Bad arguments to remove list item

MIT App Inventor Help
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why its like this
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"What is happening?"
I could ask the same question regarding your blocks.

grafik
(index should be 1, 2, ...)

Please give your topic a meaningful title.

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ok, sorry. but what mean the number of index

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Please elaborate... the index is a number...
If there is a list having the items A, B and C, then the 1st item (index=1) is A, the 2nd item (index=2) is B and the 3rd item is C

Taifun

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okk

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image
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why is it empty

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Which component is NameListDB?
Did you store anything there? How? Your screenshot is incomplete. .

These statements always are true and do not make any sense therefore

Screenshot_20230306_123504_DuckDuckGo
Screenshot_20230306_123504_DuckDuckGo1080×765 114 KB

It looks like it would be a good idea to learn some basics...

A very good way to learn App Inventor is to read the free Inventor's Manual here in the AI2 free online eBook App Inventor 2 Book: Create Your Own Android Apps ... the links are at the bottom of the Web page. The book 'teaches' users how to program with AI2 blocks.
There is a free programming course here Course In A Box and the aia files for the projects in the book are here: App Inventor 2 Book: Create Your Own Android Apps
How to do a lot of basic things with App Inventor are described here: How do you...? .

Also do the tutorials Tutorials for MIT App Inventor to learn the basics of App Inventor, then try something and follow the Top 5 Tips: How to learn App Inventor

Taifun

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

1 Like
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