Question

使用带有iext pdf的Android Studio创建带有图像的表格的问题

我正在创建包括表格和图像的pdf文件。问题是我可以在第一页上看到图像，但在第二页上看不到页。

使用Android Studio 3.1.3和itextg-5.5.8

public void createPDF() throws IOException{

    EditText pdfREFNo=(EditText)findViewById(R.id.etReferenceNo);
    FileName = pdfREFNo.getText().toString()+".pdf";
    outpath = Environment.getExternalStorageDirectory() + "/PDF/";

    File docsFolder = new File(Environment.getExternalStorageDirectory() + "/PDF");
    boolean isPresent = true;
    if (!docsFolder.exists()) {
        isPresent = docsFolder.mkdir();
    }
    if (isPresent) {
        outpath = Environment.getExternalStorageDirectory() + "/PDF/";
    } else {
    }

    try {
        PdfWriter.getInstance(doc, new FileOutputStream(outpath+FileName));

        Document doc = new Document(PageSize.A4,20f,20f,50f,50f);
        Font fontHeader = new Font(FontFamily.HELVETICA, 11, Font.BOLD, new BaseColor(0, 0, 0));
        Font fontCell = new Font(FontFamily.HELVETICA, 10, Font.NORMAL, new BaseColor(0, 0, 0));
        Font fontCell_white = new Font(FontFamily.HELVETICA, 10, Font.NORMAL, new BaseColor(255, 255, 255));

        doc.open();

        PdfPTable table1 = new PdfPTable(8);
        table1.setWidthPercentage(100f);

        PdfPTable table_A = new PdfPTable(6);
        table_A.setWidthPercentage(100f);

        // convert image to byte array (arrTick)
        try {
            Drawable d = getResources().getDrawable(R.drawable.tick);
            Bitmap bitmap = ((BitmapDrawable)d).getBitmap();
            arrTick = BMP.getBytes(bitmap);

        } catch (Exception e) {
            e.printStackTrace();
        }

    //Creating Table 1
    insert_cell(table1,"Table 1 ",Element.ALIGN_LEFT,8,fontHeader,1 ,1, false, emptyArr, -1);

    insert_cell(table1, "Yes", Element.ALIGN_LEFT, 2, fontCell, 0 ,1, false, emptyArr, -1);
    insert_cell(table1, "No", Element.ALIGN_LEFT, 2, fontCell, 0 ,1, false, emptyArr, -1);
    insert_cell(table1, "Uncertain", Element.ALIGN_LEFT, 4, fontCell, 0 ,1, false, emptyArr, -1);

    if (cbYes.isChecked() == true) {
        insert_cell(table1, "", Element.ALIGN_CENTER, 2, fontCell, 0, 1, true, arrTick, 3);
    } else {
        insert_cell(table1, "", Element.ALIGN_CENTER, 2, fontCell_white, 0, 1, false, emptyArr, -1);
    }
    if (cbNo.isChecked() == true) {
        insert_cell(table1, "", Element.ALIGN_CENTER, 2, fontCell, 0, 1, true, arrTick, 3);
    } else {
        insert_cell(table1, "", Element.ALIGN_CENTER, 2, fontCell_white, 0, 1, false, emptyArr, -1);
    }
    if (cbUncertain.isChecked() == true) {
        insert_cell(table1, "", Element.ALIGN_CENTER, 4, fontCell, 0, 1, true, arrTick, 3);
    } else {
        insert_cell(table1, "", Element.ALIGN_CENTER, 4, fontCell_white, 0, 1, false, emptyArr, -1);
    }
    doc.add(table1);
    doc.newPage();

    insert_cell(table_A,"Remark",Element.ALIGN_LEFT,6,fontHeader,1 ,1, false, emptyArr, -1);
    insert_cell(table_A, etRemarks.getText().toString(), Element.ALIGN_LEFT, 6, fontCell, 0 ,1, false, emptyArr, -1);
    insert_cell(table_A," ",Element.ALIGN_LEFT,6,fontCell_white,0 ,0, false, emptyArr, -1);

    insert_cell(table_A,"table_A",Element.ALIGN_LEFT,6,fontHeader,1 ,1, false, emptyArr, -1);

    insert_cell(table_A, "Yes", Element.ALIGN_LEFT, 2, fontCell, 0 ,1, false, emptyArr, -1);
    insert_cell(table_A, "No", Element.ALIGN_LEFT, 2, fontCell, 0 ,1, false, emptyArr, -1);
    insert_cell(table_A, "Pending", Element.ALIGN_LEFT, 2, fontCell, 0 ,1, false, emptyArr, -1);

    if (cbYes2.isChecked()) {
        insert_cell(table_A, "", Element.ALIGN_CENTER, 2, fontCell, 0, 1, true, arrTick, 3);
    } else {
        insert_cell(table_A, "", Element.ALIGN_CENTER, 2, fontCell_white, 0, 1, false, emptyArr, -1);
    }

    if (cbNo2.isChecked()) {
        insert_cell(table_A, "", Element.ALIGN_CENTER, 2, fontCell, 0, 1, true, arrTick, 3);
    } else {
        insert_cell(table_A, "", Element.ALIGN_CENTER, 2, fontCell_white, 0, 1, false, emptyArr, -1);
    }

    if (cbUncertain.isChecked()) {
        insert_cell(table_A, "", Element.ALIGN_CENTER, 2, fontCell, 0, 1, true, arrTick, 3);
    } else {
        insert_cell(table_A, "", Element.ALIGN_CENTER, 2, fontCell_white, 0, 1, false, emptyArr, -1);
    }

    doc.add(table_A);
    doc.close();

