B4A Library aPOI - A wrapper for jPOI for Android - reading and writing XLS, XLSX on Android 5+

This is a wrap for this Github project which is itself a wrap for jPOI.

Reading and Writing XLSX on Android 5 Reading and Writing XLSX and XLS on Android 5 with Apache POI

It was quite a challenging task to use Apache POI on android with Dalvik VM. It is much easier to use Apache POI on Android 5+ with ART VM and Build Tools 21+

Please refer to https://github.com/andruhon/AndroidReadXLSX if you need to read XLSX on Android 4 with Dalvik VM.

#Contents I've repacked poi-ooxml to contain all dependencies in order to read and write XLSX (XLS as well, obviously) All javax classes from the STAX library and calls to them are renamed to aavax, to avoid --core-library warning and conflicts.

  • poi-3.12-android-a.jar //Repacked POI with all dependencies
  • poi-ooxml-schemas-3.12-20150511-a.jar //original schemas jar

Download the additional jars: HERE

aPOI
Author:
DonManfred
Version: 0.08
  • XLSSheet
    • Functions:
      • addHyperlink (hyperlink As org.apache.poi.xssf.usermodel.XSSFHyperlink)
      • addMergedRegion (region As org.apache.poi.ss.util.CellRangeAddress) As Int
      • addRelation (id As String, part As org.apache.poi.POIXMLDocumentPart)
      • addValidationData (dataValidation As org.apache.poi.ss.usermodel.DataValidation)
      • autoSizeColumn (column As Int)
      • autoSizeColumn2 (column As Int, useMergedCells As Boolean)
      • createComment As org.apache.poi.xssf.usermodel.XSSFComment
      • createDrawingPatriarch As org.apache.poi.xssf.usermodel.XSSFDrawing
      • createFreezePane (colSplit As Int, rowSplit As Int)
      • createPivotTable (source As org.apache.poi.ss.util.AreaReference, position As org.apache.poi.ss.util.CellReference) As org.apache.poi.xssf.usermodel.XSSFPivotTable
      • createPivotTable2 (source As org.apache.poi.ss.util.AreaReference, position As org.apache.poi.ss.util.CellReference, sourceSheet As org.apache.poi.ss.usermodel.Sheet) As org.apache.poi.xssf.usermodel.XSSFPivotTable
      • createRow (rownum As Int) As XSSFRow
      • createSplitPane (xSplitPos As Int, ySplitPos As Int, leftmostColumn As Int, topRow As Int, activePane As Int)
      • createTable As org.apache.poi.xssf.usermodel.XSSFTable
      • disableLocking
      • enableLocking
      • findEndOfRowOutlineGroup (row As Int) As Int
      • getCellComment (row As Int, column As Int) As org.apache.poi.xssf.usermodel.XSSFComment
      • getColumnOutlineLevel (columnIndex As Int) As Int
      • getColumnStyle (column As Int) As org.apache.poi.ss.usermodel.CellStyle
      • getColumnWidth (columnIndex As Int) As Int
      • getColumnWidthInPixels (columnIndex As Int) As Float
      • getHyperlink (row As Int, column As Int) As org.apache.poi.xssf.usermodel.XSSFHyperlink
      • getMargin (margin As Short) As Double
      • getMergedRegion (index As Int) As org.apache.poi.ss.util.CellRangeAddress
      • getRow (rownum As Int) As org.apache.poi.xssf.usermodel.XSSFRow
      • getSharedFormula (sid As Int) As org.openxmlformats.schemas.spreadsheetml.x2006.main.CTCellFormula
      • groupColumn (fromColumn As Int, toColumn As Int)
      • groupRow (fromRow As Int, toRow As Int)
      • hasComments As Boolean
      • isColumnBroken (column As Int) As Boolean
      • isColumnHidden (columnIndex As Int) As Boolean
      • IsInitialized As Boolean
      • isRowBroken (row As Int) As Boolean
      • isSelected As Boolean
      • iterator As java.util.Iterator
      • protectSheet (password As String)
      • removeArrayFormula (cell As org.apache.poi.ss.usermodel.Cell) As org.apache.poi.ss.usermodel.CellRange
      • removeColumnBreak (column As Int)
      • removeHyperlink (row As Int, column As Int)
      • removeMergedRegion (index As Int)
      • removeMergedRegions (indices As java.util.Set)
