B4A Library [Class] Flexible Table

klaus · Jun 30, 2013

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:

klaus · Jun 11, 2015

Yes and no.
You can click on a cell and get its value.
But you need to manage the value changing and the update of the table and the DB in your code.
It is not possible to change a value directly in the table.

Micholl · Jul 4, 2015

Did I miss something? Something changed?
I'm using Nexus 7 Android 5.1.1 and B4A 5.02 (1).
The example from TableV1_43 crashes after a swipe gesture from right to left on the first table.

Getting: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.graphics.drawable.Drawable.setAlpha(int)' on a null object reference.

Any hint, help or suggestion really appreciated .

Michael

B4X:

Connected to B4A-Bridge (Wi~e:java.lang.NullPointerException: Attempt to invoke virtual method 'void android.graphics.drawable.Drawable.setAlpha(int)' on a null object reference
   at flm.b4a.scrollview2d.EdgeEffect.draw(EdgeEffect.java:320)
   at flm.b4a.scrollview2d.TwoDScrollView.draw(TwoDScrollView.java:1984)
   at android.view.View.updateDisplayListIfDirty(View.java:14167)
   at android.view.View.getDisplayList(View.java:14189)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3389)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3368)
   at android.view.View.updateDisplayListIfDirty(View.java:14127)
   at android.view.View.getDisplayList(View.java:14189)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3389)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3368)
   at android.view.View.updateDisplayListIfDirty(View.java:14127)
   at android.view.View.getDisplayList(View.java:14189)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3389)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3368)
   at android.view.View.updateDisplayListIfDirty(View.java:14127)
   at android.view.View.getDisplayList(View.java:14189)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3389)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3368)
   at android.view.View.updateDisplayListIfDirty(View.java:14127)
   at android.view.View.getDisplayList(View.java:14189)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3389)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3368)
   at android.view.View.updateDisplayListIfDirty(View.java:14127)
   at android.view.View.getDisplayList(View.java:14189)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3389)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3368)
   at android.view.View.updateDisplayListIfDirty(View.java:14127)
   at android.view.View.getDisplayList(View.java:14189)
   at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:273)
   at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:279)
   at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:318)
   at android.view.ViewRootImpl.draw(ViewRootImpl.java:2530)
   at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2352)
   at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1982)
   at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1061)
   at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5885)
   at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
   at android.view.Choreographer.doCallbacks(Choreographer.java:580)
   at android.view.Choreographer.doFrame(Choreographer.java:550)
   at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
   at android.os.Handler.handleCallback(Handler.java:739)
   at android.os.Handler.dispatchMessage(Handler.java:95)
   at android.os.Looper.loop(Looper.java:135)
   at android.app.ActivityThread.main(ActivityThread.java:5254)
   at java.lang.reflect.Method.invoke(Native Method)
   at java.lang.reflect.Method.invoke(Method.java:372)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Connected to B4A-Bridge (Wifi)
sending message to waiting queue (CallSubDelayed - UpdateStatus)
Ignoring event (too many queued events: CallSubDelayed - UpdateStatus)

klaus · Jul 4, 2015

Sorry, but I don't know what happens.
I tested the program on my Sony xperia z1 with Android 5.0.2 and B4A 5.02 and it works OK.
Are there other users haveing a device with Android 5.1.1 who could test it.

Micholl · Jul 4, 2015

Obviously it's a problem with my version of ScrollView2D.
Library version *with* error is:

B4X:

<version>2.2</version>
<author>Fr\u00e9d\u00e9ric Leneuf-Magaud</author>

Maybe I got this one with ULV - UltimateListView.
Latest version from libs thread running *without* error seems to be this:

B4X:

<version>1.1</version>
<comment>ScrollView2D = HorizontalScrollView + VerticalScrollView</comment>
<author>Fr\u00e9d\u00e9ric Leneuf-Magaud</author>

I think I should ask Informatix about this.

So for the Moment the problem is SOLVED - thank you for checking!

Michael

klaus · Jul 4, 2015

I use the library from this thread ScrollView2D.

Marlin Snyder · Aug 4, 2015

If this is not the right place for this question, I apologize, and if you can direct me to the appropriate place, I'll move there.

