File does not exist

[DECOMEDICAL]

Hi,
with the path: / Download / BTDEVICE
the File component read the BTDEVICE file stored in the Download folder of the Tablet without any errors.

After updating android to version
Android 10
Security Patch Level: 01/05/2021
Kernel version: 4.9.205-perf +

FILE NOT EXISTING error is displayed!

I tried with various paths but always the same error ...
how can i solve?
thank you.

[Kaustubh_Rakhade]

Try checking () the legacy mode in the properties of the File component.

If it doesn't work, have a look at this
File Path Updates Starting with Android 10 (Evan's Blog)

or have a look at this topic

Problems with storage, reading and writing files after Android 10

I have created an app that allows me to collect data, which is stored in a CSV file. Prior to the release of Android 10, this CSV file was stored on the eternal storage (/APPNAME/data/filename.csv). The app also exported the file to another location from which it could be downloaded onto my computer. As I understand things, Google have now restricted the ways in which apps are able to read/write to storage outside of the app's specific storage directory and, as such, my app is no longer able to …

[Patryk_F]

I suspect you are using a file to store the name of the BT device you are connecting to? I think a better way to use TinyDb is, it's easier and faster to use than File.

[DECOMEDICAL]

Try checking () the legacy mode in the properties of the File component.

ok work!
thanks

[Anke]

@DECOMEDICAL

I tried with various paths but always the same error

The correct path is this (the File component uses the relative path):

However, this only works under API > 28 if you have enabled LegacyMode as suggested by @Kaustubh_Rakhade.

However, this will no longer work if AI2 targets API 30 (Android 11) → August 2021 (for new apps).

[DECOMEDICAL]

However, this only works under API > 28 if you have enabled LegacyMode as suggested by @Kaustubh_Rakhade....

Is there a different solution so that the app will also work with Android 11?

[Anke]

@DECOMEDICAL

Is there a different solution so that the app will also work with Android 11?

Yes, see e.g. here:

Problem with July 30 2020 Version: nb184 no longer able to write and read files

No, it is written to the app-specific directory (ASD): Companion: /storage/emulated/0/Android/data/edu.mit.appinventor.aicompanion3/files compiled app (APK): /storage/emulated/0/Android/data/<packageName>/files Cause: The file component (for API level ≥ 29) adds the ASD path to the beginning of each path that you declare. If I save a text in the ASD [grafik] this path is returned (but doesn't exist and cannot be created): /storage/emulated/0/Android/data/edu.mit.appinventor.aico…

Save a text file or an image (Canvas) in the ASD & share it on all Android versions

How to save a file (text, Canvas: image) read and share it on all Android versions. [grafik] Note: You cannot share a text file from the → Private dir (internal storage): /data/user/0/<packageName>/files/