      • removeRow (row As org.apache.poi.ss.usermodel.Row)
      • removeRowBreak (row As Int)
      • rowIterator As java.util.Iterator
      • setArrayFormula (formula As String, range As org.apache.poi.ss.util.CellRangeAddress) As org.apache.poi.ss.usermodel.CellRange
      • setAutoFilter (range As org.apache.poi.ss.util.CellRangeAddress) As org.apache.poi.xssf.usermodel.XSSFAutoFilter
      • setCellComment (cellRef As String, comment As org.apache.poi.xssf.usermodel.XSSFComment)
      • setColumnGroupCollapsed (columnNumber As Int, collapsed As Boolean)
      • setColumnHidden (columnIndex As Int, hidden As Boolean)
      • setColumnWidth (columnIndex As Int, width As Int)
      • setDefaultColumnStyle (column As Int, style As org.apache.poi.ss.usermodel.CellStyle)
      • setMargin (margin As Short, size As Double)
      • setRowGroupCollapsed (rowIndex As Int, collapse As Boolean)
      • setSheetPassword (password As String, hashAlgo As org.apache.poi.poifs.crypt.HashAlgorithm)
      • SetZoom (scale As Int)
      • SetZoom2 (numerator As Int, denominator As Int)
      • shiftRows (startRow As Int, endRow As Int, n As Int, copyRowHeight As Boolean, resetOriginalRowHeight As Boolean)
      • shiftRows2 (startRow As Int, endRow As Int, n As Int)
      • showInPane (toprow As Int, leftcol As Int)
      • showInPane2 (toprow As Short, leftcol As Short)
      • ungroupColumn (fromColumn As Int, toColumn As Int)
      • ungroupRow (fromRow As Int, toRow As Int)
      • validateSheetPassword (password As String) As Boolean
    • Properties:
      • ActiveCell As String
      • Autobreaks As Boolean
      • ColumnBreak As Int [write only]
      • ColumnBreaks As Int() [read only]
      • CTWorksheet As org.openxmlformats.schemas.spreadsheetml.x2006.main.CTWorksheet [read only]
      • DataValidationHelper As org.apache.poi.ss.usermodel.DataValidationHelper [read only]
      • DataValidations As java.util.List [read only]
      • DefaultColumnWidth As Int
      • DefaultRowHeight As Short
      • DefaultRowHeightInPoints As Float
      • DisplayFormulas As Boolean
      • DisplayGridlines As Boolean
      • DisplayGuts As Boolean
      • DisplayRowColHeadings As Boolean
      • DisplayZeros As Boolean
      • DrawingPatriarch As org.apache.poi.xssf.usermodel.XSSFDrawing [read only]
      • EvenFooter As org.apache.poi.ss.usermodel.Footer [read only]
      • EvenHeader As org.apache.poi.ss.usermodel.Header [read only]
      • FirstFooter As org.apache.poi.ss.usermodel.Footer [read only]
      • FirstHeader As org.apache.poi.ss.usermodel.Header [read only]
      • FirstRowNum As Int [read only]
      • FitToPage As Boolean
      • Footer As org.apache.poi.ss.usermodel.Footer [read only]
      • ForceFormulaRecalculation As Boolean
      • Header As org.apache.poi.ss.usermodel.Header [read only]
      • HorizontallyCenter As Boolean
      • LastRowNum As Int [read only]
      • LeftCol As Short [read only]
      • lockAutoFilter As Boolean
      • lockDeleteColumns As Boolean
      • lockDeleteRows As Boolean
      • lockFormatCells As Boolean
      • lockFormatColumns As Boolean
      • lockFormatRows As Boolean
      • lockInsertColumns As Boolean
      • lockInsertHyperlinks As Boolean
      • lockInsertRows As Boolean
      • lockObjects As Boolean
      • lockPivotTables As Boolean
      • lockScenarios As Boolean
      • lockSelectLockedCells As Boolean
      • lockSelectUnlockedCells As Boolean
      • lockSort As Boolean
      • NumHyperlinks As Int [read only]
      • NumMergedRegions As Int [read only]
      • OddFooter As org.apache.poi.ss.usermodel.Footer [read only]
      • OddHeader As org.apache.poi.ss.usermodel.Header [read only]
      • PaneInformation As org.apache.poi.hssf.util.PaneInformation [read only]
      • PhysicalNumberOfRows As Int [read only]
      • PivotTables As java.util.List [read only]
      • PrintGridlines As Boolean
