Edit csv file strored in the internal storage of the mobile

[tomgodo]

Hello everyone,
I'm trying to develope an aplication that edits a csv file previously stored in the internal storege of the device (NOT the SD).
Unfortunatly I recive the message that the file cannot be found.
What is the right way to right a path?
Thenks a lot.

[TIMAI2]

Start your research here

Some basics on Android storage system

From an Android point of view there are an → Internal Storage and an → External Storage . 1. Internal Storage The Internal Storage can only be accessed with a rooted device. 1.1 The app package is saved in /data/data/<packageName>/ In order to be able to debug your app, AI2 saves the assets for → Companion on devices with Android ≥ 10 (API ≥ 29): /storage/emulated/0/Android/data/edu.mit.appinventor.aicompanion3/files/assets/ Android < 10 : /storage/emulated/0/Android/data/edu.mit…

then come back with a more detailed question...

[Taifun]

Read this Some basics on Android storage system , store the file in shared storage and read it using SAF

SAF: App Inventor implementation of Storage Access Framework

1.Introduction Description: Basically AI2 wrapper of Storage Access Framework. Using this extension, you can get read and/or write access to a single document or tree document (and all of its children recursively). Latest Version: 1.3 Released: 2021-09-16T18:30:00Z (UTC) Last Updated: 2023-11-15T18:30:00Z (UTC) 2.Blocks [image] [image] [image] [image] [image] [image] [image] [image] [image] 3.Documentation Events ErrorOccurred Event indicating error/excep…

Taifun

[patel]

Are you sure you want edit csv file stored in the internal storage ? please be more precise and show your blocks. Documents folder is not in the internal storage.

[tomgodo]

I whant to write an app that aloud me, once I stored a csv file into a specific folder (DOCUMENTS for ex.) in an android mobile, to edite it scanning a barcode and searching the appropriate "cell".
My first step is to open the stored file. Right now, I always recive the message that the file was not found.
I've tried many ways to write the path, but the massage was always the same.

[Anke]

@tomgodo

to edite it

If the CSV file is newly created (saved) on a device running Android 11+ in one of the Shared folders (like /Documents), there should be no access problems. As soon as something is changed (manually) in the file afterwards, it is then a new file that was no longer created by the app itself. Therefore it can only be accessed with SAF on Android 11+.

[patel]

@tomgodo

I've tried many ways to write the path, but the massage was always the same.

You did not show your blocks. Have a look here I cannot save a file in any directory - #21 by patel

[tomgodo]

[Anke]

Try SAF.

[TIMAI2]

Regardless it would be /Documents/TT.csv

[tomgodo]

@TIMAI2

Regardless

How can I get SAF?

[tomgodo]

How can I get SAF?

[TIMAI2]

Already posted once....

SAF: App Inventor implementation of Storage Access Framework

1.Introduction Description: Basically AI2 wrapper of Storage Access Framework. Using this extension, you can get read and/or write access to a single document or tree document (and all of its children recursively). Latest Version: 1.3 Released: 2021-09-16T18:30:00Z (UTC) Last Updated: 2023-11-15T18:30:00Z (UTC) 2.Blocks [image] [image] [image] [image] [image] [image] [image] [image] [image] 3.Documentation Events ErrorOccurred Event indicating error/excep…

[tomgodo]

I sow it.
Do I have to download it?
From where?

[Patryk_F]

Please read at least the first post of the linked topic...

[patel]

We waste time with a developer (?) he doesn't read the recommended documentation and he doesn't show all the code he wrote

[tomgodo]

Well, I'm sory,
I'm new here, a beginner.
May be I'm running to fast, but I need this app.
May be I've missed some very important isues reading what was posted here,
may be I missanderstood other isues, but I can gוarantee that nobody waste time.
Anyway, thenk you all for trying to help me.

[Anke]

Try this:

SAF_readCSV.aia (62.4 KB)

[tomgodo]

Anke,
thenk you vere very much.