B4J Library [B4X] [XUI] SD FlexGrid (Table)

I created a new library to show a table (or grid) similar to the one in EXCEL.

There are already excellent classes that allow many to accomplish things, such as xCustomListView by @Erel (B4X) and with the FlexibleTable by @klaus (B4A). I wanted to make something slightly different suited to my needs.

WARNING
The use of libraries for personal and / or commercial use is permitted. It is not allowed to modify the sources or change the name of the library. Reverse engineering is not authorized to access the sources for any reason, not even for study or learning reasons.

Explanations:
  1. To get the calculation of the cells that contain a formula I have added Erel's B4XEval to my Library, but as soon as possible I will make it external so that everyone can modify it according to their needs.
  2. To select multiple cells, position yourself on the first cell of those to be selected (the one at the top left) click a shot and then click again and drag your finger to cover all the cells (or area) that you want to select
  3. It is still in beta version, presents problems in large grids.
  4. Now only for B4A and B4i Now for B4A,B4i,B4j
  5. In the example to select a group of cells just long click on a cell (not checkbox). In the case of B4J click with the right mouse button

SD_FlexGrid

Author: Star-Dust
Version: 0.46
  • Eval
    version 2.00
    Eval Method By Erel: https://www.b4x.com/android/forum/threads/b4x-eval-expressions-evaluator.54629/
    • Fields:
      • Error As Boolean
    • Functions:
      • Calculate (Expression As String) As Double
      • Class_Globals As String
      • Initialize (FG As FlexGrid) As String
      • IsInitialized As Boolean
        Verifica se l'oggetto sia stato inizializzato.
  • FlexGrid
    • Events:
      • CellClick (Row As Int, Col As Int)
      • CellLongClick (Row As Int, Col As Int)
      • FeetClick (Index As Int)
      • HeadClick (Index As Int)
      • Modified (Row As Int, Col As Int)
      • ScrollX (Position As Double)
      • ScrollY (Position As Double)
    • Fields:
      • EditBackgroundColor As Int
      • EditTextColor As Int
      • TypeButton As Int
      • TypeCheck As Int
      • TypeDouble As Int
      • TypeFloat As Int
      • TypeImage As Int
      • TypeInt As Int
      • TypeList As Int
      • TypeString As Int
    • Functions:
      • AddRow (Cell As Object(), Refresh As Boolean) As String
        eg. Flexgrid.AddRow(Array As Object(i,B,"User ","Description " ,100.00), True)
      • AddRow2 (Cell As Object(), HeightRow As Int, Refresh As Boolean) As String
        eg. Flexgrid.AddRow(Array As Object(i,B,"User ","Description " ,100.00),40dip,True)
      • AddRowAt (index As Int, Cell As Object(), Refresh As Boolean) As String
        eg. Flexgrid.AddRow(2,Array As Object(i,B,"User ","Description " ,100.00), True)
      • AddRowCustomize (Cell As Object(), Text_Color As Int, Background_Color As Int, TextFont As B4XFont, Refresh As Boolean) As String
      • AddToParent (Parent As B4XView, Left As Int, Top As Int, Width As Int, Height As Int, ColsNumber As Int) As String
        Parent is Panel to Add Grid
        eg. Flexgrid.AddToParent(Activity,0,0,100%x,100%y,5)
      • Class_Globals As String
      • ClearRows As String
        erase all rows contents
      • ClearSelection As String
        cell no longer be selected.
      • DesignerCreateView (Base As Object, Lbl As Label, Props As Map) As String
        Base type must be Object
      • EditCell (Row As Int, Col As Int) As String
        eg. Flexgrid.EditCell(1,1)
      • EditCellOnSite (Row As Int, Col As Int) As String
        eg. Flexgrid.EditCell(1,1)
