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)
- 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 --> 3.33 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: 2024.01.13 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: 1,966
  • 1589638550715.png
    1589638550715.png
    31.8 KB · Views: 1,389
  • TestFastScroll.zip
    50.6 KB · Views: 1,277
  • Table.bas
    136.3 KB · Views: 81
  • TableV3_33.zip
    106.4 KB · Views: 117
Last edited:

fishwolf

Well-Known Member
Licensed User
Longtime User
i'm trying to use SetRowColorN, but i have a error to runtime

B4X:
table_setrowcolorn (java line: 5904)
java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
    at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
    at java.util.ArrayList.set(ArrayList.java:481)
    at anywheresoftware.b4a.objects.collections.List.Set(List.java:123)
    at b4a.TableDemo308.table._setrowcolorn(table.java:5904)
    at b4a.TableDemo308.main._activity_create(main.java:376)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:213)
    at b4a.TableDemo308.main.afterFirstLayout(main.java:105)
    at b4a.TableDemo308.main.access$000(main.java:17)
    at b4a.TableDemo308.main$WaitForLayout.run(main.java:83)
    at android.os.Handler.handleCallback(Handler.java:743)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:150)
    at android.app.ActivityThread.main(ActivityThread.java:5621)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:794)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:684)

B4X:
Sub Activity_Create(FirstTime As Boolean)
   
    Table1.Initialize(Me, "TableResults")
    Table1.AddToActivity(Activity, 0, 0, 100%x, 100%y)
    Table1.InitializeTable(10, Gravity.CENTER_HORIZONTAL, True)
   
    Table1.SetHeader(Array As String("Data", "Prove", "Arr", "Tp", "E/R", "Pen", "Qual", "Extra1", "Extra2", "Extra3"))

    Table1.SetColumnsWidths(Array As Int(25%x, 25%x, 25%x, 25%x, 25%x, 25%x, 25%x, 25%x, 25%x, 25%x))

    Dim Alignments() As Int
    Alignments = Array As Int(Gravity.LEFT, Bit.Or(Gravity.LEFT, Gravity.CENTER_VERTICAL), Gravity.CENTER, Gravity.LEFT, Gravity.LEFT, Gravity.LEFT, Gravity.LEFT, Gravity.LEFT, Gravity.LEFT, Gravity.LEFT)
    Table1.SetHeaderAlignments(Alignments)
    Table1.SetCellAlignments(Alignments)
   
   
    For Ind = 0 To 20
        Table1.SetRowColorN(Ind, Colors.Green)
        Table1.AddRow(Array As String(Ind, "bbbbbb", "cccccc", "dddddd", "eeeeee", "ffffff", "gggggg", "hhhhhh", "iiiiii", "yyyyyy") )
    Next  
   
    Table1.FirstColumnFixed = True
   
End Sub
 

fishwolf

Well-Known Member
Licensed User
Longtime User
[QUOTE = "klaus, post: 758114, membro: 904"]
Prova questo :
[CODE = b4x] Per Ind = da 0 a 20
Table1.AddRow (Array As String (Ind, "bbbbbb", "cccccc", "dddddd", "eeeeee", "ffffff", "gggggg", "hhhhhh", "iiiiii", "yyyyyy"))
Table1.SetRowColorN (Ind, Colors.Green)
Avanti [/ CODE]
[/CITAZIONE]
no error is showed, ma only the rows from 13 to 20 are green
from 1 to 12 are with 2 default colors
 

fishwolf

Well-Known Member
Licensed User
Longtime User
if reload the data table and change color (click on cell) some color rows are wrong

attach the demo project
 

Attachments

  • Table.zip
    32.3 KB · Views: 256
Last edited:

Kanne

Member
Licensed User
Longtime User
well, it seems that there is a problem when looking up for the color when the color is a large negative value.
SetRowColorN then allways add's the color to the colorlist - even when already within the list:
B4X:
Public Sub SetRowColorN(Row As Int, Color As Int)
    Private col As Int
    Private New = False As Boolean
    If lstRowColors.IndexOf(Color) > 0 Then
        lstRowColorIndexes.Set(Row, lstRowColors.IndexOf(Color) + 2)
    Else
        lstRowColors.Add(Color)
        lstRowColorIndexes.Set(Row, lstRowColors.Size + 1)    'specific row color indexes begin with 2
        New = True
    End If

Klaus may take a look on that - I use the callback function for colorization and this will also work on your project:
B4X:
Sub ShowTable
    Table1.ClearAll
    For Ind = 0 To 19
        Table1.AddRow(Array As String(Ind, "bbbbbb", "cccccc", "dddddd", "eeeeee", "ffffff", "gggggg", "hhhhhh", "iiiiii", "yyyyyy") )
    Next
End Sub

Sub Table1_CellClick(col As Int, row As Int)
    If Color = Colors.Red Then
        Color = Colors.Yellow
    Else
        Color = Colors.Red
    End If
    ShowTable
End Sub

Sub Table1_ShowRow(row As Int, lbls() As Label)
    For i = 0 To lbls.length - 1
        If row=5 Or row=10 Or row=15 Then
            lbls(i).Color = Color
        Else
            lbls(i).Color = Colors.Green
        End If
    Next
End Sub
 

fishwolf

Well-Known Member
Licensed User
Longtime User
B4X:
Sub Table1_ShowRow(row As Int, lbls() As Label)
    For i = 0 To lbls.length - 1
        If row=5 Or row=10 Or row=15 Then
            lbls(i).Color = Color
        Else
            lbls(i).Color = Colors.Green
        End If
    Next
End Sub

in prod application color depends from data values
how to access to columns value from callback?
 

Kanne

Member
Licensed User
Longtime User
you can examine the text of every label like this
B4X:
Sub Table1_ShowRow(row As Int, lbls() As Label)
    For i = 0 To lbls.length - 1
        If row=5 Or row=10 Or row=15 Then
            lbls(i).Color = Color
        Else
            Select True
                Case lbls(i).Text.StartsWith("b")
                    lbls(i).Color = Colors.Blue
                Case lbls(i).Text.StartsWith("c")
                    lbls(i).Color = Colors.Magenta
                Case lbls(i).Text.StartsWith("d")
                    lbls(i).Color = Colors.Cyan
                Case Else
                    lbls(i).Color = Colors.Green
            End Select
        End If
    Next
End Sub
 

klaus

Expert
Licensed User
Longtime User
The Table Class has been updated to version 3.26
Amended problem with sort with remove accents
Amended problem with SetRowColorN
Added SetCellAlignmentColN method
Added SetHeaderAlignmentColN method
how to access to columns value from callback?
You can get the value with:
B4X:
Value = Table1.GetValue(Col, Row)
 

esyak

New Member
Licensed User
Hi, I have a problem with the background color of some cells after loading the table (via sqlite if matters). The problem is that if i scroll the table (with about 100 elements) at some point the background color of some cells in columns changes. The color (rowcolor1 & rowcolor2) is set in the designer only. After some tries, i found that the background of rowcolor (1 & 2) become the same of the table. If i click on cell, the color return to the normal one.

Immagine.png
 
Last edited:

esyak

New Member
Licensed User
Currently I am not at home, will be back on Sunday.
Can you post a small project showing the problem.
It's a simple Table1.LoadSQLiteDB(Connessione.mySQL,Strsql,True)
where Strsql is a string with a query, nothing more.
 

Sergey_New

Well-Known Member
Licensed User
Longtime User
Using together B4XDialog and Table.
When the dialog is closed, a white or black background appears in place of the keyboard, depending on the installed theme. How can avoid this?
An example is attached.
 

Attachments

  • TableExample.zip
    28.1 KB · Views: 214

klaus

Expert
Licensed User
Longtime User
Sorry, but I don't understand the problem.
You need to fill the table with data to see something.
The Table class doesn't check the theme and does not change any color according to the selected theme.
All the colors can be defined in the Designer or changed in the code.
 
Top