java 如何在android中将位图转换为PDF格式
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How I can convert a bitmap into PDF format in android
提问by Varun Singh
**I have bitmap in "thepic" variable which is of Bitmap type..
**我在“thepic”变量中有位图，它是位图类型..
imageUri = (Uri) intent.getParcelableExtra(Intent.EXTRA_STREAM);
String realpath=getRealPathFromURI(imageUri);
thepic = BitmapFactory.decodeFile(realpath);**
采纳答案by Mehul Ranpara
you can do by this way...you have to download itextpdf-5.3.2.jarfile and attach in your project..
你可以这样做...你必须下载itextpdf-5.3.2.jar文件并附加到你的项目中..
public class WritePdfActivity extends Activity
{
private static String FILE = "mnt/sdcard/FirstPdf.pdf";
static Image image;
static ImageView img;
Bitmap bmp;
static Bitmap bt;
static byte[] bArray;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
img=(ImageView)findViewById(R.id.imageView1);
try
{
Document document = new Document();
PdfWriter.getInstance(document, new FileOutputStream(FILE));
document.open();
addImage(document);
document.close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
private static void addImage(Document document)
{
try
{
image = Image.getInstance(bArray); ///Here i set byte array..you can do bitmap to byte array and set in image...
}
catch (BadElementException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (MalformedURLException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
// image.scaleAbsolute(150f, 150f);
try
{
document.add(image);
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
回答by Gabe Sechan
You need to use a 3rd party library, there's no built in ability. I know a few libraries that do the reverse (Qoppa, PDFTron, Reade) but they all cost a lot of money. I've heard iText works well for writing to bitmaps, but haven't used it myself.
您需要使用第 3 方库，没有内置功能。我知道一些相反的库（Qoppa、PDFTron、Reade），但它们都花了很多钱。我听说 iText 可以很好地写入位图，但我自己没有使用过。
回答by Rahil2952
I haven't tried this but looking on stackoverflow I am giving you answer.
我没有试过这个，但在 stackoverflow 上我给你答案。
So you check both answers study them and see whether it hepls you or not.
所以你检查两个答案研究它们，看看它是否对你有帮助。
