Android 13 READ Files in Smartwatch

Question

I am developing an application for a Wear OS system that creates a txt file and saves it in a certain folder.

My problem is that I have changed my watch and now the one I'm using has Android 13 API 33 and the permissions I had to save and edit the generated files are not working.

I have found this on internet "Based on the Android documentation READ_EXTERNAL_STORAGE permission has no effect starting from API level 33. For API level 33 and above you can use READ_MEDIA_IMAGES, READ_MEDIA_VIDEO, READ_MEDIA_AUDIO permissions depending on your use case"

None of them are something like READ_MEDIA_FILES o similar

Until now, i used

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"/>

I have this error

`Process: com.XXXX, PID: 27273     java.lang.RuntimeException: Unable to start service com.XXXX.controller.SensorsService@eabe365 with Intent { cmp=com.XXXX/.controller.SensorsService (has extras) }: java.lang.RuntimeException: java.io.FileNotFoundException: /storage/emulated/0/20f91a8a85b2cd47_28-09-23_14-34-09.txt: open failed: EPERM (Operation not permitted)`

do you know what the new permissions are or what I have to do for it?

The use of MANAGE_EXTERNAL_STORAGE has not changed so what is it you are asking? — blackapps
– blackapps, Commented Sep 28, 2023 at 11:44
On the watch (wear os 4) manage_external_storage isn't working anymore... I have, pretty mutch, the same problem — dect
– dect, Commented Sep 28, 2023 at 15:46

1HaKr · Accepted Answer · 2023-10-02 10:52:10Z

3

Storage permissions are broken in Wears OS 4. There is an official bug logged about this. https://issuetracker.google.com/issues/299174252

answered Oct 2, 2023 at 10:52

1HaKr

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Comments

blackapps · Accepted Answer · 2023-09-28 13:01:09Z

-1

You do not need any permission on an Android 13 device to create files in all public directories on external storage.

And certainly also you do not need any READ permission to WRITE a file.

Once you created your file -without needing any permission- you are automatically allowed to read your file.

edited Sep 28, 2023 at 13:01

answered Sep 28, 2023 at 11:42

blackapps

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6 Comments

THORNADOR Over a year ago

so, why i have this error? Process: com.XXXX, PID: 27273 java.lang.RuntimeException: Unable to start service com.XXXX.controller.SensorsService@eabe365 with Intent { cmp=com.XXXX/.controller.SensorsService (has extras) }: java.lang.RuntimeException: java.io.FileNotFoundException: /storage/emulated/0/20f91a8a85b2cd47_28-09-23_14-34-09.txt: open failed: EPERM (Operation not permitted)

blackapps Over a year ago

Well read my answer again. You are not using a public directory.(One that is already there like Documents, DCIM, Pictures, ...).

THORNADOR Over a year ago

In the smartwatch in which the app run without problems, i had this permissions drwxrwx--x, but in the new one, in which the app don´t run, i had this drwxrws--- (drwxrws---" completely denies access to other users). the app I have developed creates a TXT file and continuously writes the accelerometer data, until it finishes and creates a ZIP from the TXT.

blackapps Over a year ago

????? Why are you teling this,? Looks irrelevant to me. Better use a public directory. Now did you try already?

THORNADOR Over a year ago

Do you say to save the file in /storage/emulated/0/Directory? Maybe I am too young developing apps, sorry

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