title: How to save a PdfDocument object in to a file in android?
body: <p>In my app I have created a PDF document on button click event.And I have used Print Framework to print that document.All these are working fine.What i need is ,i want to save that pdf document to a folder in my phone storage.How to do this,I dont' know how to save this pdf to a file.Can nayone help me out?Thank's in advance.</p>
  
  <p>My code to generate a pdf</p>
  
  <pre><code>public class CustomPrintActivity extends Activity {
  
  
  
  
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.fragment_custom_print);
  }
  
  
  
  public void printDocument(View view)
  {
      PrintManager printManager = (PrintManager) this
              .getSystemService(Context.PRINT_SERVICE);
  
      String jobName = this.getString(R.string.app_name) +
              " Document";
  
      printManager.print(jobName, new MyPrintDocumentAdapter(this),
              null);
  }
  public class MyPrintDocumentAdapter extends PrintDocumentAdapter {
      Context context;
      private int pageHeight;
      private int pageWidth;
      public PdfDocument myPdfDocument;
      public int totalpages = 1;
  
  
      public MyPrintDocumentAdapter(Context context) {
          this.context = context;
      }
  
      @Override
      public void onLayout(PrintAttributes oldAttributes,
                           PrintAttributes newAttributes,
                           CancellationSignal cancellationSignal,
                           LayoutResultCallback callback,
                           Bundle metadata) {
  
  
          myPdfDocument = new PrintedPdfDocument(context, newAttributes);
  
          pageHeight =
                  newAttributes.getMediaSize().getHeightMils() / 1000 * 72;
          pageWidth =
                  newAttributes.getMediaSize().getWidthMils() / 1000 * 72;
  
          if (cancellationSignal.isCanceled()) {
              callback.onLayoutCancelled();
              return;
          }
  
          if (totalpages &gt; 0) {
              PrintDocumentInfo.Builder builder = new PrintDocumentInfo
                      .Builder("print_output.pdf")
                      .setContentType(PrintDocumentInfo.CONTENT_TYPE_DOCUMENT)
                      .setPageCount(totalpages);
  
              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 &lt; totalpages; i++) {
              if (pageInRange(pageRanges, i)) {
                  PdfDocument.PageInfo newPage = new PdfDocument.PageInfo.Builder(pageWidth,
                          pageHeight, i).create();
  
                  PdfDocument.Page page =
                          myPdfDocument.startPage(newPage);
  
                  if (cancellationSignal.isCanceled()) {
                      callback.onWriteCancelled();
                      myPdfDocument.close();
                      myPdfDocument = null;
                      return;
                  }
                  drawPage(page, i);
                  myPdfDocument.finishPage(page);
  
              }
          }
  
          try {
              myPdfDocument.writeTo(new FileOutputStream(
                      destination.getFileDescriptor()));
  
        /*   String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/cookbook";
  
              File dir = new File(path);
              if(!dir.exists())
                  dir.mkdirs();
  
              Log.d("PDFCreator", "PDF Path: " + path);
  
  
              File file = new File(dir, "recipe.pdf");
              FileOutputStream fOut = new FileOutputStream(file);
              myPdfDocument.writeTo(fOut);
  
              FileWriter fw = new FileWriter(file.getAbsoluteFile());
              BufferedWriter bw = new BufferedWriter(fw);
              bw.write(myPdfDocument);
              bw.close();*/
  
  
          } catch (IOException e) {
              callback.onWriteFailed(e.toString());
              return;
          } finally {
              myPdfDocument.close();
              myPdfDocument = null;
          }
  
          callback.onWriteFinished(pageRanges);
  
      }
  
      private boolean pageInRange(PageRange[] pageRanges, int page) {
          for (int i = 0; i &lt; pageRanges.length; i++) {
              if ((page &gt;= pageRanges[i].getStart()) &amp;&amp;
                      (page &lt;= pageRanges[i].getEnd()))
                  return true;
          }
          return false;
      }
  
      private void drawPage(PdfDocument.Page page,
                            int pagenumber) {
          Canvas canvas = page.getCanvas();
  
          pagenumber++; //
  
          int titleBaseLine = 90;
          int leftMargin = 50;
  
          /*Drawable icon = getResources().getDrawable(R.drawable.pot);
          icon.setBounds(leftMargin - 40, 40, 60, 80);
          icon.getIntrinsicHeight();
          icon.getIntrinsicWidth();
  
          icon.draw(canvas);*/
  
  
          Paint paint = new Paint();
          paint.setColor(Color.BLACK);
  
          paint.setTextSize(18);
          Typeface fontRegular = Typeface.createFromAsset(getAssets(), "Roboto-Regular.ttf");
  
          paint.setTypeface(fontRegular);
          canvas.drawText("PDF SAMPLE", leftMargin, titleBaseLine, paint);
          paint.setTextSize(14);
          canvas.drawText("PDF LINE NO 1", leftMargin, titleBaseLine + 30, paint);
  
          paint.setTextSize(12);
          canvas.drawText("PDF LINE NO 1", leftMargin, titleBaseLine + 50, paint);
  
          paint.setTextSize(14);
          canvas.drawText("PDF LINE NO 1", leftMargin, titleBaseLine + 80, paint);
  
          paint.setTextSize(12);
          canvas.drawText("PDF LINE NO 1", leftMargin, titleBaseLine + 100, paint);
  
  
      }
  }
  
  
  
  }
  </code></pre>
  
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