      • PrintSetup As org.apache.poi.xssf.usermodel.XSSFPrintSetup [read only]
      • Protect As Boolean [read only]
      • RepeatingColumns As org.apache.poi.ss.util.CellRangeAddress
      • RepeatingRows As org.apache.poi.ss.util.CellRangeAddress
      • RightToLeft As Boolean [write only]
      • RowBreak As Int [write only]
      • RowBreaks As Int() [read only]
      • RowSumsBelow As Boolean
      • RowSumsRight As Boolean
      • ScenarioProtect As Boolean [read only]
      • Selected As Boolean [write only]
      • SheetConditionalFormatting As org.apache.poi.xssf.usermodel.XSSFSheetConditionalFormatting [read only]
      • SheetLocked As Boolean [read only]
      • TabColor As Int [write only]
      • Tables As java.util.List [read only]
      • TopRow As Short [read only]
      • VerticallyCenter As Boolean
  • XSSFCell
    • Functions:
      • Initialize (cell As org.apache.poi.xssf.usermodel.XSSFCell)
      • IsInitialized As Boolean
      • isPartOfArrayFormulaGroup As Boolean
      • removeCellComment
      • removeHyperlink
      • setAsActiveCell
      • toString As String
    • Properties:
      • ArrayFormulaRange As org.apache.poi.ss.util.CellRangeAddress [read only]
      • BooleanCellValue As Boolean
      • CachedFormulaResultType As Int [read only]
      • CellComment As org.apache.poi.xssf.usermodel.XSSFComment
      • CellErrorValue As Byte [write only]
      • CellFormula As String
      • CellStyle As org.apache.poi.xssf.usermodel.XSSFCellStyle
      • CellType As Int
      • ColumnIndex As Int [read only]
      • CTCell As org.openxmlformats.schemas.spreadsheetml.x2006.main.CTCell
      • DateCellValue As Long
      • ErrorCellString As String [read only]
      • ErrorCellValue As Byte [read only]
      • Hyperlink As org.apache.poi.xssf.usermodel.XSSFHyperlink
      • NumericCellValue As Double
      • RawValue As String [read only]
      • Reference As String [read only]
      • RichStringCellValue As org.apache.poi.xssf.usermodel.XSSFRichTextString [read only]
      • RichTextStringCellValue As org.apache.poi.ss.usermodel.RichTextString [write only]
      • Row As org.apache.poi.xssf.usermodel.XSSFRow [read only]
      • RowIndex As Int [read only]
      • Sheet As org.apache.poi.xssf.usermodel.XSSFSheet [read only]
      • StringCellValue As String
  • XSSFRow
    • Functions:
      • compareTo (row As org.apache.poi.xssf.usermodel.XSSFRow) As Int
      • createCell (columnIndex As Int) As org.apache.poi.xssf.usermodel.XSSFCell
      • createCell2 (columnIndex As Int, type As Int) As org.apache.poi.xssf.usermodel.XSSFCell
      • getCell (cellnum As Int) As XSSFCell
      • isFormatted As Boolean
      • IsInitialized As Boolean
      • removeCell (cell As org.apache.poi.ss.usermodel.Cell)
      • toString As String
    • Properties:
      • CTRow As org.openxmlformats.schemas.spreadsheetml.x2006.main.CTRow [read only]
      • FirstCellNum As Short [read only]
      • Height As Short
      • HeightInPoints As Float
      • LastCellNum As Short [read only]
      • OutlineLevel As Int [read only]
      • PhysicalNumberOfCells As Int [read only]
      • RowNum As Int
      • RowStyle As org.apache.poi.xssf.usermodel.XSSFCellStyle
      • Sheet As org.apache.poi.xssf.usermodel.XSSFSheet [read only]
      • ZeroHeight As Boolean
  • XSSFWorkbook
    • Functions:
      • addPicture (arg0 As Byte(), arg1 As Int) As Int
      • addPicture2 (is As java.io.InputStream, format As Int) As Int
      • close
      • createCellStyle As org.apache.poi.xssf.usermodel.XSSFCellStyle
      • createDataFormat As org.apache.poi.xssf.usermodel.XSSFDataFormat
      • createFont As org.apache.poi.xssf.usermodel.XSSFFont
      • createName As org.apache.poi.xssf.usermodel.XSSFName
      • createSheet As org.apache.poi.xssf.usermodel.XSSFSheet
      • createSheet2 (name As String) As org.apache.poi.xssf.usermodel.XSSFSheet
