B4A Library Grid/Table and ListView Library

GaryK4 · Nov 2, 2017

magi6162 said:
Sorry,
could you list a list of all the grid events?

thanks

Hi,

I am just in the evaluation process. The current events are select, long_select and CellProps.

As I said in my edited message, I got the program to work.
GridCreate2(False) was creating a java error.
GridCreate works!

I'm not sure what the difference is, but I will go with what is working.

Bladimir Silva Toro · Nov 6, 2017

I really liked your Grid, I was trying I would like to know how vertical scroll bars are displayed?

stefanobusetto · Nov 10, 2017

The horizontal and vertical scroll bars are automatically display.
You can enable the FastScroll option

B4X:

Grid.FastScroll = True ;

GaryK4 · Dec 9, 2017

I added the following code to the provided sample program.

Sub gg_CellProps ( aCol As Int , aRow As Int , aValue As String , aProps As xnGridCellProps )
Log (aCol & " - " & aRow)
End Sub

There are 3 rows with 4 columns.
When I touch a cell, It lists all rows and columns. Not just the one that I selected?

Am I doing something wrong?

stefanobusetto · Dec 10, 2017

The CellProps is called every time a cell is painted.
You can set the cell properties assigning vaules to the aProps object.
The aCol , aRow and aValue are passed to provide information on the
painting cell.
What do you want to do?

GaryK4 · Dec 10, 2017

stefanobusetto said:
The CellProps is called every time a cell is painted.
You can set the cell properties assigning vaules to the aProps object.
The aCol , aRow and aValue are passed to provide information on the
painting cell.
What do you want to do?

I want to long click on a cell and change it value and background color. Basically, a toggle column.

stefanobusetto · Dec 12, 2017

Save the row when the user long click the cell
then in the cellprops event
if aRow = SavedRow then
....
endif

jrat · Apr 26, 2018

how to set the color of a row based on the value of one column?

imgsimonebiliato · Apr 26, 2018

jrat said:
how to set the color of a row based on the value of one column?

Hi @jrat you need to implement this method:

B4X:

Dim grid as xnGrid

Sub grid_CellProps ( aCol As Int, aRow As Int, aValue As String, aProps As xnGridCellProps )
Dim v As String
v = grid.GetValue2 ( aRow, "VALUE" )

If v = "0" Then aProps.BackGroundColor = Colors.Red
If v = "1" Then aProps.BackGroundColor = Colors.Green

End Sub

jrat · Apr 26, 2018

Thanks it`s work

laguilar · Oct 1, 2018

What reason would the grid appear, but not the rows, only the headers? The row count is > 0 when I look at it in the watch window and the call to RowAppend returns a boolean value of true. I noticed that if I move the focus to a EditText box that is on the screen, then the rows become visible. I've tried calling .Invalidate on the parent panel that the grid is inside of, and I've tried calling the GridRepaint, still no affect. Any ideas?

stefanobusetto · Oct 1, 2018

Sorry
I have no idea.

MarkusR · Oct 1, 2018

laguilar said:
What reason would the grid appear, but not the rows, only the headers? The row count is > 0 when I look at it in the watch window and the call to RowAppend returns a boolean value of true. I noticed that if I move the focus to a EditText box that is on the screen, then the rows become visible. I've tried calling .Invalidate on the parent panel that the grid is inside of, and I've tried calling the GridRepaint, still no affect. Any ideas?

try to reproduce it in a new project and if the problem is still there export the project from ide and open a new question with attachment.

imgsimonebiliato · Oct 1, 2018

laguilar said:
What reason would the grid appear, but not the rows, only the headers? The row count is > 0 when I look at it in the watch window and the call to RowAppend returns a boolean value of true. I noticed that if I move the focus to a EditText box that is on the screen, then the rows become visible. I've tried calling .Invalidate on the parent panel that the grid is inside of, and I've tried calling the GridRepaint, still no affect. Any ideas?

Have you called?

B4X:

aGrid.GridCreate

Bladimir Silva Toro · Jan 12, 2024

Dear colleagues

I have been using this library since 2015 in my B4A projects.

I need to be able to create a column that is invisible to the user.

This is my code to create the column:

cc(0).Initialize2 ( "Cod" , "codb" , 50dip , Gravity.CENTER_VERTICAL + Gravity.CENTER_HORIZONTAL)
gg.ColAppend ( cc(0) )

I can't make it invisible to the user.

I thank you in advance for your valuable collaboration.

aviario · Jan 16, 2024

cc(0).Initialize2 ( "Cod" , "codb" , 0dip , Gravity.CENTER_VERTICAL + Gravity.CENTER_HORIZONTAL)
gg.ColAppend ( cc(0) )

B4A Library Grid/Table and ListView Library

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