Question

我正在创建一个应用程序，按钮点击我打印pdf上的所有内容为此目的我使用itextpdf就字符串而言它被打印但是我是无法打印图像我做了一些研究，但没有得到一个适当的解决方案，除了图像一切都工作正常这是我制作pdf的代码

private Image addImageToPdf(Uri uri) {
    Image image = null;
    try {
        Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
        image = Image.getInstance(stream.toByteArray());
    } catch (IOException e) {
        e.printStackTrace();
    } catch (BadElementException e) {
        e.printStackTrace();
    } finally {
        return image;
    }

}

     public void addTitlePage(Document document) throws DocumentException
        {
            // Font Style for Document
            Font catFont = new Font(Font.FontFamily.TIMES_ROMAN, 18, Font.BOLD);
            Font titleFont = new Font(Font.FontFamily.TIMES_ROMAN, 22, Font.BOLD| Font.UNDERLINE, BaseColor.GRAY);
            Font smallBold = new Font(Font.FontFamily.TIMES_ROMAN, 12, Font.BOLD);
            Font normal = new Font(Font.FontFamily.TIMES_ROMAN, 12, Font.NORMAL);

            // Start New Paragraph
            Paragraph prHead = new Paragraph();
            // Set Font in this Paragraph
            prHead.setFont(titleFont);
            // Add item into Paragraph
            prHead.add("Infomedia\n");
            //prHead.add("\n");
            prHead.setAlignment(Element.ALIGN_CENTER);

            Paragraph cat = new Paragraph();
            cat.setFont(catFont);
            cat.add("\n");
            cat.add("Report\n");
            cat.add("\n");
            cat.setAlignment(Element.ALIGN_CENTER);

            // Add all above details into Document
            document.add(prHead);
            document.add(cat);
            document.add(table);

            /* Header values*/
            table = new PdfPTable(2);
            cell1 = new PdfPCell(new Phrase("Category"));
            cell2 = new PdfPCell(new Phrase("Values"));
            cell1.setVerticalAlignment(Element.ALIGN_LEFT);
            cell2.setVerticalAlignment(Element.ALIGN_LEFT);

            cell1.setBorder(Rectangle.NO_BORDER);
            cell1.setPadding(5);

            cell2.setBorder(Rectangle.NO_BORDER);
            cell2.setPadding(5);

            cell1.setBackgroundColor(BaseColor.GRAY);
            cell2.setBackgroundColor(BaseColor.GRAY);

            /*Table values*/
            cell3 = new PdfPCell(new Phrase("From"));
            cell3.setHorizontalAlignment(Element.ALIGN_LEFT);
            cell3.setBorder(Rectangle.NO_BORDER);
            cell3.setPadding(5);

            cell4 = new PdfPCell(new Phrase(arrival));
            cell4.setHorizontalAlignment(Element.ALIGN_LEFT);
            cell4.setBorder(Rectangle.NO_BORDER);
            cell4.setPadding(5);

            cell5 = new PdfPCell(new Phrase("To"));
            cell5.setHorizontalAlignment(Element.ALIGN_LEFT);
            cell5.setBorder(Rectangle.NO_BORDER);
            cell5.setPadding(5);

            cell6 = new PdfPCell(new Phrase(destination));
            cell6.setHorizontalAlignment(Element.ALIGN_LEFT);
            cell6.setBorder(Rectangle.NO_BORDER);
            cell6.setPadding(5);

            cell7 = new PdfPCell(new Phrase("Travel Purpose"));
            cell7.setHorizontalAlignment(Element.ALIGN_LEFT);
            cell7.setBorder(Rectangle.NO_BORDER);
            cell7.setPadding(5);

            cell8 = new PdfPCell(new Phrase(travel_type));
            cell8.setHorizontalAlignment(Element.ALIGN_LEFT);
            cell8.setBorder(Rectangle.NO_BORDER);
            cell8.setPadding(5);