      • getCellStyleAt (idx As Short) As org.apache.poi.xssf.usermodel.XSSFCellStyle
      • getFontAt (idx As Short) As org.apache.poi.xssf.usermodel.XSSFFont
      • getName (name As String) As org.apache.poi.xssf.usermodel.XSSFName
      • getNameAt (nameIndex As Int) As org.apache.poi.xssf.usermodel.XSSFName
      • getPrintArea (sheetIndex As Int) As String
      • getRelationById (id As String) As org.apache.poi.POIXMLDocumentPart
      • getRelationId (arg0 As org.apache.poi.POIXMLDocumentPart) As String
      • getSheet (sheet As String) As org.apache.poi.xssf.usermodel.XSSFSheet
      • getSheetAt (index As Int) As XLSSheet
      • getSheetIndex (sheet As String) As Int
      • getSheetIndex2 (sheet As org.apache.poi.ss.usermodel.Sheet) As Int
      • getSheetName (sheetIx As Int) As String
      • Initialize (EventName As String, filename As String)
      • Initialize2 (EventName As String)
      • isSheetHidden (sheetIx As Int) As Boolean
      • isSheetVeryHidden (sheetIx As Int) As Boolean
      • linkExternalWorkbook (name As String, workbook As org.apache.poi.ss.usermodel.Workbook) As Int
      • lockRevision
      • lockStructure
      • lockWindows
      • removeName (nameIndex As Int)
      • removeName2 (name As String)
      • removePrintArea (area As Int)
      • removeSheetAt (index As Int)
      • setPrintArea (sheetIndex As Int, startColumn As Int, endColumn As Int, startRow As Int, endRow As Int)
      • setPrintArea2 (arg0 As Int, arg1 As String)
      • setRepeatingRowsAndColumns (sheetIndex As Int, startColumn As Int, endColumn As Int, startRow As Int, endRow As Int)
      • setRevisionsPassword (password As String, hashAlgo As org.apache.poi.poifs.crypt.HashAlgorithm)
      • setSheetName (sheetIndex As Int, sheetname As String)
      • unLock
      • unLockRevision
      • unLockStructure
      • unLockWindows
      • write (outputstream As java.io_OutputStream)
    • Properties:
      • ActiveSheet As Int [write only]
      • ActiveSheetIndex As Int [read only]
      • AllEmbedds As java.util.List [read only]
      • AllPictures As java.util.List [read only]
      • CalculationChain As org.apache.poi.xssf.model.CalculationChain [read only]
      • CreationHelper As org.apache.poi.xssf.usermodel.XSSFCreationHelper [read only]
      • CTWorkbook As org.openxmlformats.schemas.spreadsheetml.x2006.main.CTWorkbook [read only]
      • CustomXMLMappings As java.util.Collection [read only]
      • ExternalLinksTable As java.util.List [read only]
      • FirstVisibleTab As Int
      • ForceFormulaRecalculation As Boolean
      • Hidden As Boolean
      • iterator As java.util.Iterator [read only]
      • MacroEnabled As Boolean [read only]
      • MapInfo As org.apache.poi.xssf.model.MapInfo [read only]
      • MissingCellPolicy As org.apache.poi.ss.usermodel.Row.MissingCellPolicy
      • NumberOfFonts As Short [read only]
      • NumberOfNames As Int [read only]
      • NumberOfSheets As Int [read only]
      • NumCellStyles As Short [read only]
      • Package As org.apache.poi.openxml4j.opc.OPCPackage [read only]
      • PackagePart As org.apache.poi.openxml4j.opc.PackagePart [read only]
      • PackageRelationship As org.apache.poi.openxml4j.opc.PackageRelationship [read only]
      • Parent As org.apache.poi.POIXMLDocumentPart [read only]
      • PivotTables As java.util.List [read only]
      • Properties As org.apache.poi.POIXMLProperties [read only]
      • Relations As java.util.List [read only]
      • RevisionLocked As Boolean [read only]
      • SharedStringSource As org.apache.poi.xssf.model.SharedStringsTable [read only]
      • StructureLocked As Boolean [read only]
      • StylesSource As org.apache.poi.xssf.model.StylesTable [read only]
      • Theme As org.apache.poi.xssf.model.ThemesTable [read only]
      • WindowsLocked As Boolean [read only]

