如何添加图片作为Android的PDFBox的页面 [英] how to add image as page in PDFBox Android

问题描述

我在我的Andr​​oid项目中添加 PDFBOX的Andr​​oid端口。

I have add PdfBox Android port in my android project.

我已经写了下面的code

I have wrote the following code

try
{
    PDDocument document = new PDDocument();
    PDPage page = new PDPage();
    // page.set
    document.addPage(page);

    // Create a new font object selecting one of the PDF base fonts
    PDFont font = PDType1Font.HELVETICA_BOLD;
    File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "myapp");
    File phone = new File(mediaStorageDir.getPath() + File.separator + "image.jpg");
    FileInputStream mInput = new FileInputStream(phone);   
             PDStream steam1 = new PDStream(document, mInput);
    PDResources resource1 = new PDResources();
    PDImageXObject img = new PDImageXObject(steam1, resource1);
    PDPageContentStream contentStream = new PDPageContentStream(
    document, page);
    contentStream.drawImage(img, 100, 100);
    contentStream.close();
    document.save("Hello World.pdf");
    document.close();
}
catch(Exception e)
{
}

当我执行一切顺利，直到下面的行

when I execute it goes well until following line

PDImageXObject img = new PDImageXObject(steam1, resource1);

我得到以下错误

java.io.IOException异常：空流未读

java.io.IOException: null stream was not read

如何解决呢？我想我失去了一些东西。请帮帮我！

how to solve it? I think I am missing something. please help me!

推荐答案

使用JPEGFactory，不PDImageXObject：

use the JPEGFactory, not PDImageXObject:

PDImageXObject img = JPEGFactory.createFromStream(document, mInput);

删除与PDResources和PDStream行。因此，你的code是这样的：

delete the lines with PDResources and with PDStream. Thus your code would look like this:

try
{
    PDDocument document = new PDDocument();
    PDPage page = new PDPage();
    // page.set
    document.addPage(page);

    // Create a new font object selecting one of the PDF base fonts
    PDFont font = PDType1Font.HELVETICA_BOLD;
    File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "myapp");
    File phone = new File(mediaStorageDir.getPath() + File.separator + "image.jpg");
    FileInputStream mInput = new FileInputStream(phone);   
    PDImageXObject img = JPEGFactory.createFromStream(document, mInput);
    PDPageContentStream contentStream = new PDPageContentStream(document, page);
    contentStream.drawImage(img, 100, 100);
    contentStream.close();
    document.save(mediaStorageDir.getPath() + File.separator + "Hello World.pdf");
    document.close();
}
catch(Exception e)
{
}

（这个答案只适用于Android版本）

(This answer applies only to the Android version)

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