I want to create multiple page pdf from Android listview. I have successfully achieved converting all the listview items into pdf even if they are not all visible using itextg. The problem I faced is that if the items in the listview or the captured image of the listview exceeds the length of the page in the pdf it cuts the the rest of the items.
I want to create a multiple page pdf if the first page is full then write the rest of the image part in the second image.
This is the code which creates the pdf by capturing all the listview item:
//method which generate pdf of the attendance data
private void save_as_pdf() {
//First Check if the external storage is writable
String state = Environment.getExternalStorageState();
if (!Environment.MEDIA_MOUNTED.equals(state)) {
// Toast.makeText(context,"")
}
//Create a directory for your PDF
final File pdfDir = new File(Environment.getExternalStorageDirectory() + "/Documents", "attendance_report");
if (!pdfDir.exists()) {
pdfDir.mkdir();
}
//take screen shoot of the entire listview of the attendance report
ListView listview = studentlist;
ListAdapter adapter = listview.getAdapter();
int itemscount = adapter.getCount();
int allitemsheight = 0;
List<Bitmap> bmps = new ArrayList<Bitmap>();
for (int i = 0; i < itemscount; i++) {
View childView = adapter.getView(i, null, listview);
childView.measure(
View.MeasureSpec.makeMeasureSpec(listview.getWidth(), View.MeasureSpec.EXACTLY),
View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
childView.layout(0, 0, childView.getMeasuredWidth(), childView.getMeasuredHeight());
childView.setDrawingCacheEnabled(true);
childView.buildDrawingCache();
bmps.add(childView.getDrawingCache());
allitemsheight += childView.getMeasuredHeight();
}
Bitmap bigbitmap = Bitmap.createBitmap(listview.getMeasuredWidth(), allitemsheight,
Bitmap.Config.ARGB_8888);
Canvas bigcanvas = new Canvas(bigbitmap);
bigcanvas.drawColor(getResources().getColor(R.color.white));
Paint paint = new Paint();
int iHeight = 0;
for (int i = 0; i < bmps.size(); i++) {
Bitmap bmp = bmps.get(i);
bigcanvas.drawBitmap(bmp, 0, iHeight, paint);
iHeight += bmp.getHeight();
bmp.recycle();
bmp = null;
}
//Now create the name of your PDF file that you will generate
File pdfFile = new File(pdfDir, "report_for( " + course + "," + semister + section + "," + date + ").pdf");
try {
com.itextpdf.text.Document document = new com.itextpdf.text.Document();
PdfWriter.getInstance(document, new FileOutputStream(pdfFile));
document.addTitle("Attendance Report Generated For course:" + course + " Semester:" + semister + " Section:" + section + " Date:" + date);
document.addHeader("Header", "Department Of Information Science");
document.addCreator("Department Of Information Science");
document.addCreationDate();
document.bottomMargin();
document.setPageCount(3);
document.open();
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bigbitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
addImage(document, byteArray);
document.close();
} catch (Exception e) {
e.printStackTrace();
}
}
private void addImage(com.itextpdf.text.Document document, byte[] byteArray) {
Image image = null;
try {
image = Image.getInstance(byteArray);
} 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();
}
}