Example code:
B4X:
    File.Copy(File.DirAssets,"book1.xlsx",File.DirInternal,"book1.xlsx")
    xls.Initialize("",File.Combine(File.DirInternal,"book1.xlsx"))
    Log($"ActiveSheetIndex=${xls.ActiveSheetIndex}"$)
    Dim sheet As XLSSheet = xls.getSheetAt(xls.ActiveSheetIndex)
    Log($"ActiveSheet.ActiveCell=${sheet.ActiveCell}"$)
    Log($"ActiveSheet.hasComments=${sheet.hasComments}"$)
    Dim firstrow As Int = sheet.FirstRowNum
    Dim lastrow As Int = sheet.LastRowNum
    Log($"Row FirstRow=${firstrow}, LastRow=${lastrow}"$)
    For i= firstrow To lastrow
        Dim row As XSSFRow =sheet.getRow(i)
        'Log(row)
        Dim firstcell As Int = row.FirstCellNum
        Dim lastcell As Int = row.LastCellNum
        Log($"Row #${i} FirstCell=${row.FirstCellNum}, LastCell=${row.LastCellNum}"$)
'        If i = 1 Then
'            Dim cell As XSSFCell =row.getCell(13)
'            cell.StringCellValue = "Test.pdf"
'        End If
        For o= firstcell To lastcell-1
            Dim cell As XSSFCell =row.getCell(o)
            Log($"Cell #${o}"$)
            'Log(cell.IsInitialized)
            If cell.IsInitialized Then
                Log($"CellValueType=${cell.CellType}"$)
                'Log("Raw:"&cell.RawValue)
                If cell.CellType = 1 Then
                    Log(cell.StringCellValue)
                else if cell.CellType = 0 Then
                    Log(cell.NumericCellValue)
                End If
            '    Log(cell)
            End If
            'Log(row)

