Android Example UltimateListView Image Grid Example

This is an UltimateListView example that I made with a help of @Informatix and your library:
https://www.b4x.com/android/forum/threads/lib-chargeable-ultimatelistview.22736/

It demonstrates the use of ULV to display images in a grid.

Any help to improved are welcome.

 

[Informatix]

The panel of your cell layout serves no purpose. You should remove it.
"bmp.InitializeSample" in the ContentFiller sub is to avoid. You should load images asynchronously with LoadImageAsync.
I modified your code with these changes.

 

[somed3v3loper]

The panel of your cell layout serves no purpose. You should remove it.
"bmp.InitializeSample" in the ContentFiller sub is to avoid. You should load images asynchronously with LoadImageAsync.
I modified your code with these changes.

Is it OK using this code to show larger images when clicking one cell :

Sub ULV_CellClick(RowID As Long, CellIndex As Byte, Position As Int, ClickedPanel As Panel)
    Dim ImgIdx As Int = Position * NB_COL + CellIndex
    Log("ImgIndex = " & ImgIdx)
    ToastMessageShow(ListImg.Get(ImgIdx), False)
   
    Dim over As Panel
    over.Initialize("over")
   
    Activity.AddView(over,0,0,100%x,100%y)
    over.SetBackgroundImage(LoadBitmap(File.DirAssets,ListImg.Get(ImgIdx)))
   
End Sub

Sub over_Click
    Dim s As Panel=Sender
    s.RemoveView
End Sub

 

[Mahares]

What about this:

Dim MyPicture As String   'Proces_GLobals

Sub ULV_CellClick(RowID As Long, CellIndex As Byte, Position As Int, ClickedPanel As Panel)
    Dim ImgIdx As Int = Position * NB_COL + CellIndex
    MyPicture =ListImg.Get(ImgIdx)
    StartActivity("expand")
End Sub

Create a new activity called: expand that has only the below code:

Sub Activity_Create(FirstTime As Boolean)
    Activity.SetBackgroundImage(LoadBitmap(File.DirAssets,Main.MyPicture))
End Sub

 

[Informatix]

Is it OK using this code to show larger images when clicking one cell :

Sub ULV_CellClick(RowID As Long, CellIndex As Byte, Position As Int, ClickedPanel As Panel)
    Dim ImgIdx As Int = Position * NB_COL + CellIndex
    Log("ImgIndex = " & ImgIdx)
    ToastMessageShow(ListImg.Get(ImgIdx), False)
  
    Dim over As Panel
    over.Initialize("over")
  
    Activity.AddView(over,0,0,100%x,100%y)
    over.SetBackgroundImage(LoadBitmap(File.DirAssets,ListImg.Get(ImgIdx)))
  
End Sub

Sub over_Click
    Dim s As Panel=Sender
    s.RemoveView
End Sub

Yes.

 

[Informatix]

What about this:

Dim MyPicture As String   'Proces_GLobals

Sub ULV_CellClick(RowID As Long, CellIndex As Byte, Position As Int, ClickedPanel As Panel)
    Dim ImgIdx As Int = Position * NB_COL + CellIndex
    MyPicture =ListImg.Get(ImgIdx)
    StartActivity("expand")
End Sub

Create a new activity called: expand that has only the below code:

Sub Activity_Create(FirstTime As Boolean)
    Activity.SetBackgroundImage(LoadBitmap(File.DirAssets,Main.MyPicture))
End Sub

I prefer the first method because I cannot see the benefit of this alternative (if the purpose is just to show an enlarged version).

 

[georgelbs]

I have a little sample of the ULV grid, trying to load images from a Sqlite database (base64 image fields), the only problem is that cell layout is loading the same data at each row, instead a different one for each cell. Please help me to understand what is wrong.

 

[Informatix]

I have a little sample of the ULV grid, trying to load images from a Sqlite database (base64 image fields), the only problem is that cell layout is loading the same data at each row, instead a different one for each cell. Please help me to understand what is wrong.

I provide no support in this forum. Only via email.

 

[Lello1964]

Hello Informatix, ia have the some problem, can you send me a solution ?
Thanks Raffaele

 

[Informatix]

Hello Informatix, ia have the some problem, can you send me a solution ?
Thanks Raffaele

Please read the message before yours.

 

[Matteo Granatiero]

I have a little sample of the ULV grid, trying to load images from a Sqlite database (base64 image fields), the only problem is that cell layout is loading the same data at each row, instead a different one for each cell. Please help me to understand what is wrong.

i saw this post, were you able to solve?

 

[Informatix]

i saw this post, were you able to solve?

The problem was in the user code.