What to connect this block to?

MIT App Inventor Help
1

I really can't understand lists_create_with

2

This block initializes the variable as a list or clears an existing list. This is used with a variable.

1 Like
3

Lets take an example -
If you want to make a list of words written in a textbox.
When you write the code, you do not know what will be the input.
So when you will initialize a global variable to create empty list.
Once you get input in a textbox, you can use the add items to list block to update the list of words written in the textbox.

4

Hello Nadja

If you are interested in preventing your hair going gray, spend a day doing the tutorials.

https://appinventor.mit.edu/explore/ai2/tutorials.html

5

A very good way to learn App Inventor is to read the free Inventor's Manual here in the AI2 free online eBook http://www.appinventor.org/book2 ... 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 http://www.appinventor.org/content/CourseInABox/Intro and the aia files for the projects in the book are here: http://www.appinventor.org/bookFiles
How to do a lot of basic things with App Inventor are described here: http://www.appinventor.org/content/howDoYou/eventHandling .

Also do the tutorials Our Tutorials! 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 Taifun.

6

Thanks so much @Taifun! I have been struggling to make lists work! I know how to make and create and add to them, but getting a url from one and making the web viewer go to it has been hard. Thanks!
@Taifun @Nadja_Krzyzanska Also sign up for Mobil Course. It will help with ai2 and others.

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