getInstance(streamTrReceipt.toByteArray());
           trDetails_Icon.scaleAbsolute(445f, 238f);
           trDetails_Icon.setAbsolutePosition(76, 516);
           doc.add(trDetails_Icon);



           doc.add(nextline);
            doc.add(table);



                Paragraph thanktouMessage = new Paragraph("Thanks for Being with Us ! ", thanksFont);
                thanktouMessage.setAlignment(Element.ALIGN_CENTER);
                doc.add(nextline);
                doc.add(thanktouMessage);
                Font contFont = new Font(FontFamily.TIMES_ROMAN, 10, Font.NORMAL,
                        new BaseColor(130, 130, 140));
                doc.add(nextline);
                Paragraph cont = new Paragraph("For more info contact us", contFont);

                cont.setAlignment(Element.ALIGN_RIGHT);
                cont.setIndentationRight(20);
                doc.add(cont);

                System.out.println("list2.get(1) = "+list2.get(1));


                float width;
                float height;
                Image background;

               Bitmap bmp1 = BitmapFactory.decodeResource(getBaseContext().getResources(),R.drawable.trans);
               ByteArrayOutputStream streamTrReceipt1 = new ByteArrayOutputStream();
               bmp1.compress(Bitmap.CompressFormat.PNG, 100, streamTrReceipt1);

               System.out.println("list2.get(1) = "+list2.get(1)+"ELSE");
               width = PageSize.A4.getWidth()-40;
                     height = (PageSize.A4.getHeight()/2)-25;
                      background = Image.getInstance(streamTrReceipt1.toByteArray());


                     PdfContentByte canvas =  docPdfWriter.getDirectContentUnder();

                    canvas.addImage(background, width, 0,0, height, 20, 430);

        Toast.makeText(getApplicationContext(), "Created...", Toast.LENGTH_LONG).show();

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

Answer 1

您使用的 iText 版本有误。您应该使用 iTextG 而不是 "plain Java" iText 版本。作为 Android 开发人员，您知道禁止在 Android.[=16= 上使用 java.awt（和 javax.nio，...）classes ]

"plain Java" iText 使用未列入 Android 白名单的 classes（例如 PdfGraphics2D class）。这就是我们创建 iTextG 的原因。 iTextG 本质上与 iText 相同，只是我们删除了对 "forbidden classes" 的所有依赖（并且 java.awt.geom.AffineTransform 是其中一个 classes）。

iTextG 中的功能略少（我们不得不放弃 PdfGraphics2D），但乍一看，我在您的代码中没有看到任何 iTextG 不支持的内容。

长话短说：将 iText 替换为其 Android 端口 iTextG，您的问题将得到解决。

无法解析类型 java.awt.geom.AffineTransform。它是从所需的 .class 文件中间接引用的

The type java.awt.geom.AffineTransform cannot be resolved. It is indirectly referenced from required .class files

java

android

pdf-generation

itext