      • GetCellBackgroundColor (Row As Int, Col As Int) As Int
      • GetCellCol (Col As Int) As Object()
        eg. Dim S() as String = Flexgrid.GetCellCol(1)
        eg. Dim B() as Boolean = Flexgrid.GetCellCol(2)
      • GetCellRow (Row As Int) As Object()
        eg Dim Row() as Object = Flexgrid.GetCellRow(1)
      • GetCellTextColor (Row As Int, Col As Int) As Int
      • GetCellTextFont (Row As Int, Col As Int) As B4XFont
      • GetCellValue (Row As Int, Col As Int) As Object
        eg. Dim I as int = Flexgrid.GetCellValue(1,1)
        eg. Dim S as String = FlexGrid.GetCellValue(2,2)
      • GetTypeCol (Col As Int) As Int
        eg. If Flexgrid.GetTypeCol(1)=Flexgrid.TypeInt Then .....
      • Initialize (Callback As Object, EventName As String) As String
      • Invalidate As String
      • IsInitialized As Boolean
        Verifica se l'oggetto sia stato inizializzato.
      • RemoveRow (Row As Int) As String
        Row (0...n-1)
        eg. Flexgrid.RemoveRow(1)
      • ResetCustomizeCell (Col As Int, Row As Int) As String
        eg. Flexgrid.ResetCustomizeCell(1,1)
      • SearchInColumn (Text As String, Col As Int, FromRow As Int, exactly As Boolean, IgnoreCap As Boolean) As Int
        Search for text in the indicated column starting from the start row.
        If the start row is 0 it will check the entire column.
        It will return the position of the line containing the text
        <code>Dim Col As Int = 5
        Dim Row As Int = FlexGied1.SearchInColumn("My text",Col,0, False, True)
        if Row>-1 then Log("Find in row " & Row) Else log("Don't find")
        </code>
      • SearchInColumn2 (Text As String, Col As Int, FromRow As Int, exactly As Boolean, IgnoreCap As Boolean) As List
        Search for text in the indicated column starting from the start row.
        If the start row is 0 it will check the entire column.
        It will return the list of position of the line containing the text
        <code>Dim Col As Int = 5
        Dim IndexFinded As List = FlexGied1.SearchInColumn2("My text",Col,0, False, True)
        if IndexFinded.Size>0 then Log("Find in row " & Row) Else log("Don't find")
        </code>
      • SelectCell (Row As Int, Col As Int, Mobile As Boolean) As String
        eg. Flexgrid.SelectCell(1,1,True)
        If Mobile is True, the selectable area can be enlarged by touching and dragging it to the desired box.
      • SelectCells (FromRow As Int, FromCol As Int, ToRow As Int, ToCol As Int, Mobile As Boolean) As String
        eg. Flexgrid.SelectCell(1,1,5,4,True)
        If Mobile is True, the selectable area can be enlarged by touching and dragging it to the desired box.
      • SelectCol (Col As Int) As String
        eg. Flexgrid.SelectCol(1)
      • SelectRow (Row As Int) As String
        eg. Flexgrid.SelectRow(1)
      • SetCellCustomize (Row As Int, Col As Int, Text_Color As Int, Background_Color As Int, TextFont As B4XFont) As String
        eg. Flexgrid.SetCellCustomize(1,1,XUI.Color_Black,XUI.Color_White,XUi.CreateDefaultFont(12))
      • SetCellListIndex (Row As Int, Col As Int, Index As Int) As String
      • SetCellValue (Row As Int, Col As Int, Value As Object) As String
        eg. Flexgrid.SetCellValue(1,1,True)
        eg. Flexgrid.SetCellValue(2,2,"OK")
        eg. Flexgrid.SetCellValue(3,3,3)
        eg. Flexgrid.SetCellValue(Row,Col,"A,B,C,D,E") for TypeList
      • SetColAlignment (ColumnIndex As Int, Alignment As String) As String
        Index (0..n-1)
        eg. SetColAlignment(0,"CENTER")
      • SetColCustomize (Col As Int, Text_Color As Int, Background_Color As Int, TextFont As B4XFont) As String
