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From the List help: List.Initialize2 Method Initializes a list with the given values. This method should be used to convert arrays to lists. Note that if you pass a list to this method then both objects will share the same list, and if you pass an array the list will be of a fixed size. Meaning that
link: This is how I would do it: Log("LIST1 before shuffle: " &lstWords1) lstWords2.Initialize lstWords2.AddAll(lstWords1) lstWords2=ShuffleLis

Tip - List.Initialize2 is never really needed. It is the same as: Dim sheetslist As List = sheets

Check List.Initialize2 documentation: https://www.b4x.com/b4j/help/collections.html#list_initialize2
link: I suspect because List3List is using initialize2 + An Array ' this works List4.Initialize List4.Add("test-2") List4.Add("test-1") List4
link: Pfft. :oops: RTFM Alain, RTFM...
link: https://www.b4x.com/android/forum/threads/b4j-list-removeat-fails-on-list-where-initialize2-used.44027/ :) I'm getting posts late, it seems.

See the documentation of List.Initialize2.
link: My bad :( corect code in UserMarkAsConnected: Else Dim wsList As List wsList.Initialize wsList.Add(ws) ActiveUsers.Put(UserID, wsList) EndIf

Initialize2 (Array As String ("9C3W9QCJ+2VX", "9QCJ+2VX")) shortCodes(7).Initialize2 (Array As String ("9C3W9QCJ+2VX", "9QCJ+2VX")) shortCodes(8).Initialize2 (Array As String ("9C3W9QCJ+2VX", "9QCJ+2VX")) shortCodes(9).Initialize2 (Array As String ("8FJFW222+", "22+")) shortCodes(10)

In one wee word @Albert Kallal , yes...
link: Thank you for that wee bit of advice! I just did not want to start out writing too much code down a bad garden path. A simple question, but I do fee
link: I have this wee bit of code: Dim f As String = "City,FirstName,LastName" ' field list Dim v As List

That's not a bug. In the comments for the Initialize2 method, this is explained. If you pass an Array to this method, then the resulting List will be of fixed size and you can't add or remove items.
link: If you initialize a List using Initialize2 and then you call its method Clear, you get: java.lang.UnsupportedOperationException

Because Initialize2 creates a fixed size list. The same as if you do: Dim l As List = Array("Test","Test") l.Add("Test") You need to do: Dim NewList As List NewList.Initialize NewList.AddAll(PreviousList) NewList.Add(NewValue)
link: Tip: never use List.Initialize2. As @stevel05 wrote you can convert an array to a read-only list directly.
link: Hello I try to add a value to a list, but I get a java.lang.UnsupportedOperationException when I try to do this. Why is this not working? Sub AppSta

JsonGenerator.Initialize2 accepts a List.
link: Now I got something working. Somehow i see it much easier if there is proper json that i can parse in maps. But now I have this root2 list: (ArrayLi

Interesting.... Your reply got me thinking. I was assuming that the list.initialize2 method was basically doing the following, but when I code it explicitly, it works. Changed this: FoundAddresses.Initialize2(Results) To this: If FoundAddresses.IsInitialized Then FoundAddresses.Cle
link: Initialize (EventName As String) Initialize the Geocoder object with the device's system Locale. Initialize2 (EventName As String, Language As String)
link: I get the following error when trying to access the "AddressLines" list of an Address object: java.lang.ClassCastException: uk.co.martinpearman.b4a.lo

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