B4J Question Determine the element's parent

[Sergey_New]

To build a tree structure, I ask you to help determine the parent of an element from the list (lst_level).
I need to get something like this:

Spoiler

id level parent_id 1 0 0 2 1 1 3 2 2 4 2 2 5 2 2 6 3 5 7 4 6 8 4 6 9 3 5 10 1 1 11 1 1 12 2 2 13 1 1 14 1 1 15 1 1 16 1 1 17 2 2 18 2 2 19 1 1

An example is attached.

 

[Sagenut]

row(2)=lst_level.IndexOf(lst_level.Get(i))

 

[Sergey_New]

Thank you!
I started looking for StackClass, which I've come across before, but couldn't find it.

 

[Sergey_New]

row(2)=lst_level.IndexOf(lst_level.Get(i))

Can I ask one more question?
If you add several similar lists to this list, for example like the first one, then how should you change your code?
These will be new parents with level=0.

 

[Cableguy]

These will be new parents with level=0.

I don't think you can have more than one level 0 parent... you can however have multiple higher level parents

 

[Sergey_New]

I don't think you can have more than one level 0 parent.

I use a single list of unrelated parents whose level=0.

 

[Cableguy]

I use a single list of unrelated

thus do not belong to the same mainform.root or activity, but are to be childs of them, right? (I'm trying to understand the why!)

 

[Sergey_New]

I'm trying to understand the why!

For understanding, I am attaching a text file. This is a genealogical data format. I need to build a tree view of this entire file.

 

[Cableguy]

Ok, Now I understand... so it is "just" a parsing question...

 

[Sagenut]

For understanding, I am attaching a text file. This is a genealogical data format. I need to build a tree view of this entire file.

Are you trying to make a GEDCOM interpreter?
Because I think that in this case the work it's completely different.
Or will you manage the data in a different way?
Note that I know nothing about these things...... Just discovered now what they are with this thread.

 

[Sergey_New]

Are you trying to make a GEDCOM interpreter?

You think correctly.
I did this in VB.NET over ten years ago.
Now I want to reproduce this code in B4A and B4J.
I did the parsing of the file in B4A in the «Поколения» application. I'm missing the tree view of the file itself.

 

[Sagenut]

Wow!
I checked the link.
Good Job!

 

[Sergey_New]

Thank you for your rating.

 

[Sergey_New]

I managed to establish the parent of the element.

Spoiler

Please help me build the tree. I haven’t figured out how to use recursion to add children.
The project is attached.