    } catch (FileNotFoundException e)
    {
    e.printStackTrace();
    } catch (DocumentException e)
    {
    e.printStackTrace();
    }
}

private void insert_cell(PdfPTable table, String text, int align, int colspan, Font font, int background, int border, boolean signFlag, byte[] sign, int type) throws IOException, BadElementException {

    if(text.trim().equalsIgnoreCase("") == false && signFlag == false) {
        PdfPCell cell = new PdfPCell(new Phrase(text.trim(), font));
        cell.setHorizontalAlignment(align);
        cell.setColspan(colspan);
        cell.setPaddingLeft(5f);
        cell.setPaddingTop(3f);
        cell.setPaddingBottom(3f);
        cell.setPaddingRight(5f);

        if (background == 0) {
            cell.setBackgroundColor(BaseColor.WHITE);
        } else if (background == 1) {
            cell.setBackgroundColor(BaseColor.LIGHT_GRAY);
        } else if (background == 2) {
            cell.setBackgroundColor(BaseColor.BLACK);
        }else if (background == 3) {
            cell.setBackgroundColor(BaseColor.YELLOW);
        }

        if (border == 0) {
            cell.setBorder(PdfPCell.NO_BORDER);
        } else if (border == 1) {
            cell.setBorder(PdfPCell.BOX);
        }
        table.addCell(cell);
    }

// to add empty cell

    if (text.trim().equalsIgnoreCase("") == true && signFlag == false) {
        PdfPCell cell = new PdfPCell(new Phrase("-", font));
        cell.setHorizontalAlignment(align);
        cell.setColspan(colspan);
        cell.setPaddingLeft(5f);
        cell.setPaddingTop(3f);
        cell.setPaddingBottom(3f);
        cell.setPaddingRight(5f);

        if (background == 0) {
            cell.setBackgroundColor(BaseColor.WHITE);
        } else if (background == 1) {
            cell.setBackgroundColor(BaseColor.LIGHT_GRAY);
        } else if (background == 2) {
            cell.setBackgroundColor(BaseColor.BLACK);
        }else if (background == 3) {
            cell.setBackgroundColor(BaseColor.YELLOW);
        }

        if (border == 0) {
            cell.setBorder(PdfPCell.NO_BORDER);
        } else if (border == 1) {
            cell.setBorder(PdfPCell.BOX);
        }
        table.addCell(cell);
    }

// to add image

if(text.trim().equalsIgnoreCase("") ==true && signFlag == true && sign != null)
{
    Bitmap img1 = BMP.getImage(sign);
    Drawable d1 = new BitmapDrawable(img1);
    BitmapDrawable bitDw = ((BitmapDrawable) d1);
    Bitmap bmp = bitDw.getBitmap();
    ByteArrayOutputStream stream = new ByteArrayOutputStream();
    bmp.compress(Bitmap.CompressFormat.JPEG, 100, stream);
    Image image = Image.getInstance(stream.toByteArray());

    switch (type)
    {
    case 1:     // signature
    try{
        image.scaleAbsolute(150f,70f);
        PdfPCell cell = new PdfPCell();
        cell.setHorizontalAlignment(align);
        cell.setColspan(colspan);
        cell.addElement(image);
        table.addCell(cell);

    }catch (Exception e) {
        e.printStackTrace();
    }
    break;

    case 2:     // photo
    try{
        image.setRotationDegrees(270f);
        PdfPCell cell = new PdfPCell();
       cell.setHorizontalAlignment(align);
        cell.setColspan(colspan);
        cell.addElement(image);
        table.addCell(cell);

    }catch (Exception e) {
        e.printStackTrace();
    }
    break;

    case 3:     // tick
    try{
        image.scaleAbsolute(100f,18f);
        image.setAlignment(Element.ALIGN_CENTER);
        PdfPCell cell = new PdfPCell();
        cell.setHorizontalAlignment(align);
        cell.setColspan(colspan);
        cell.addElement(image);
        table.addCell(cell);
    }catch (Exception e) {
        e.printStackTrace();
    }
    break;
}
}

Error in table cell with image

我正在创建包括表格和图像的pdf文件。问题是我可以在第一页上看到图像，但在第二页上看不到页面。

Answer 1

通过使用Image.getInstance（字节[]符号）修复。

case 3:     // tick
    try{
        Image tick = Image.getInstance(sign);   // byte[] sign
        tick.scaleAbsolute(100f,18f);
        tick.setAlignment(Element.ALIGN_CENTER);
        PdfPCell cell = new PdfPCell();
        cell.setHorizontalAlignment(align);
        cell.setColspan(colspan);
        cell.addElement(tick);
        table.addCell(cell);
    }catch (Exception e) {
        e.printStackTrace();
    }
    break;

代替：

Bitmap img1 = BMP.getImage(sign);
Drawable d1 = new BitmapDrawable(img1);
BitmapDrawable bitDw = ((BitmapDrawable) d1);
Bitmap bmp = bitDw.getBitmap();
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.JPEG, 100, stream);
Image image = Image.getInstance(stream.toByteArray());

case 3:     // tick
    try{
        image.scaleAbsolute(100f,18f);
        image.setAlignment(Element.ALIGN_CENTER);
        PdfPCell cell = new PdfPCell();
        cell.setHorizontalAlignment(align);
        cell.setColspan(colspan);
        cell.addElement(image);
        table.addCell(cell);
    }catch (Exception e) {
        e.printStackTrace();
    }
    break;

固定的PDF：

Fixed PDF

使用带有iext pdf的Android Studio创建带有图像的表格时出现问题

使用带有iext pdf的Android Studio创建带有图像的表格的问题

1 个答案: