lsCoding666
commented
1 year ago Soloved
int the onLayout method:
change
pdfiumCore.renderPageBitmap(pdf, cbitmap, pageNum, 0, 0, width, height);to
pdfiumCore.renderPageBitmap(pdf, cbitmap, pageNum, 0, 0, width, height,true);full code
public static void doPrint(File file) {
if (file.exists() && file.isFile()) {
//如果文件大小小于10kb 那么直接返回
if (file.length() < 1024 * 10) {
Toast.makeText(XUtil.getApplication().getApplicationContext(), "文件大小小于10kb 文件可能损坏", Toast.LENGTH_SHORT).show();
return;
}
// Get a PrintManager instance 获取打印驱动对象
PrintManager printManager = (PrintManager) ActivityUtil.getCurrentActivity().getSystemService(Context.PRINT_SERVICE);
// Set job name, which will be displayed in the print queue 设置作业名称，该名称将显示在打印队列中
String jobName = "深圳执法" + "文书";
// Start a print job, passing in a PrintDocumentAdapter implementation
// 启动打印作业，传入printdocumentadapter实现
// to handle the generation of a print document处理打印文档的生成
Toast.makeText(XUtil.getApplication().getApplicationContext(), "打印文件路径：" + file.getAbsolutePath(), Toast.LENGTH_SHORT).show();
try {
printManager.print(jobName, new MyPrintAdapter(ActivityUtil.getCurrentActivity(), file.getAbsolutePath()), new PrintAttributes.Builder().setMediaSize(PrintAttributes.MediaSize.ISO_A4).build());
} catch (Exception e) {
e.printStackTrace();
}
} else {
Toast.makeText(XUtil.getApplication().getApplicationContext(), "文件不存在", Toast.LENGTH_SHORT).show();
return;
}
}
//使用PdfDocument打印 pdf
/**
* Created by guocheng on 2017/6/13.
*/
public static class MyPrintAdapter extends PrintDocumentAdapter {
private Context context;
private int pageHeight;
private int pageWidth;
private PdfDocument mPdfDocument;
private int totalpages = 1;
private String pdfPath;
private List<Bitmap> mlist;
public MyPrintAdapter(Context context, String pdfPath) {
this.context = context;
this.pdfPath = pdfPath;
}
@Override
public void onLayout(PrintAttributes oldAttributes, PrintAttributes newAttributes, CancellationSignal cancellationSignal, LayoutResultCallback callback, Bundle metadata) {
mPdfDocument = new PrintedPdfDocument(context, newAttributes); //创建可打印PDF文档对象
pageHeight = newAttributes.getMediaSize().ISO_A4.getHeightMils() * 72 / 1000; //设置尺寸
pageWidth = newAttributes.getMediaSize().ISO_A4.getWidthMils() * 72 / 1000;
if (cancellationSignal.isCanceled()) {
callback.onLayoutCancelled();
return;
}
ParcelFileDescriptor mFileDescriptor = null;
PdfRenderer pdfRender = null;
PdfRenderer.Page page = null;
PdfiumCore pdfiumCore = new PdfiumCore(context);
try {
mlist = new ArrayList<>();
ParcelFileDescriptor parcelFileDescriptor = ParcelFileDescriptor.open(new File(pdfPath), ParcelFileDescriptor.MODE_READ_WRITE);
com.shockwave.pdfium.PdfDocument pdf = pdfiumCore.newDocument(parcelFileDescriptor);
pdfRender = new PdfRenderer(parcelFileDescriptor);
totalpages = pdfRender.getPageCount();
for (int pageNum = 0; pageNum < totalpages; pageNum++) {
// pdfiumCore.
pdfiumCore.openPage(pdf, pageNum);
int width = pdfiumCore.getPageWidth(pdf, pageNum);
int height = pdfiumCore.getPageHeight(pdf, pageNum);
Bitmap cbitmap = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
pdfiumCore.renderPageBitmap(pdf, cbitmap, pageNum, 0, 0, width, height,true);
pdfiumCore.closeDocument(pdf);
new File(Environment.getExternalStorageDirectory() + "/PDF Reader").mkdirs();
File outputFile = new File(Environment.getExternalStorageDirectory() + "/PDF Reader", System.currentTimeMillis() + "jpg");
FileOutputStream outputStream = new FileOutputStream(outputFile);
cbitmap.compress(Bitmap.CompressFormat.JPEG, 80, outputStream);
outputStream.close();
mlist.add(cbitmap);
}
} catch (IOException ex) {
ex.printStackTrace();
}
if (totalpages > 0) {
PrintDocumentInfo.Builder builder = new PrintDocumentInfo.Builder("快速入门.pdf").setContentType(PrintDocumentInfo.CONTENT_TYPE_DOCUMENT).setPageCount(totalpages); //构建文档配置信息
PrintDocumentInfo info = builder.build();
callback.onLayoutFinished(info, true);
} else {
callback.onLayoutFailed("Page count is zero.");
}
}
@Override
public void onWrite(final PageRange[] pageRanges, final ParcelFileDescriptor destination, final CancellationSignal cancellationSignal, final WriteResultCallback callback) {
for (int i = 0; i < totalpages; i++) {
if (pageInRange(pageRanges, i)) //保证页码正确
{
PdfDocument.PageInfo newPage = new PdfDocument.PageInfo.Builder(pageWidth, pageHeight, i).create();
PdfDocument.Page page = mPdfDocument.startPage(newPage); //创建新页面
if (cancellationSignal.isCanceled()) { //取消信号
callback.onWriteCancelled();
mPdfDocument.close();
mPdfDocument = null;
return;
}
drawPage(page, i); //将内容绘制到页面Canvas上
mPdfDocument.finishPage(page);
}
}
try {
mPdfDocument.writeTo(new FileOutputStream(destination.getFileDescriptor()));
} catch (IOException e) {
callback.onWriteFailed(e.toString());
return;
} finally {
mPdfDocument.close();
mPdfDocument = null;
}
callback.onWriteFinished(pageRanges);
}
private boolean pageInRange(PageRange[] pageRanges, int page) {
for (int i = 0; i < pageRanges.length; i++) {
if ((page >= pageRanges[i].getStart()) && (page <= pageRanges[i].getEnd()))
return true;
}
return false;
}
//页面绘制（渲染）
private void drawPage(PdfDocument.Page page, int pagenumber) {
Canvas canvas = page.getCanvas();
if (mlist != null) {
Paint paint = new Paint();
Bitmap bitmap = mlist.get(pagenumber);
int bitmapWidth = bitmap.getWidth();
int bitmapHeight = bitmap.getHeight();
// 计算缩放比例
float scale = (float) pageWidth / (float) bitmapWidth;
// 取得想要缩放的matrix参数
Matrix matrix = new Matrix();
matrix.postScale(scale, scale);
canvas.drawBitmap(bitmap, matrix, paint);
}
}
}
My solution: Use
pdfiumCoreconvert pdf to bitmap and combine bitmaps to PDF. pdf->pdfiumCore->images->pdf->print 用pdfiumCore把每一页输出为 bitmap,然后再把 bitmap组合成 pdf 然后再打印 本来我认为使用pdfiumCore的情况下生成的 pdf应该会有印章，但是实际上并没有，所以这个方法没有奏效。还有什么办法能让打印时的 pdf带上印章吗？ Originally, I thought that pdfs generated with pdfiumCore should have Seal, but they didn't, so this method didn't work. Is there any way to get the PDF stamped when printed?