Can't write file to SHARED directories on API31 (Android 12)

[TIMAI2]

@rkuba

is it safe in AppInventor to call from within AfterFileSave another save ?

Yes. This ensures that each item in your list is appended to the file and saved before the next item.

@rkuba

it requires use of global variables (counter and buffer) and accessing it implicitly - I want to avoid it as much as possible in my code as it makes any change/debuging extremely difficult and code gets error-prone

Don't see this as an issue. You won't be accessing the file whilst you add items from your list ? Using a counter means it has to be a global variable. Not sure what you mean by buffer ?

@rkuba

What is safe lenght of Text (so that I create veeeeeeery long text having all lines and write it at once) ?

Length of lines in a text file, size of a text file, and size of data stored in a tinydb are generally limited by the storage memory capacity of the device. Others have stored entire books/novels in a single file, and displayed then in a single label.