Create file

[Benel Halfon]

Hi :)

How check if file exists?

i tried this:

call File1.ReadFrom
filename "file.txt"

when File1.GotText
do if is empty get text
call File1.Save
text "0"
fileName "file.txt"

But it does not work... :/

[Taifun]

use the Screen.ErrorOccurred block

btw. to read a file from SD card, you have to prefix the filename with a /, see also the documentation

Taifun

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Trying to push the limits of App Inventor! Snippets and Tutorials from Pura Vida Apps by Taifun.         

[Benel Halfon]

Hi Taifun!

thanks for the help!

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1. how i check 2 files exists?

2. how to create dir?

[Benel Halfon]

?

[Taifun]

1. how i check 2 files exists?

just use the provided blocks to check 2 different files, you also can write a procedure and pass the file name as input parameter

first do the tutorials http://appinventor.mit.edu/explore/ai2/tutorials.html to learn the basics of App Inventor, then try something and follow the

 Top 5 Tips: How to learn  App Inventor

2. how to create dir?

How to create a directory