Write works on Motorola Android 15 but not on pixel9

[Anke]

@erhard

glad you mentioned that the file should not be used from another app. i did not expect this issue. in the scientific calculator i allow precisely to do that - edit userdefined formulae from within or outside the program - like on the PC and then import it to the phone. so using the SAF has other shortcomings or is it just better to use it in general? does it change the PERMISSION usage?

Since your app is apparently not intended for the Google Play Store, simply request and grant the MANAGE_EXTERNAL_STORAGE permission. This should solve all your storage permission problems.

How to request and grant MANAGE_EXTERNAL_STORAGE permission

In this guide I show you, how to request and grant → MANAGE_EXTERNAL_STORAGE on devices with Android 11+. Be aware that this permission is usually not granted by Google. However, let’s assume the app is only intended for private use or for special users or for other app stores. This permission must be declared in the Manifest (since it is not declared the Companion app you can't test this with Companion): <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"/> Here is a s…

Plus, you won't have to delve into SAF.