问PDFDocument文件保存

EN

    PdfDocument document = new PdfDocument();

    PdfDocument.PageInfo pageinfo = new  PdfDocument.PageInfo.Builder(PAGEWIDTH,PAGEHEIGHT,1).create();


    PdfDocument.Page page = document.startPage(pageinfo);

    Canvas canvas = page.getCanvas();

    Paint paint = new Paint();


    paint.setTextSize(getResources().getDimension(R.dimen.textsize));
    paint.setTextAlign(Paint.Align.CENTER);

        paint.setColor(ContextCompat.getColor(getApplicationContext(),R.color.colorName));
    canvas.drawText(getResources().getString(R.string.app_name),PAGEWIDTH/2,50,paint);


    document.finishPage(page);


    String targetPdf = "/sdcard/documents/myfile.pdf";
    File filepath = new File(targetPdf);
    try {

    filepath.createNewFile();

    document.writeTo(new FileOutputStream(filepath));
    Toast.makeText(getApplicationContext(),
    getResources().getString(R.string.success),
    Toast.LENGTH_SHORT).show();


    }
    catch (IOException e){
    e.printStackTrace();
    Toast.makeText(getApplicationContext(),
    getResources().getString(R.string.error) + e.toString(),
    Toast.LENGTH_LONG).show();
    }

    document.close();