Read file from phone memory

[Samitha_Dodangoda]

Hi,
I have save a project as copy and did some modification on print section. It has file read block which I didn't modify. when I simulate the app in AI Companion it worked fine (I mean the file read component). but when I install it phone file not reading.

Please note that the unmodified .apk still working properly.

Thanks

Samitha

[RR_Media]

Try reading file from the file's location in your phone's memory

[Samitha_Dodangoda]

Thanks for your reply.
The file is located on root directory of phone memory

Thanks
Samitha

[RR_Media]

So is it your answer?

[NishyanthKumar]

Try copying over the file to another directory (such as Download) and see if it works.

[Anke]

@Samitha_Dodangoda

The file is located on root directory of phone memory

Where does the file (Log.txt) come from?
If it wasn't created by the app itself, you won't be able to read it that way under Android 11+ (you'll need SAF for that). And on Android 11+ you can no longer save non-media files in the root dir of the external storage.

See also here and here.

[Samitha_Dodangoda]

Hi Anke,
Thanks for your reply.
The log.txt file was created by myself & paste it to root directory of internal memory. I used com.sunny.EFile extension for read & append to file. Before I do some modification in other blocks it was worked perfectly. And still working my previous built .apk on android 11. I guess this thing happened after new released of nb187d

Please refer the attached screenshots

Thanks
Samitha

[Anke]

@Samitha_Dodangoda

The log.txt file was created by myself & paste it to root directory of internal memory. I used com.sunny.EFile extension for read & append to file.

As I already said you can no longer list / save non-media files from / in the root dir of any device with Android 11+.
To read those files you need to use SAF.

[Nicola_Imperati]

Anke, come funziona leggere file con android 11 utilizzando SAF? Puoi farmi degli esempi?
Saluti
Nicola

[Anke]

@Nicola_Imperati

how it works, read the file with android 11 using SAF? Can you give me examples?

SAF: App Inventor implementation of Storage Access Framework

@patel Here is a test APK to list / read / delete text files from /Documents with SAF: Copy these files in the folder → /Documents of your test device (before you open the app): file1.txt (19 Bytes) file2.txt (19 Bytes) file3.txt (19 Bytes) test.csv (27 Bytes) Check this app on different devices and Android versions. Video from a Pixel 2XL (Android 11):

Blocks

<a class="lightbox" href="https://community.appinventor.mit.edu/uploads/default/original/3X/d/e/de73a…

[Nicola_Imperati]

Anke,
dove posso scaricare l'estensione SAF?

[Anke]

@Nicola_Imperati

where can I download the extension SAF?

SAF: App Inventor implementation of Storage Access Framework

Probably the writing method. Initial version writes/reads content as string, which works only for text/* files. But v1.1beta enables you to directly write content as byte array. @Anke [image] Here, Label1's text was set to created document's URI i.e. content://com.android.externalstorage.documents/tree/primary%3APictures/document/primary%3APictures%2FCompanion.png. treeUri is content://com.android.externalstorage.documents/tree/primary%3APictures and documentUri is content://com.android…

[Samitha_Dodangoda]

Anke

Could you please send me AIA file or block picture?

[Anke]

@Samitha_Dodangoda

or block picture?

[Nicola_Imperati]

Anke, mentre stavo scrivendo i tuoi blocchi, ho scoperto che un blocco è rinchiuso.
Ti allego l'immagine

[vknow360]

That loop adds document's name to the list since filesList returns content URI.
Search for GetName method in the extension blocks.

[Nicola_Imperati]

E questo è un'altro blocco..

[vknow360]

What did you mean?

[Samitha_Dodangoda]

Could you please show me an example how to read & write a text file? I'm confuse how use SAF Read from file block URI

[vknow360]

Did you check the extension topic? Plenty of examples are present there.

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 Released: 2021-09-16T18:30:00Z (UTC) Last Updated: 2021-09-16T18:30:00Z (UTC) 2.Blocks [image] [image] [image] [image] [image] [image] [image] 3.Documentation Docs for: SAF Events DocumentCreatedEvent invoked after creating document.Returns docum…