B4A Library [Class] Flexible Table

This thread will be used by Erel, Melamoud and myself to discuss / post new releases of the Table class.

The table class is a flexible UI component that enable scrollable table like UI, with sortable columns, multiselect rows etc

the table is very efficient, maintaining labels only for visible rows

old thread with details : http://www.b4x.com/forum/additional...view-supports-tables-any-size.html#post110901

The class depend on following libraries:
- StringUtils (standard)
- SQL (standard)
- JavaObject (standard)
- B4XCollections (standard)
- ScrollView2D (additional)

List of major features.
1. scrollable table UI
2. sortable columns
3. select a row, cell or multi select rows
4. callback for selection / click a cell / row
5. callback for long click action
6. read / write to CSV file

Current version --> 3.35 Custom View
Current version --> 1.44 Class

Other complementary routines:

Load data with the Remote Database Connector.

EDIT: LucaMs has written a routine to fill a table with a Remote Database Connector query result see post 182.
The routine hasn't been added into the Class for the reasons explained in post 183.
A sample program can be found HERE.

Code:
B4X: 
'load data from a RDC Request
'Result = DBResult object got from a RDC request
'AutomaticWidths  True > set the column widths automaticaly
'Written by LucasMs
Public Sub LoadRDCResult(Result As DBResult, AutomaticWidths As Boolean)
    cAutomaticWidths = AutomaticWidths
    NumberOfColumns = Result.Columns.Size
    innerClearAll(NumberOfColumns)

    Dim Headers(NumberOfColumns) As String
    Dim ColumnWidths(NumberOfColumns) As Int
    Dim HeaderWidths(NumberOfColumns) As Int
    Dim DataWidths(NumberOfColumns) As Int
    Dim col, row As Int
    Dim str As String
    For col = 0 To NumberOfColumns - 1
        Headers(col) = Result.Columns.GetKeyAt(col)
        If AutomaticWidths = False Then
            ColumnWidths(col) = 130dip
            HeaderWidths(col) = 130dip
            DataWidths(col) = 130dip
        Else
            HeaderWidths(col) = cvs.MeasureStringWidth(Headers(col), Typeface.DEFAULT, cTextSize) + 8dip + cLineWidth
            DataWidths(col) = 0

            Dim FieldValue As Object
            For row = 0 To Result.Rows.Size - 1
                Dim Record() As Object = Result.Rows.Get(row)
                FieldValue = Record(col)
                If GetType(FieldValue) = "java.lang.String" Then
                    DataWidths(col) = Max(DataWidths(col), cvs.MeasureStringWidth(str, Typeface.DEFAULT, cTextSize) + 8dip + cLineWidth)
                End If
            Next
            ColumnWidths(col) = Max(HeaderWidths(col), DataWidths(col))
        End If
    Next
    SetHeader(Headers)
    SetColumnsWidths(ColumnWidths)

    For Each Record() As Object In Result.Rows
        Dim R(NumberOfColumns) As String
        Dim FieldV As String
        For col = 0 To NumberOfColumns - 1
            FieldV = Record(col)
            R(col) = FieldV
        Next
        AddRow(R)
    Next
End Sub

This is another routine updated by cimperia in post #392 using a Map for the columns and a List for the rows.
B4X: 
'load data from a RDC Request
'A RDC request returns a DBResult object, therefore this method
'could be called as is:
'LoadRDCResult(DBResult.Columns, DBResult.Rows, True)
'AutomaticWidths  True > set the column widths automaticaly
'Written by LucasMs
Public Sub LoadRDCResult(Columns As Map, Rows As List, AutomaticWidths As Boolean)
  cAutomaticWidths = AutomaticWidths
  NumberOfColumns = Columns.Size
  innerClearAll(NumberOfColumns)