        Next
    Next


    Dim row As XSSFRow = sheet.createRow(30)
    Dim cell As XSSFCell =row.createCell(0)
    cell.NumericCellValue = 29
    Dim cell As XSSFCell =row.createCell(1)
    cell.StringCellValue = "Erel Rocks"
    Dim cell As XSSFCell =row.createCell(2)
    cell.StringCellValue = "B4X :-)"
    Dim cell As XSSFCell =row.createCell(3)
    cell.NumericCellValue = 99
    Dim cell As XSSFCell =row.createCell(4)
    cell.NumericCellValue = 2019
    Dim cell As XSSFCell =row.createCell(5)
    cell.StringCellValue = "aPOI"
    Dim cell As XSSFCell =row.createCell(6)
    cell.NumericCellValue = 9.9

    Starter.rp.CheckAndRequest(Starter.rp.PERMISSION_WRITE_EXTERNAL_STORAGE)
    wait for Activity_PermissionResult (Permission As String, Result As Boolean)
    If Result Then
        Dim outstream As OutputStream = File.OpenOutput(File.DirRootExternal,"excelout.xlsx",False)
        xls.write(outstream)
        outstream.Close
    End If

Note that the b4a wrap is far from being complete! Only a few Objects are wrapped as yet.
The Sheet, SheetRows and SheetColumns.

i guess there are hundrets of Objects missing.
For simple reading and writing it should work. I hope :D
 

Attachments

  • aPOIExample.zip
    17.6 KB · Views: 427
  • aPOIV0.01.zip
    16.5 KB · Views: 344
  • aPOIV0.08.zip
    23.4 KB · Views: 330
  • aPOIV0.11.zip
    24.6 KB · Views: 392
Last edited:

Cableguy

Expert
Licensed User
Longtime User
Hi Don,

Can an existing workbook be edited using this lib? Would there be some unwanted side effects, like loosing format, etc?
 

DonManfred

Expert
Licensed User
Longtime User
Can an existing workbook be edited using this lib?
Honestly?
I don´t know whether i tested it or not. Need to investigate.
 

DonManfred

Expert
Licensed User
Longtime User
Honestly?
I don´t know whether i tested it or not.
LOL. I DID; See #1! ;)
B4X:
    Dim row As XSSFRow = sheet.createRow(30)
    Dim cell As XSSFCell =row.createCell(0)
    cell.NumericCellValue = 29
    Dim cell As XSSFCell =row.createCell(1)
    cell.StringCellValue = "Erel Rocks"
    Dim cell As XSSFCell =row.createCell(2)
    cell.StringCellValue = "B4X :-)"
    Dim cell As XSSFCell =row.createCell(3)
    cell.NumericCellValue = 99
    Dim cell As XSSFCell =row.createCell(4)
    cell.NumericCellValue = 2019
    Dim cell As XSSFCell =row.createCell(5)
    cell.StringCellValue = "aPOI"
    Dim cell As XSSFCell =row.createCell(6)
    cell.NumericCellValue = 9.9
I am adding a new row in the provided book1.xlsx
 
Last edited:

Cableguy

Expert
Licensed User
Longtime User
I'll be playing around with this one sometime during this week!
 

DonManfred

Expert
Licensed User
Longtime User
as you are asking i did checked the library.
You can set and get a CellStyle from/to a cell but there is no wrapper for CellStyle as of now.

You need to use Javaobject in the meantime.

But i´ll see if i can create some more Objectwrappers this weekend...
 

DonManfred

Expert
Licensed User
Longtime User
But i´ll see if i can create some more Objectwrappers this weekend...
I´ve created classes for the Style but i stuck at defining Colors. POIs colors depends on AWT which is not available on Android.
The wrapped jar needs SHORT values for the colors though. Androids color ints seems not compatible.
 

paragkini

Member
Licensed User
Longtime User
This works well for normal cells (used only cell reading and writing). But for formula cells, if any value is changed in dependent cells, cell value was not recalculated. Tried a lot and found a solution given by Erel 2.5 year back. Tried the same and it worked very well.
Sharing a this link of the solution for people who want to refresh value of a formula cell.

Thanks again. Code also given below.

B4X:
Dim jo As JavaObject = Workbook1
Dim evaluator As JavaObject = jo.RunMethodJO("getCreationHelper", Null).RunMethodJO("createFormulaEvaluator", Null)
'now use evaluator whenever you want to evaluate a cell:
Log(evaluator.RunMethodJO("evaluate", Array(Cell1)).RunMethod("formatAsString", Null))
 

DonManfred

Expert
Licensed User
Longtime User
This works well for normal cells (used only cell reading and writing). But for formula cells, if any value is changed in dependent cells, cell value was not recalculated. Tried a lot and found a solution given by Erel 2.5 year back. Tried the same and it worked very well.
Sharing a this link of the solution for people who want to refresh value of a formula cell.

