How to put table in proper way with itextpdf in android? - sqlite

Question

I want to export my Sqlite to a PDF. I am able to do it but instead of putting the result in just one row, it puts the the result in the other column i have. What I want is to fill the row in the same column(incremente the rows)with the database results. This is what I have, Can you help me with this?
db = new Database(FirstActivity.this);
Cursor c = bd.getGroupsNamesMachines();
PdfPTable table = new PdfPTable(2);
cell = new PdfPCell(new Phrase("groups"));
cell2 = new PdfPCell(new Phrase("machines"));
if (c.moveToFirst()) {
do {
String groups = c.getString(c.getColumnIndex("groupname"));
cell3 = new PdfPCell(new Phrase(groups));
table.addCell(cell3);
} while (c.moveToNext());
}
cell.setColspan(1);
cell2.setColspan(2);
cell3.setColspan(1);
table.addCell(cell);
table.addCell(cell2);
table.addCell(cell3);

Answer 1

Please read the documentation, or watch this video (before the first 10 minutes are over, you'll know how to create a table that shows all the states of the US). The code for that example can be found here: set format of header row using iText
In your case, you are doing something really strange. You create a table with 2 columns. That's OK if each record has two fields. However, you add the body cells before you add the header cells. I think you're trying to create a header row with 3 columns (which is illogical), and you probably don't complete the last row (and iText only adds complete rows by default).
You need something like this:
// Table
PdfPTable table = new PdfPTable(2);
// Header
PdfPCell cell1 = new PdfPCell(new Phrase("groups"));
PdfPCell cell2 = new PdfPCell(new Phrase("machines"));
table.addCell(cell1);
table.addCell(cell2);
// Data
db = new Database(FirstActivity.this);
Cursor c = db.getGroupsNamesMachines();
if (c.moveToFirst()) {
do {
String group = c.getString(c.getColumnIndex("groupname"));
cell1 = new PdfPCell(new Phrase(group));
table.addCell(cell1);
String machine = c.getString(c.getColumnIndex("machinename"));
cell2 = new PdfPCell(new Phrase(machine));
table.addCell(cell2);
} while (c.moveToNext());
}
document.add(table);
I don't know if the database code is OK; it's your responsibility to know how to get the correct data from the database, but please compare your very asymmetric code with the logical code I changed it into.
First define the header, and add it to the table,
Then loop over the data, and add the data row by row,
Never add more cells to a row than there are columns!