  Dim Headers(NumberOfColumns) As String
  Dim ColumnWidths(NumberOfColumns) As Int
  Dim HeaderWidths(NumberOfColumns) As Int
  Dim DataWidths(NumberOfColumns) As Int
  Dim col, row As Int
  Dim str As String
  For col = 0 To NumberOfColumns - 1
    Headers(col) = Columns.GetKeyAt(col)
    If AutomaticWidths = False Then
      ColumnWidths(col) = 130dip
      HeaderWidths(col) = 130dip
      DataWidths(col) = 130dip
    Else
      HeaderWidths(col) = cvs.MeasureStringWidth(Headers(col), Typeface.DEFAULT, cTextSize) + 8dip + cLineWidth
      DataWidths(col) = 0

      Dim FieldValue As Object
      For row = 0 To Rows.Size - 1
        Dim Record() As Object = Rows.Get(row)
        FieldValue = Record(col)
       If GetType(FieldValue) = "java.lang.String" Then
         DataWidths(col) = Max(DataWidths(col), cvs.MeasureStringWidth(str, Typeface.DEFAULT, cTextSize) + 8dip + cLineWidth)
       End If
      Next
      ColumnWidths(col) = Max(HeaderWidths(col), DataWidths(col))
    End If
  Next
  SetHeader(Headers)
  SetColumnsWidths(ColumnWidths)

  For Each Record() As Object In Rows
    Dim R(NumberOfColumns) As String
    Dim FieldV As String
    For col = 0 To NumberOfColumns - 1
      FieldV = Record(col)
      R(col) = FieldV
    Next
    AddRow(R)
  Next
End Sub


Load data from a MSMariaDB database.

Another routine for loading data from a MSMariaDB database can be found in post#727.
Thanks to @Magma.

Updates:
EDIT: 2024.04.21 Version 3.35
Replaced the original sorting functions by new ones kindly provided by forum member RB Smissaert.
Amended first scroll scrolling back to 0
Amended Header with transparent color

EDIT: 2024.01.13 Version 3.33
Changed possible values for DataType
TEXT and NUMBER become T, R and I
Amended problem with column colors
Amended problems with SetHeaderColors and SetHeaderTextColors

Version 3.32
Amended Header and HeaderFirst problem in SaveCSVFromTable
Moved If (lblStatusline... from AddRow to ShowRow

Version 3.31
Added SingleLine property for the Designer
Added StatusLineHeight as a property
Added FastScrollLabelMaxChars as a property

EDIT: 2021.06.28 Version 3.30
Added a check for none numeric values for numeric sorting.

EDIT: 2021.06.28 Version 3.29
Amended problem with column colors
Version 3.28
Added NumberOfColumns in the code
Added TopRowIndex method
Version 3.27
Amended MultiSelect EDIT: 2020.09.02 Version 3.26
Amended problem with sort with remove accents
Amended problem with SetRowColorN
Added SetCellAlignmentColN method
Added SetHeaderAlignmentColN method

EDIT: 2020.08.05 Version 3.24
Amended problem with JumpToRowAndSelect not being selected.
Amended error when setting RowHeight before the table initialized

EDIT: 2020.06.19 Version 3.22
Amended error in the insertRowAt routine.

EDIT: 2020.05.25 Version 3.21
Amended bug with TextSize in fixed columns

EDIT: 2020.05.16 Version 3.20
Added fast scroll feature
Version 3.19
Improved automatic width calculation and hidden columns
Version 3.18
Added a check in RemoveRowColorN to ensure that Row is not out of bounds
Added ShowRow event
Amended automatic width calculations
Amended hidden column width problem

EDIT: 2020.04.21 Version 3.17
Amended HeaderHight problem with fixed columns

EDIT: 2020.04.21 Version 3.16
Amended two errors.

EDIT: 2020.04.14 Version 3.14
Added the methods below
- LoadSQLiteDB4(SQLite As SQL, Query As String, AutomaticWidths As Boolean)
loads SQLite data with data type checking
- LoadSQLiteDB5(SQLite As SQL, Query As String, Values() As String, AutomaticWidths As Boolean).
loads SQLite data with data type checking , similar to LoadSQLiteDB4 but for parametrized queries.
- GetColumnDataTypes As String(), returns an Array with the data type for each column.
- GetColumnDataType(Column As Int) As String, returns the data type of the fiven column.
Added the InnerTotalWidth property, read only.
Added multiple first fiexed columns
Added line colors

EDIT: 2020.03.10 Version 3.10
Amended bug reported HERE

EDIT: 2020.03.06 Version 3.09
Amended bug reported HERE.