        eg. Flexgrid.SetColCistomize(1,XUI.Color_Black,XUI.Color_White,XUi.CreateDefaultFont(12))
      • SetColName (ColumnIndex As Int, Name As String) As String
        Index (0..n-1)
        eg. Flexgrid.SetColName(1,"Help")
      • SetColsNumber (ColumnNumber As Int) As String
        Reset Grid and Change Cols Number
      • SetColType (ColumnIndex As Int, Typ As Int) As String
        Index (0..n-1)
        eg. SetColType(0,FlexGrid.TypeInt)
      • SetColWidth (ColumnIndex As Int, Width As Int) As String
        Index (0..n-1)
        eg. SetColWidth(0,100dip)
      • SetDataRow (Row As Int, Cell As Object()) As String
        eg. Flexgrid.SetRow(Row,Array As Object(i,B,"User ","Description " ,100.00))
      • SetDataRow2 (Row As Int, Cell As Object(), HeightRow As Int) As String
        eg. Flexgrid.SetRow2(Row,Array As Object(i,B,"User ","Description " ,100.00),40dip)
      • SetFeetHeight (Height As Int) As String
        Set Header Height
      • setFootColValue (col As Int, Fv As String) As String
        eg. Flexgrid.FeetValue=array As String ("First","Second")
      • setHeaderAlignment (Col As Int, Alignment As String) As String
        eg. Flexgrid.HeaderAlignment="CENTER"
      • SetHeadHeight (Height As Int) As String
        Set Header Height
      • SetPadding (Left As Int, Top As Int, Right As Int, Bottom As Int) As String
        eg. FlexGrid1.SetPadding(10dip,0,10dip,0)
      • SetRowCustomize (Row As Int, Text_Color As Int, Background_Color As Int, TextFont As B4XFont) As String
        eg. Flexgrid.SetRowCustomize(1,XUI.Color_Black,XUI.Color_White,XUi.CreateDefaultFont(12))
      • SetRowHeight (IndexRow As Int, Height As Int) As String
        IndexRow (0..Size-1)
        eg. setRowHeight(0,60dip)
      • SetRowsHeight (Height As Int) As String
        Set all Rows Height
      • SetSingleLine (SLine As Boolean) As String
        To set the cells to single or multiple lines
      • SortForCol (Column As Int) As String
    • Properties:
      • Base As B4XView [read only]
      • ColCount As Int [read only]
      • ColorSelectedArea
        Set the color of the selected area
      • ColorSelectingArea
        Set the color of the area during the selection phase
      • ColsAlignment
        eg. setColsAlignment(Array As String ("LEFT","CENTER","CENTER","RIGHT"))
      • ColsName As String()
        eg. Flexgrid.ColName=array As String ("First","Second")
      • ColsType
        eg. ColsType=Array As Int(FlexGrid1.TypeInt,FlexGrid1.TypeCheck,FlexGrid1.TypeString,FlexGrid1.TypeString,FlexGrid1.TypeFloat)
      • ColsWidth
        eg. SetColsWìdth(Array As Int (100dip,50dip,100dip,100dip))
      • Font
        eg. Flexgrid.Font=xui.CreateDefaultFont(12)
      • FootFont
        eg. Flexgrid.FeetFont=xui.CreateDefaultFont(12)
      • FootValue As String()
        eg. Flexgrid.FeetValue=array As String ("First","Second")
      • FootVisible
        eg. FG.FeetVisible=True
      • HeaderFont
        eg. Flexgrid.HeaderFont=xui.CreateDefaultFont(12)
      • HeaderVisible
        eg. FG.HeadVisible=True
      • Height As Int
      • RowCount As Int [read only]
        Dim Size as int = Flexgrid.RowCount
      • ScrollToCol
        eg. Flexgrid.ScroolToCol=50 (Col= 0..Size-1)
      • ScrollToRow
        eg. Flexgrid.ScroolToRow=50 (Row= 0..Size-1)
      • ScrollX As Double
      • ScrollY As Double
      • SelectedColumnEnd As Int [read only]
        return -1 if not selected
      • SelectedColumnStart As Int [read only]
        return -1 if not selected
      • SelectedRowEnd As Int [read only]
        return -1 if not selected
      • SelectedRowStart As Int [read only]
        return -1 if not selected
      • Width As Int