I use a non-standard (not relational, not normalized) database system, that we have successfully been able to connect to, and we are able to return data to load spinners with single columns of data. Once we make selections with those spinners to narrow down the focus, I can run a query and return several pertinent rows of data to my app, and I can concatenate the columns to fill a listbox control. I would really like to be able to use this Flexible Table or other grid component to accept the data I am already retrieving from the database.

In the included ZIP file, I'm setting up the TAGS variable as a list object (line 193, 194) then grabbing the data from the map and displaying it in the ListViews (lines 195-221).

Any assistance on getting this data into a grid or table object would be appreciated.

Thank you very much for the support in these forums.

Sincerely,

mksnyder

klaus · Aug 5, 2015

Sorry, but I cannot look at your problem before a week, I will be absent for 1 week since tomorrow.

LucaMs · Aug 5, 2015

At first glance, you could take advantage of the processing of CSV file (that is, do a conversion of data in that format, routines SaveTableToCSV and LoadTableFromCSV2).

stevel05 · Aug 6, 2015

I have just started to use this class for a project, flexible table is definitely the right name for it. It works nicely and copes with a large amount of data very well. A great and very useful implementation.

I have found a small issue in that if you change the text size or colour after having added the table to a view, but before filling it, the cached labels are not updated. So only newly created labels have the required properties.

I apologize if this has been covered, I did look through the very large thread, but did not find anything related.

Jay Young · Aug 11, 2015

how do you pull the data out of the Table1.GetValues(Row)

My code is:
todayALL = Table1.GetValues(Row)
it shows the values from the selected row just wondering how i get those values out to other variables

klaus · Aug 13, 2015

@Marlin Snyder
Here you are.
As promised a week ago I had a look at your problem.
Attached a modified project with the Flexible Table.
You can remove the two ListViews TreatmentHeader and Treatment.

klaus · Aug 13, 2015

@Jay Young

Table1.GetValues(Row) returns an array of strings, so:

B4X:

Dim todayALL() As String
todayALL = Table1.GetValues(Row)
Log(todayALL(0))
Log(todayALL(1))

Then you get the different values with todayALL(0), todayALL(1) etc.

Marlin Snyder · Aug 18, 2015

klaus said:
@Marlin Snyder
Here you are.
As promised a week ago I had a look at your problem.
Attached a modified project with the Flexible Table.
You can remove the two ListViews TreatmentHeader and Treatment.

@klaus Thank you VERY much! This is working, I'll look over the code and see how it is implemented, and make any necessary modifications. I appreciate the assistance.

Roberto P. · Aug 25, 2015

Hello
you can make too much text in a column to wrap automatically, without being cut off?

klaus · Aug 25, 2015

The Labels are multiline by default.
How do you set the column widths and the CellAlignment ?

Roberto P. · Aug 25, 2015

I set the size of the width of columns

SetColumnsWidths(Array As Int(100, 170, 100, 140,250,300, 300, 80, 60, 300, 400, 140, 50, 52, 200, 150, 57, 58, 100, 140, 90, 52, 150, 54, 150, 100, 200, 58))

I did not set the alignment of cells
thanks

klaus · Aug 25, 2015

How do you set the row height ?
Did you try to increae it to see if the text is truncated horizontally or vertically ?
Otherwise, can you post your project as a zip file ?

Roberto P. · Aug 26, 2015

I found it was set mTableAttivita.SingleLine = False
now it works correctly.
thank you

Roberto P. · Aug 26, 2015

I have another question for this nice component.
upright bar appears above the header and I can not take off, can anyone help me?

thank you

klaus · Aug 26, 2015

Without seeing your code it's impossible to give a concrete advice !
Are you sure it belongs to the Table ?
How do you add the Table to the Activity ?

B4A Library [Class] Flexible Table

Attachments

Expert

Member

Expert

Member

Expert

New Member

Attachments

Expert

Expert

Expert

Member

Expert

Attachments

Expert

New Member

Well-Known Member

Expert

Well-Known Member

Expert

Well-Known Member

Well-Known Member

Expert

Similar Threads

Privacy & Transparency

Privacy & Transparency