EDIT: 2020.02.29 Version 3.08
Amended SetHeaderTypefaces method problem reprted HERE.
Added HeaderTypeface property.

EDIT: 2020.01.08 Version 3.07
Amended bug ShowStatisLine = False property bug.
Added MultiSelect property to Designer properties.
You need to open and close the Designer when you use the new version the first time to make the MultiSelect property active.

EDIT: 2019.12.28 Version 3.06
Amened some bugs

EDIT: 2019.12.25 Version 3.05
Added FirstColumnFixed property which allows to fix the first column.
Attention: You need to open and close the Designer to make the new property active.

EDIT: 2019.11.15 Version 3.04
- Added SelectedRowTextColor and SlectedCellTextColor properties
- Added ZeroSelections property, True > when a selected row is pressed it will be unselected False > it remains selected.

EDIT: 2019.11.12 Version 3.03
- Changed JumpToRowAndSelect(Row As Int, Col As Int) to JumpToRowAndSelect(Col As Int, Row As Int)
- Changed LoadSQLiteDB2 signature. Replaced the possible values from "T", "I", "R" to "TEXT", "NUMBER" for coherence with SetColumnDataTypes.
- Added internal sorting bitmaps, avoids loading the image files into the Files folder.
- Added two new properties: SortBitmapWidth and SortBitmapColor.
- Added SetCustomSortingBitmaps method, which allows to use custom bitmaps instead of the internal ones.
Attention: You need to open and close the Designer to make the new properties active.
Attention: You need to invert the parameters in JumpToRowAndSelect.

EDIT: 2019.07.04 Version 3.02
Amended error reported in post #887

EDIT: 2019.06.26 Version 3.01
Amended SingleLine property setting in the code

EDIT: 2019.04.05 Version 3.00
Amended SetColumnColors and SetTextColors
Removed Reflection library dependency

EDIT: 2018.04.11 Version 2.29
Version 2.27
set the two variables sortedCol and sortingDir to Public instaed of Private
added RemoveAccent routine for sorting with accented characters
Version 2.28
Added SetHeaderTypeFaces
Added SortRemoveAccents property
Version 2.29
Added SaveTableToCSV2 with a user defined separator character

EDIT: 2018.04.11 Version 2.26
added LoadSQLiteDB3 method using SQLExec2 instead of SQLExec
The query can include question marks which will be replaced with the values in the array.

EDIT: 2018.03.27 Version 2.25
amended minor errors
added UpdateCell method

EDIT: 2017.11.19 Version 2.22
improved JumpToRowAndSelect scrolls horizontally to the selected column
improved setHeaderHeight
added padding for status bar Label

EDIT: 2017.06.27 Version 2.19
Replaced DoEvents by Sleep(0)
Asked HERE

EDIT: 2017.06.27 Version 2.19
Replaced DoEvents by Sleep(0)
Asked HERE

EDIT: 2017.05.16 Version 2.18
Amended error reported HERE.

EDIT: 2017.03.09 Version 2.17
Amended error reported HERE.

EDIT: 2017.03.09 Version 2.15
Amended error reported here, Event signatures
#Event: CellClick(col As Int, row As Int)
#Event: CellLongClick(col As Int, row As Int)

EDIT: 2016.12.05 Version 2.14
Added NumberOfColumns and NumberOfRows as Public variables.
Amended error reported here.

EDIT: 2016.12.05 Version 2.13
Amended error reported here.
Added NumberOfColumns as a property for the Designer.