            cell9 = new PdfPCell(new Phrase("Work Description"));
            cell9.setHorizontalAlignment(Element.ALIGN_LEFT);
            cell9.setBorder(Rectangle.NO_BORDER);
            cell9.setPadding(5);

            cell10 = new PdfPCell(new Phrase(workdescription));
            cell10.setHorizontalAlignment(Element.ALIGN_LEFT);
            cell10.setBorder(Rectangle.NO_BORDER);
            cell10.setPadding(5);

            cell11 = new PdfPCell(new Phrase("Expense Given"));
            cell11.setHorizontalAlignment(Element.ALIGN_LEFT);
            cell11.setBorder(Rectangle.NO_BORDER);
            cell11.setPadding(5);

            cell12 = new PdfPCell(new Phrase(expense_amount));
            cell12.setHorizontalAlignment(Element.ALIGN_LEFT);
            cell12.setBorder(Rectangle.NO_BORDER);
            cell12.setPadding(5);

              cell13 = new PdfPCell(new Phrase("Pass"));
        cell13.setHorizontalAlignment(Element.ALIGN_LEFT);
        cell13.setBorder(Rectangle.NO_BORDER);
        cell13.setPadding(5);

        cell14 = new PdfPCell(new Phrase(addImageToPdf(imageView)));
        cell14.setHorizontalAlignment(Element.ALIGN_LEFT);
        cell14.setBorder(Rectangle.NO_BORDER);
        cell14.setPadding(5);
             table.addCell(cell1);
            table.addCell(cell2);
            table.addCell(cell3);
            table.addCell(cell4);
            table.addCell(cell5);
            table.addCell(cell6);
            table.addCell(cell7);
            table.addCell(cell8);
            table.addCell(cell9);
            table.addCell(cell10);
            table.addCell(cell11);
            table.addCell(cell12);

            // add table into document
            document.add(table);

            // Create new Page in PDF
            document.newPage();
            //Toast.makeText(this, "PDF File is Created.", Toast.LENGTH_LONG).show();
        }

      Here is my code getting image to imageview






protected void onActivityResult(int requestCode, int resultCode, Intent data) {
                super.onActivityResult(requestCode, resultCode, data);
                if (resultCode == this.RESULT_CANCELED) {

                    return;
                }
                if (requestCode == GALLERY && resultCode == RESULT_OK) {
                    if (data != null) {
                        Uri path = data.getData();
                        try {
                            bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), path);

                            imageView.setImageBitmap(bitmap);
                            imageView.setVisibility(View.VISIBLE);

                        } catch (IOException e) {
                            e.printStackTrace();
                            Toast.makeText(Work.this, "Failed!", Toast.LENGTH_SHORT).show();
                        }
                    }

                } 
      I'm also converting it to string for uploading it to database i don't know if it is useful for saving it in pdf




private String imageToString(Bitmap bitmap){
                ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
                bitmap.compress(Bitmap.CompressFormat.PNG,100,byteArrayOutputStream);
                byte[] imgBytes = byteArrayOutputStream.toByteArray();
                return Base64.encodeToString(imgBytes,Base64.DEFAULT);
            }

Answer 1

首先使用下面给出的代码从uri检索图像

private Image addImageToPdf(Uri uri) {
    Image image = null;
    try {
        Bitmap bitmap = MediaStore.Images.Media.getBitmap(activity.getContentResolver(), uri);
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
        image = Image.getInstance(stream.toByteArray());
    } catch (IOException e) {
        e.printStackTrace();
    } catch (BadElementException e) {
        e.printStackTrace();
    } finally {
        return image;
    }

}

现在进一步传递此图像以添加到PDF Cell

public PdfPCell createCellWithImage(Image content, int colspan, int rowspan, int border, int alignment) {
    PdfPCell cell = new PdfPCell(new Phrase("", font));
    cell.setPadding(10);
    cell.addElement(content);
    cell.setColspan(colspan);
    cell.setRowspan(rowspan);
    cell.setBorder(border);
    cell.setHorizontalAlignment(alignment);
    return cell;
}

在itextpdf中打印图像的问题

1 个答案: