Edit and update data in a listview and TinyDB

MIT App Inventor Help
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1

Greetings forum members, I have managed to have an app for a database of Reference, name and Address. For this I use a listview and save to a TinyDB. I need to be able to Edit and update the information that is on screen 2. Please I would like you to help me in the block that I upload so that you can see it. I thank you in advance and support.

blocks1
blocks11170×1140 148 KB
blocks2
blocks2876×540 55.9 KB
blocks3
blocks3720×234 24.1 KB

Simulating with data I get this error

Error

2

Your logic is very strange. It looks like you are trying to replace an item in a list that does not exist, or if it does, will be replaced by the same item?

Also (even though the blocks are wrong) should TbxNombre.Text be TbxReferencia.Text ?
image

Do you not know where ( which index) these items are already stored ? perhaps you should record their indexes in variables when you first and subsequently save them in order for you to be able to find them again later.

1 Like
3

Thanks for answering my topic

indeed, yes, it was my mistake, it should be TbxReference

I have another block to store the data and it works fine

The list exists well, I save with a block that works ... and yes, I want to be able to edit what I have selected in a listview and that I get it in three textboxes, in that textbox I write the correct thing and then I want it to be corrected

4

Greetings again, this block does edit but only corrects the first record of the 3 data. The second and the others are not modified.

blocks4
blocks41132×984 116 KB

5

This is better.

Without seeing the data it is difficult to understand why lists Nombre and Dir are not being updated?

6

use Do it to debug your blocks, see also tip 4 here App Inventor: How to Learn | Pura Vida Apps
see also Live Development, Testing, and Debugging Tools
Taifun

Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by icon24 Taifun.

7

Thanks TIMAI2 here I upload an example file .aia ..
I still do not know how to upload .aia files in MIT and be placed directly in your MIT
Thanks in advance

DB_EDIT_en_Tiny_ListView_V1.aia (8.5 KB)

8

Thanks I will review

9

Sorry I reference your files,but I found a little problem .
When I add the data and switch to the Scr_VerList.
After if I want add a new data, and the new data will cover the old data.
I don't what happen, can you help me to fix these problem