Is there any extension or tool for dynamic quiz/exam/survey generation

[ABG]

A small sliding window into a long list can be simple and convenient.
You probably encounter them online.

From my sample collection ...

Button List

Formatting 2 VertialArrangements

Move a scroll bar

Here's an example using your own Canvas as scroll bar. I used a Ball as a cursor, but you could as well have drawn a bar as a thumb instead. Gallery entry: ai2.appinventor.mit.edu/?galleryId=4965345777025024 [blocks] [buttons] [Capture] Color_code_scroller.aia (11.2 KB) [COLUMN] [Designer] [global color_table] [global colorlist] [global listOffset] [global table_text] [global textList] [loadButtonColors] [nudgeBall1] Uploading: when any Button Click.png... Uploading: when btnEnd Click.png... …

Radio buttons:

RadioButtons not working as expected - default selection error

List Pickers make easy radio buttons, no extensions needed. If you like buttons, here is a general purpose setup you can use ... [blocks] [Designer] [global button_groups_dict] [global group_Labels_dict] radio_buttons.aia (3.5 KB) [sample run] [when Any Button Click] Dictionaries and Generic events make this customizable per your taste.

randoms in range ...

Randomize different numbers