SAF: App Inventor implementation of Storage Access Framework

patel · October 15, 2021, 6:14am

The app stops

vknow360 · October 15, 2021, 6:24am

Let me tell you the workflow once more.

you open SAF picker
user choose a document or tree
you get the uri
you take persistable uri permission
you do the whatever you wanted

patel · October 15, 2021, 6:28am

[quote="vknow360, post:144, topic:41603"]
When i'm using SAF picker I can read and save my doc.
But I don't want use the picker, I know the uristring, I want read the file directly.
I don't understand if you don't want help me or if you can not help me.

Anke · October 15, 2021, 7:22am

Ok, so you tested with the APK, true?

This is not possible, you must obtain access using ACTION_OPEN_DOCUMENT.
So you cannot read / write from / to it directly.

Anke · October 15, 2021, 7:32am

For me it seems to work also without permissions (with Companion & APK):

Anke · October 15, 2021, 7:49am

In short, you can't use SAF without using one of these blocks:

grafik

To create a new doc, the first block and the CreateDocument (plus TakePersistableUriPermission) block must be used. The second block must be used to read or write to an existing doc (and it seems this is also possible without PersistableUriPermission).

patel · October 15, 2021, 7:56am

I agree with you, maybe it's not possible now without OpenDocument, but I think vknow360 could implement this feature

vknow360 · October 15, 2021, 8:01am

Nope, not possible. You must use one of those picker blocks, at least once.
You can't reach to the roof without climbing stairs.

patel · October 15, 2021, 8:10am

can you explain why ? with opendocument you can get permissions, you know how.

Anke · October 15, 2021, 8:22am

PersistableUriPermissions apply to directories, not documents. When a doc has been opened (picked), it seems you have unrestricted access to it.

Anke · October 15, 2021, 9:10am

I updated my post, #138.

patel · October 15, 2021, 10:37am

it runs well

patel · October 15, 2021, 4:39pm

If to read my text file I have to open the folder and pick the file I might as well use a file browser without making a dedicate app

Anke · October 15, 2021, 4:48pm

If you want to do it without SAF, the text file must either be in one of the shared folders (/Download or /Documents) or in the ASD.

Taifun · October 15, 2021, 8:09pm

3 posts were split to a new topic: How can I read/write my text file in /Documents?

Kumaraswamy · October 17, 2021, 9:00am

Is there any way to use the main folder?
In the companion, it was fine but not in the exported APK.

Anke · October 17, 2021, 10:43am

No.

No, this also doesn't work with Companion on Android 11+ devices.

Kumaraswamy · October 17, 2021, 10:51am

It did work for me in the companion, I was able to choose a file and use the URI.

vknow360 · October 17, 2021, 10:53am

You can choose a file from root folder but you can't choose root folder itself.

Kumaraswamy · October 17, 2021, 10:54am

I don't have enough idea about it...