Android Question List.RemoveAt Problem

[caccas]

Hey all,

Dim filelist As List
Dim strAux As String

filelist = File.ListFiles(File.DirInternal)

For i = 0 To filelist.Size - 1

strAux = filelist.Get(i)
If strAux.IndexOf(".png") < 0 Then
filelist.RemoveAt(i+1)
End If

Next

In the code above when execute filelist.RemoveAt(i+1) i get this error java.lang.UnsupportedOperation Exception.

I can not understand what is happening.

Please help.

Thank you

 

[DonManfred]

Why you want to remove the NEXT item if the actual item is not an .png?
I would say

filelist.RemoveAt(i)

should be correct.

 

[derez]

The problem is that when you remove an item the list changes and there are less items, not the original list.size.
The way to do it is for i = list.size -1 to 0 step -1

 

[DonManfred]

He will run into a ListindexOutOfBounds otherwise, correct.

 

[caccas]

Thank you for your replay, but not work.

Look

For i = filelist.Size - 1 To 0 Step -1

strAux = filelist.Get(i)
If strAux.IndexOf(".png") < 0 Then
filelist.RemoveAt(i-1)
End If

Next

I try RemoveAt with i and i -1 but no work i get same error.

 

[margret]

Instead of removing from filelist, add them to a second List when they match what you are looking for.

 

[caccas]

Thank you margret