B4J Question Determine the element's parent

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Sergey_New

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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:
idlevelparent_id
100
211
322
422
522
635
746
846
935
1011
1111
1222
1311
1411
1511
1611
1722
1822
1911
An example is attached.
 

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  • test.zip
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Sagenut

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B4X: 
row(2)=lst_level.IndexOf(lst_level.Get(i))
 
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Sergey_New

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

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Sagenut said:
row(2)=lst_level.IndexOf(lst_level.Get(i))
Click to expand...
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.
 
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Cableguy

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Sergey_New said:
These will be new parents with level=0.
Click to expand...
I don't think you can have more than one level 0 parent... you can however have multiple higher level parents
 
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Cableguy

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Sergey_New said:
I use a single list of unrelated
Click to expand...
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!)
 
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Sergey_New

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Cableguy said:
I'm trying to understand the why!
Click to expand...
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.
 

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  • Kennedy.zip
    5.4 KB · Views: 100
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Cableguy

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

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Sergey_New said:
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.
Click to expand...
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.
 
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Sergey_New

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Sagenut said:
Are you trying to make a GEDCOM interpreter?
Click to expand...
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.
 
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Sergey_New

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Thank you for your rating.
 
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Sergey_New

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

Attachments

  • GedTree.zip
    27.7 KB · Views: 98
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