EDIT: 2016.07.30 Version 2.10
Amended error with TextAlignment and HeaderTextAlignment reported in post #606

EDIT: 2016.03.15 Version 2.00
Added CustomView support.
This version can be compiled into a library.
Changes between the previous versions and version 2.00
For a Table added in the Designer, this is new
No need to initialize nor add it onto a parent view
'For a Table added in the Designer, this is new
'No need to initialize nor add it onto a parent view

For a Table added in the code:
The Initialize routine has been splittend into two routines.
New:
Initialize (CallBack As Object, EventName As String)
InitializeTable (vNumberOfColumns As Int, cellAlignement As Int, showStatusL As Boolean)
'Example:
Table1.Initialize(Me, "Table1")
Table1.InitializeTable(5, Gravity.CENTER_HORIZONTAL, True)

Old:
Initialize(CallBack As Object, EventName As String, vNumberOfColumns As Int, cellAlignement As Int, showStatusL As Boolean)
Example:
Table1.Initialize(Me, "Table1", 5, Gravity.CENTER_HORIZONTAL, True)

EDIT: 2015.04.29 Version 1.43
As the modifications in LoadSQLiteDB don't work in all cases I went back.
LoadSQLiteDB as in version 1.40
Added LoadSQLiteDB2 where the column data types must be given.

EDIT: 2015.04.26 Version 1.42
Changed he LoadSQLiteDB routine, version 1.41 didn't work as expected.
The final solution was suggested by cimperia HERE.

EDIT: 2015.04.16 Version 1.41
Changed the LoadSQLiteDB routine according to the error reported in the SQL issue thread
and the SQLite Cursor GetString versus GetDouble thread.
The problem appears with numbers bigger than 999999.
I left version 1.40 in case of problems.
I tested it with a few databases, but I am not sure if it works in all cases.

EDIT: 2015.03.05
Amended bugs reported in posts #383 and #386
Added SetAutomaticWidths routine

EDIT: 2015.02.19
Amended the problem alignment reported in post # 378

EDIT: 2015.02.13
Amended the problem of rows not shown reported in post # 371

EDIT: 2015.01.09
Added header aligments

EDIT: 2014.08.14
Added HeaderHeight property
Amended RowColor problem reported in post #260

EDIT: 2014.08.10
Added SortColumn property asked in post #266
Added UseColumnColors ColumnColors and HeaderColors propeties

EDIT: 2014.05.10 Added RowHeight as a property

Screenshot:

1589638570453.png
 

Attachments

  • TableV1_44.zip
    44.8 KB · Views: 2,218
  • 1589638550715.png
    1589638550715.png
    31.8 KB · Views: 1,641
  • TestFastScroll.zip
    50.6 KB · Views: 1,487
  • Table.bas
    152.2 KB · Views: 225
  • TableV3_35.zip
    110 KB · Views: 308
Last edited:
Click to expand...
klaus

klaus

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@watersoft.
I looked at the problem trying to scale a Table with the Scale module.
Unfortunately it will not work.

The error you get is a problem with the ScrollView2D library version 1.2 you won't get it with version 1.1.
I reported it in this Tread.

But the main problem is that the internal Labels in the Table are automatically redefined when you scroll.
In the Scale module it's impossible to know that the CustomView is a Table.
So it's impossible to change the internal dimensions.
The visible Labels are scaled but not the others.
 
klaus

klaus

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Longtime User
Some users report to me some visual errors in the Table, like the Headers and row height in some moviles.
Click to expand...
From the screenshot it seems that the RowHeight and TextSize are not matching, either RowHeight is too small or TextSize is too big.
Do these users have set the Font size on their device to a big size ? This could be the reason.

The problem with TextAlignment was an error in the Table class.
New updated version 2.10 in the first post.
 
watesoft

watesoft

Active Member
Licensed User
Longtime User
klaus said:
@watersoft.
I looked at the problem trying to scale a Table with the Scale module.
Unfortunately it will not work.

The error you get is a problem with the ScrollView2D library version 1.2 you won't get it with version 1.1.
I reported it in this Tread.

But the main problem is that the internal Labels in the Table are automatically redefined when you scroll.
In the Scale module it's impossible to know that the CustomView is a Table.
So it's impossible to change the internal dimensions.
The visible Labels are scaled but not the others.
Click to expand...


