Android自定义文件名为pdf文档在棒棒糖不工作

Question

我在Kitkat中使用以下代码来生成pdf文件。它是如何根据我给定的文本生成pdf文件名的。

，但在lollipop中，同一段代码不起作用。它的生成文件名"RepoDocument.pdf"其中Repo是我的应用程序名称

@Override
public void onLayout(PrintAttributes oldAttributes,
        PrintAttributes newAttributes,
        CancellationSignal cancellationSignal,
        LayoutResultCallback callback,
        Bundle metadata) 
   {
        // Create a new PdfDocument with the requested page attributes
        mPdfDocument = new PrintedPdfDocument(m_context, newAttributes);
        // Respond to cancellation request
        if (cancellationSignal.isCanceled() ) 
       {
         callback.onLayoutCancelled();
         return;
       }
      // Compute the expected number of printed pages
      int pages =  computePageCount(newAttributes);
      if (pages > 0) 
      {
         // Return print information to print framework
         PrintDocumentInfo info = new PrintDocumentInfo.Builder("mycustomname.pdf")
         .setContentType(PrintDocumentInfo.CONTENT_TYPE_DOCUMENT)
         .setPageCount(pages).build();
         // Content layout reflow is complete
         callback.onLayoutFinished(info, true);
       }  
      else 
      {
        // Otherwise report an error to the print framework
        callback.onLayoutFailed("Page count calculation failed.");
      }
  }

这个问题的原因是什么?如果你需要更多的输入，请告诉我

Answer 1

文件名可以在这里定义

private void doPrint() {
// Get a PrintManager instance
PrintManager printManager = (PrintManager) getActivity()
        .getSystemService(Context.PRINT_SERVICE);
// Set job name, which will be displayed in the print queue
String jobName = "DocumentName.pdf";
// Start a print job, passing in a PrintDocumentAdapter implementation
// to handle the generation of a print document
printManager.print(jobName, new MyPrintDocumentAdapter(getActivity()),
        null); //
}

Answer 2

我认为jobname不是文件名，因为它只用于命名打印作业。