Android Question Asyncstream and UI access

[Addo]

is it safe to access UI such as listview in Newdata available directly ?

i know it is asynchronize i am asking this because i have tried to update UI inside NEWdata

and the phone freeze while adding items to Xcustomelistview i am adding about 100 items

thats how new data looks like

Public Sub NewData (data() As Byte)
  
Dim msg As String

msg = BytesToString(data, 0, data.Length, "UTF-8")

Dim param As String = msg
Dim paramnum() As String = Regex.Split("\~", param)

For i = 0 To paramnum.Length-1
       XVIWLST.Add(CreateListItem(paramnum(i), XVIWLST.AsView.Width, 50dip), paramnum(i))
Next

End Sub

 

[udg]

Please have a look here.
I am not at my PC so I can't help better, sorry.

 

[XbNnX_507]

For i = 0 To paramnum.Length-1
XVIWLST.Add(CreateListItem(paramnum(i), XVIWLST.AsView.Width, 50dip), paramnum(i))
sleep(0) '<- this
Next

 

[Addo]

I read some where here in forum that calling sleep in this matter will not avoid the blocking of the UI and its not useful in this manner

 

[Erel]

is it safe to access UI such as listview in Newdata available directly ?

Yes.

I read some where here in forum that calling sleep in this matter will not avoid the blocking of the UI and its not useful in this manner

That's wrong.

Can you post the code in CreateListItem?

 

[Addo]

sure here is my createlistitem

Dim p As Panel
   p.Initialize("")
   p.SetLayout(0, 0, Width, Height)
   p.LoadLayout("cellitem")
   itemlabel.Text = text
   image1.Bitmap = LoadBitmap(File.DirAssets, "1.png")
   image2.Bitmap = LoadBitmap(File.DirAssets, "2.png")
   image3.Bitmap = LoadBitmap(File.DirAssets, "3.png")
   End If
  
   Return p

 

[Erel]

Creating 100 items shouldn't take more than a few milliseconds.

The first step is to load the bitmaps once and reuse them.

It is covered in the performance tutorial: https://www.b4x.com/etp.html

 

[Addo]

thank you very much now its more clear