Thanks Klaus
I use the latest version ScrollView2D, The error does not occur. but the result,as you said, is not ideal to scale a Table with the Scale module.
As a transitional, In table class, I add "Scale.GetScaleY" to Public Sub DesignerCreateView,As shown below in bold font:

Public Sub DesignerCreateView (Base As Panel, Lbl As Label, Props As Map)
pnlTable = Base
cLeft = Base.Left
cTop = Base.Top
cWidth = Base.Width
cHeight = Base.Height
pnlTable.Color = Colors.Transparent
'sets the text alignment property
cAlignment = Gravity.CENTER
cHeaderAlignment = Gravity.CENTER
cLineWidth = DipToCurrent(Props.Get("LineWidth"))

cHeaderColor = Props.Get("HeaderColor")
cTableColor = Props.Get("TableColor")
cHeaderTextColor = Props.Get("HeaderTextColor")
cTextColor = Props.Get("CellTextColor")
cRowColor1 = Props.Get("Row1Color")
cRowColor2 = Props.Get("Row2Color")
cSelectedRowColor = Props.Get("SelectedRowColor")
cSelectedCellColor = Props.Get("SelectedCellColor")

cTextSize = Props.Get("TextSize")*Scale.GetScaleY

cRowHeight = DipToCurrent(Props.Get("RowHeight"))*Scale.GetScaleY
cHeaderHeight = DipToCurrent(Props.Get("HeaderHeight"))*Scale.GetScaleY
cShowStatusLine = Props.Get("ShowStatusLine")
InitTable
End Sub

Add horizontal and veritcal Anchor on Table View ,Then I ScaleAllX the views except Table view. It looks pretty good in simulators with Different resolutions and sizes.
But I still want to scale a Table with the Scale module if it is possible.Sincerely hope you can add this feature to scale module next update.

Best ragards
 
klaus

klaus

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But I still want to scale a Table with the Scale module if it is possible.
Click to expand...
Unfortunately this is not possible.
A CustomView is considered as a Panel with the GetType function.
For 'standard' CustomViews the Scale module works because the CustomView.Panel will be scaled with all its childs.
I tryed to use the Tag property to know if the Panel is a Table class, but this doesn't work because in this case I don't know the Table instance.
But the Table is special because the Labels are generated dynamically which needs a special treatment.

Attached you find a modified version of the table class.
I added a ScaleTable(ScaleX As Double, ScaleY As Double, ScaleAllDone As Boolean) routine.
Where you provide the two scale factors.
You can use Scale.ScaleAll to scale everything and the use:
Table2.ScaleTable(Scale.GetScaleX, Scale.GetScaleY, True)
to scale only the internal Labels.
 

Attachments

  • TestTableScaleV2_11.zip
    31.4 KB · Views: 231
vbmundo

vbmundo

Well-Known Member
Licensed User
Hi Klauss,

Your Lib have a SORT BUG...

In Numeric column, the sort put first the value "10049" to "9954"

I'm running with diferent data and it's allways the same...

You evaluate an expresion from left to right, but numbers need to evaluate from right to left, because "10500" is greater than "9566" but you compare "1" to "9" and revert the order.
 
LucaMs

LucaMs

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klaus said:
Unfortunately this is not possible.
A CustomView is considered as a Panel with the GetType function.
For 'standard' CustomViews the Scale module works because the CustomView.Panel will be scaled with all its childs.
I tryed to use the Tag property to know if the Panel is a Table class, but this doesn't work because in this case I don't know the Table instance.
But the Table is special because the Labels are generated dynamically which needs a special treatment.

Attached you find a modified version of the table class.
I added a ScaleTable(ScaleX As Double, ScaleY As Double, ScaleAllDone As Boolean) routine.
Where you provide the two scale factors.
You can use Scale.ScaleAll to scale everything and the use:
Table2.ScaleTable(Scale.GetScaleX, Scale.GetScaleY, True)
to scale only the internal Labels.
Click to expand...

