Android Question [B4X] Treeview Structure with For Each

[Alexander Stolte]

Hey, this question is a general programming question.

My goal is a Treeview Structure.
I have the following Database Structure: id and parent_id

If parent_id = 0 Then it is a root item.

My considerations were a For Each loop

This is just pseudo code:

For Each id in table

If parent_id = 0 then

add item to list

For Each parent_id In id

if id = parent_id then

add item to second level

end if

NExt

End if

Next

How would you solve such an assignment?

 

[Erel]

Are you asking about the UI implementation or about the data structure?

The data structure should be based on a custom type such as this one:

Type TreeElement (Children As List, Value As Object, Parent As TreeElement)

Each element in the Children list is a TreeElement type.