I´ve update the Library (0.08)

B4X:
    Dim chlp As XSSFCreationHelper = xls.CreationHelper
    Dim eval As XSSFFormulaEvaluator = chlp.createFormulaEvaluator
    Dim row As XSSFRow = sheet.createRow(newrowidx)
    Dim cell As XSSFCell =row.createCell(0)
    DateTime.DateFormat = "dd.MM.yyyy"
    cell.StringCellValue =  DateTime.Date(DateTime.Now)
    Dim cell As XSSFCell =row.createCell(1)
    cell.StringCellValue = "Testentry"
    Dim cell As XSSFCell =row.createCell(2)
    cell.CellType = 2
    cell.CellFormula = $"D${newrowidx}*0.25"$
    Dim evaluatedcell As XSSFCell = eval.evaluate(cell) ' you can just evaluate a Cell and get the evaluated Cell back

    Dim cell As XSSFCell =row.createCell(3)
    cell.CellType = 0
    cell.NumericCellValue = 10

    eval.evaluateAll ' Alternatively you can Evaluate all
 
Last edited:

paragkini

Member
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Longtime User
I´ve update the Library (0.08)

B4X:
    Dim chlp As XSSFCreationHelper = xls.CreationHelper
    Dim eval As XSSFFormulaEvaluator = chlp.createFormulaEvaluator
    Dim row As XSSFRow = sheet.createRow(newrowidx)
    Dim cell As XSSFCell =row.createCell(0)
    DateTime.DateFormat = "dd.MM.yyyy"
    cell.StringCellValue =  DateTime.Date(DateTime.Now)
    Dim cell As XSSFCell =row.createCell(1)
    cell.StringCellValue = "Testentry"
    Dim cell As XSSFCell =row.createCell(2)
    cell.CellType = 2
    cell.CellFormula = $"D${newrowidx}*0.25"$
    Dim evaluatedcell As XSSFCell = eval.evaluate(cell) ' you can just evaluate a Cell and get the evaluated Cell back

    Dim cell As XSSFCell =row.createCell(3)
    cell.CellType = 0
    cell.NumericCellValue = 10

    eval.evaluateAll ' Alternatively you can Evaluate all


That’s just great... thanks.
 

kgcarpenter

Member
Licensed User
Hi Don,

Can an existing workbook be edited using this lib? Would there be some unwanted side effects, like loosing format, etc?
I can confirm that existing workbooks can be edited. One key thing to note though:
B4X:
    Dim cell As XSSFCell =row.createCell(1)
    cell.StringCellValue = "Testentry"
Will remove all cell formatting for that particular cell in the workbook.

If you wish to keep the existing formatting but only change cell contents (i.e add text) then use:
B4X:
    Dim cell As XSSFCell =row.getCell(1)
    cell.StringCellValue = "Testentry"
 

kgcarpenter

Member
Licensed User
@DonManfred Is the ability to add pictures onto a sheet in the pipeline?
I've played around with xls.AddPictures and from what I can tell this loads the picture to the workbook, with another method required to add the picture to a location on the sheet?


 
Last edited:

pesfronau

New Member
Licensed User
Longtime User
Where can i find list of Cell.CellType integer values?
0 Numeric
1 String
2 Formula
....
 

DAKTECXXL

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Hola, no funciona evalúa, cuando la tabla está en otra hoja

Fórmula = + Tabla24 [[# Esta fila], [H.MONTAJE]] + Tabla24 [[# Esta fila], [H.DIRECTO]] + Tabla24 [[# Esta fila], [H.VIAJE]] + Tabla24 [ [#Esta fila], [H.NAVE]] + Tabla24 [[# Esta fila], [H. CONDUCCIÓN]]

org.apache.poi.ss.formula.FormulaParseException: El rango con nombre especificado 'Tabla24' no existe en el libro de trabajo actual.

Disculpa mi inglés.

B4X:
Dim chlp As XSSFCreationHelper = xls.CreationHelper

        Dim eval As XSSFFormulaEvaluator = chlp.createFormulaEvaluator

        Atenuar la celda evalúa como XSSFCell = .evaluate (row.getCell (12))

También intento con ...

B4X:
 Dim jo como JavaObject = xls

        Dim evaluator As JavaObject = jo.RunMethodJO ("getCreationHelper", Null) .RunMethodJO ("createFormulaEvaluator", Null)   

        Log ("EVALUATOR =" & evaluator.RunMethodJO ("evaluar", Array (row.getCell (12))). RunMethod ("formatAsString", Null))

Mismo resultado, en b4j si me funciona
 
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