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List/Spinner
video7-gif.118379


For more details: https://www.b4x.com/android/forum/threads/xui-flexgrid.98686/

Significative release logs:
  • 0.12
    • Add method SelectCells (FromRow As Int, FromCol As Int, ToRow As Int, ToCol As Int, Mobile As Boolean)
    • Modify method SelectCell (Row As Int, Col As Int, Mobile As Boolean)
  • 0.15: Added HeaderFont
  • 0.16: Added SetColsNumber method.
  • 0.19 (Sample)
    • Add method AddRowCustomize (Cell As Object()
    • Add method SearchInColumn (Text As String, Col As Int, FromRow As Int, exactly As Boolean, IgnoreCap As Boolean) As Int
  • 0.21
    • Add TypeList. Allows you to add a ComboBox type box (Spinner in B4A and Picker in B4i) and select to a list
    • Added other examples to POST n. 2 To populate the grid from the database, search for a string in a column and to use TypeList in the grid
    • added SetCellListIndex method to change the position of the selected index
  • 0.25
    • Added SetHeadHeight method
      sets the height of the header
    • Added SetRowsHeight method
      sets the height of all lines
  • 0.27
    • added properties ScrollX and ScrollY
    • Added events ScrollX() and ScrollY()
  • 0.29: Fixed bugs in vertical scrolling
  • 0.31
    • Added SortForCol(Column As Int)
    • Added SetDataRow(Row As Int, Cell() As Object) and SetDataRow2(Row As Int, Cell() As Object, HeightRow As Int)
    • Added field ColorSelectedArea and ColorSelectingArea
    • Fix bug
  • 0.32
    • Added SearchInColumn2. Returns the list of search result lines
  • 0.33
    • Added setHeaderAlignment
  • 0.34
    • Added the ability to freeze the last row (foot row) as well as the header so you can enter column totals that always remain visible
    • Fix minor bugs
  • 0.35
    • Added the ability to select from Design that text cells are single or multiline
  • 0.36
    • Fix bugs: SortForCol; SetColsNumber
  • 0.37
    • Added: EditTextColor and EditBackgroundColor fields to be able to select colors for the on-site editable cell. By default it is black background and white text
  • 0.38
    • Fixed bug on CheckBox alignment
  • 0.39
    • Singleline and multiline option of the design now also affects the column header and column foot
  • 0.40
    • Added ScrollToCol (together with ScrollToRow it is possible to position in a specific cell)
  • 0.41
    • Fix bug
  • 0.42
    • Added Width and Height to change the size of the grid from code during execution
  • 0.43
    • Fixed bug on SearchInColumn2
  • 0.44
    • Added SetSingleLine - To set the cells to single or multiple lines
  • 0.45
    • Added SetPadding
  • 0.46
    • Fix bugs
  • 0.47
    • Fix Bugs
 

Attachments

Last edited:
Click to expand...
Update 0.26
  • Fix bug.
    Fixed a bug when switching focus from one editable box to another
 
Star-Dust said:
for what purpose?
Click to expand...
Thanks for the reply.

I have a product list on the bottom (using the library) and on the top all the product information I want the user to double-click on the grid to be able to edit the product information on the top and not on the grid itself and I try not use the click option to avoid mistakes when scrolling thought the list.
 
Events:
  • CellClick (Row As Int, Col As Int)
  • CellLongClick (Row As Int, Col As Int)
  • HeadClick (Index As Int)
  • Modified (Row As Int, Col As Int)
 
Star-Dust said:
Update 0.26
  • Fix bug.
    Fixed a bug when switching focus from one editable box to another
Click to expand...
I get an error with this update when using
FlexGrid1.ClearRows
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.get(ArrayList.java:437)
at anywheresoftware.b4a.objects.collections.List.Get(List.java:117)
at b4a.example.flexgrid._selectviewer(flexgrid.java:2456)
at b4a.example.flexgrid$ResumableSub_CreateGrid.resume(flexgrid.java:938)
at b4a.example.flexgrid._creategrid(flexgrid.java:798)
at b4a.example.flexgrid._invalidate(flexgrid.java:1919)
at b4a.example.flexgrid._clearrows(flexgrid.java:495)
at b4a.example.principal$ResumableSub_B4XPage_CloseRequest.resume(principal.java:199)
at anywheresoftware.b4a.shell.DebugResumableSub$DelegatableResumableSub.resumeAsUserSub(DebugResumableSub.java:48)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:348)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:193)

PS
I do have lines of data on the FlexGrid
 
Oscarin said:
I get an error with this update when using
FlexGrid1.ClearRows
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.get(ArrayList.java:437)
at anywheresoftware.b4a.objects.collections.List.Get(List.java:117)
at b4a.example.flexgrid._selectviewer(flexgrid.java:2456)
at b4a.example.flexgrid$ResumableSub_CreateGrid.resume(flexgrid.java:938)
at b4a.example.flexgrid._creategrid(flexgrid.java:798)
at b4a.example.flexgrid._invalidate(flexgrid.java:1919)
at b4a.example.flexgrid._clearrows(flexgrid.java:495)
at b4a.example.principal$ResumableSub_B4XPage_CloseRequest.resume(principal.java:199)
at anywheresoftware.b4a.shell.DebugResumableSub$DelegatableResumableSub.resumeAsUserSub(DebugResumableSub.java:48)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:348)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:193)

PS
I do have lines of data on the FlexGrid
Click to expand...
Can you produce an example that produces the error? Why doesn't it return this error to me in my applications.
 