I tried the project as it is, Klaus:

Copying updated assets files (4)
** Service (starter) Create **
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
260
260
Error occurred on line: 278 (Scale)
java.lang.NullPointerException
at b4a.example.scale._scaleall(scale.java:80)
at b4a.example.scale._scaleview(scale.java:643)
at b4a.example.scale._scaleall(scale.java:99)
at b4a.example.scale._scaleview(scale.java:548)
at b4a.example.scale._scaleall(scale.java:83)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:703)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:337)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:247)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:134)
at b4a.example.main.afterFirstLayout(main.java:102)
at b4a.example.main.access$000(main.java:17)
at b4a.example.main$WaitForLayout.run(main.java:80)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:149)
at android.app.ActivityThread.main(ActivityThread.java:5061)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:794)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:610)
at dalvik.system.NativeStart.main(Native Method)
** Activity (main) Resume **
 
vbmundo

vbmundo

Well-Known Member
Licensed User
DonManfred said:
The values are strings. Sorting a string will do it this way. Add the value as 09566 and it will be Sorten correctly i guess
Click to expand...

Can't the Script detect that the Column have numeric values and sort right ?

Because if you need to fill with "1" value, you can't show "000001"

Imagine a Double Value... 45.40, you can't show 00000045.40
 
Last edited:
watesoft

watesoft

Active Member
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Longtime User
klaus said:
Unfortunately this is not possible.
A CustomView is considered as a Panel with the GetType function.
For 'standard' CustomViews the Scale module works because the CustomView.Panel will be scaled with all its childs.
I tryed to use the Tag property to know if the Panel is a Table class, but this doesn't work because in this case I don't know the Table instance.
But the Table is special because the Labels are generated dynamically which needs a special treatment.

Attached you find a modified version of the table class.
I added a ScaleTable(ScaleX As Double, ScaleY As Double, ScaleAllDone As Boolean) routine.
Where you provide the two scale factors.
You can use Scale.ScaleAll to scale everything and the use:
Table2.ScaleTable(Scale.GetScaleX, Scale.GetScaleY, True)
to scale only the internal Labels.
Click to expand...

Thanks Klaus to give me a satisfactory answer, I use the modified version of the table class, It's very good in my project.
One thing to note, the modified version can't add table to panel, Otherwise, Error occurred:java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object anywheresoftware.b4a.objects.PanelWrapper.getObject()' . It may be confusing to some people, but this does not affect me, I may add table to Activity.

best regards
 
klaus

klaus

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vbmundo said:
Can't the Script detect that the Column have numeric values and sort right ?
Click to expand...
Yes, this could be done, but it would be very time consuming to check if all the data in a column are numbers.
It would be more efficient to add an array with the data types for the columns and then sort the table according to the data type of the selected column.
There exist a routine in the Table class to sort numbers sortTableNum.
I will have a look at this during the next days.
 
klaus

klaus

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watesoft said:
Otherwise, Error occurred:java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object anywheresoftware.b4a.objects.PanelWrapper.getObject()'
Click to expand...
Do you have an example, I tested the program by adding the table onto a Panel in the Designer and in the code, both work as expected.
 
klaus

klaus

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@vbmundo
Can you try the attached version of the Table class.
I added an array for the column data types and two methods to change them.
In the test project the upper table sorts the number column with strings and the lower table with numbers.
 

Attachments

  • TableV2_12.zip
    27.9 KB · Views: 242
vbmundo

vbmundo

Well-Known Member
Licensed User
klaus said:
@vbmundo
Can you try the attached version of the Table class.
I added an array for the column data types and two methods to change them.
In the test project the upper table sorts the number column with strings and the lower table with numbers.
Click to expand...

Thanks Klauss

I will try...

I have some problems with the ROW HEIGHT , I put 35 at first, but in Tablets or 5' SmartPhones , 35 pixels is too short. then I put 35dip, but now the Row is too tall.

No other users have the same font size, then... can you read the user font size, the movil dimensions, and recalculate the Row height ?

I can try to form the algorithm but I have enough experience in B4A and handling all this.

In 35dip the Head rows dissapear.

Regards
 
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