Star-Dust said:
Can you produce an example that produces the error? Why doesn't it return this error to me in my applications.
Click to expand...
This is what I got in the sub

Sub B4XPage_CloseRequest As ResumableSub
If ListView1.Visible Then
ListView1.Clear
ListView1.Visible=False
Return False
End If
Dim sf As Object = xui.Msgbox2Async("¿Desea cerrar Sesión?", "", "Si", "", "No", Null)
Wait For (sf) Msgbox_Result (Result As Int)
If Result = xui.DialogResponse_Positive Then
FlexGrid1.ClearRows
Return True
End If
Return False
End Sub

Then on the logs I get
Error occurred on line: 74 (Principal)
Line 74 is
FlexGrid1.ClearRows
 
Oscarin said:
This is what I got in the sub

Sub B4XPage_CloseRequest As ResumableSub
If ListView1.Visible Then
ListView1.Clear
ListView1.Visible=False
Return False
End If
Dim sf As Object = xui.Msgbox2Async("¿Desea cerrar Sesión?", "", "Si", "", "No", Null)
Wait For (sf) Msgbox_Result (Result As Int)
If Result = xui.DialogResponse_Positive Then
FlexGrid1.ClearRows
Return True
End If
Return False
End Sub

Then on the logs I get
Error occurred on line: 74 (Principal)
Line 74 is
FlexGrid1.ClearRows
Click to expand...
I asked you for an example not the code, this means creating a small project that has this problem so that it can Debug.

In any case, it is not the ClearRows that produces the error, looking at the error it seems that you are simultaneously clearing you are doing a refresh of the grid or you are accessing the rows of the grid.

In the error I need to see the part starting from 'CAUSATED BY' so that the SUB that generates it is identified
 
Update 0.27
  • added properties ScrollX and ScrollY
  • Added events ScrollX() and ScrollY()
 
Last edited:
Star-Dust said:
I asked you for an example not the code, this means creating a small project that has this problem so that it can Debug.

In any case, it is not the ClearRows that produces the error, looking at the error it seems that you are simultaneously clearing you are doing a refresh of the grid or you are accessing the rows of the grid.

In the error I need to see the part starting from 'CAUSATED BY' so that the SUB that generates it is identified
Click to expand...
I've found what causes the error, I don't know if it is a bug or just bad programming (I don't remember from where I copied)
In my app, the user adds lines with descriptions and qty to the grid
When the user add something that is already on the grid, I add the qty to the one is already there, and I had this lines on my code
FlexGrid1.ScrollToRow=Row
FlexGrid1.SelectRow(Row)
FlexGrid1.SetCellValue(Row,2,que_cantidad)

When the user exited the app and called the
FlexGrid1.ClearRows
is when I get the error.
To fix the problem, I removed the
FlexGrid1.ScrollToRow=Row
FlexGrid1.SelectRow(Row)
And I don't get the error anymore
 
Oscarin said:
I've found what causes the error, I don't know if it is a bug or just bad programming (I don't remember from where I copied)
In my app, the user adds lines with descriptions and qty to the grid
When the user add something that is already on the grid, I add the qty to the one is already there, and I had this lines on my code
FlexGrid1.ScrollToRow=Row
FlexGrid1.SelectRow(Row)
FlexGrid1.SetCellValue(Row,2,que_cantidad)

When the user exited the app and called the
FlexGrid1.ClearRows
is when I get the error.
To fix the problem, I removed the
FlexGrid1.ScrollToRow=Row
FlexGrid1.SelectRow(Row)
And I don't get the error anymore
Click to expand...
I think it's a bug, I'll try to fix it in the next update
 
Is there a way to have an automatic with of the columns?
Let's say that I have 2 columns with smaller than the width of the screen and I anchor the grid on to both sides of the screen, the grid will fill the width but I'll have a gray empty area because the width of the columns are smaller than the width of the screen
 
Congratulations for the library, the closest available for the B4X environments of the famous TrueGrid
I'm trying the example for B4J, how to change the sort order according to column 3, or 2, etc?
I'm talking about what you basically do with the various dbgrids by clicking on the column title
Or to change the order, the only way is to modify the select sql?
 
NEW EXAMPLE.
In FlexGrid we can have a fixed line at the top of the grid.
How to get a fixed row at the bottom of the row, similar to a column total?How to get a fixed Column on the left of the Table?
Attached is a cross-platform example that illustrates how to achieve these particular effects with a little more code.

NB. You no longer need to follow this example to freeze the grid foot row. See update 0.34


Video4.gif
 

Attachments

Last edited:
In testing the function that sorts by column.
But I am not sure that I will publish it because I am thinking of creating a new library for grids with more functions

B4X: 
Sub FlexGrid1_HeadClick(Index As Int)
    Log("Click Head Col: " & Index)
    FlexGrid1.SortForCol(Index)
End Sub

ezgif.com-gif-maker.gif
 
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