I have written a Qt app, using Qt 6.6.3 that does something very simple:
display photos (essentially a digital photo frame). I am trying to get it to
run on Android 14. Unfortunately, as simple as this should be, I can not for
the life of me figure out how to get it to request permission to access the
Photos directory - and without that permission, my call to fileDir.entryList
comes up empty - even though, if I call File::exists() with a file I know is in
that directory, it returns true.
Things I have tried (some of which I’m sure are useless):
- add android.permission.READ_EXTERNAL_STORAGE in my AndroidManifest.xml
- add android.permission.ACCESS_MEDIA_LOCATION in my AndroidManifest.xml
- add android:requestLegacyExternalStorage=“true” to the application tag in
AndroidManifest.xml
- different build-tools versions and platform SDK's
- Call the following function with the string
“android.permission.READ_EXTERNAL_STORAGE”:
bool checkPermission(QString permission)
{
auto status = QtAndroidPrivate::checkPermission(permission).result();
if (status == QtAndroidPrivate::Denied)
{
status=QtAndroidPrivate::requestPermission(permission).result();
if (status == QtAndroidPrivate::Denied)
return false;
}
return true;
}
In no case does the app ever ask for permission to access the Photos (or any
other) directory, and in the case of calling that function, requestPermission
immediately returns Denied.
How can I access photos for my app to display?
Qt version: 6.6.3
Android version: 14, running via emulator
Android build-tools version: 34.0.0 (also tried 31.0.0)
Android build platform SDK: android-33 (also tried android-34)
JDK version 17 (tried 21 early on, but that one wouldn’t even build/deploy)
NDK version 25.1.8937393 (26.1.10909125 and 27.0.11902837 don’t create any
kits, so not using them)
Building using Qt Creator version 12.0.2 on MacOS
---
Israel Brewster
Software Engineer
Alaska Volcano Observatory
Geophysical Institute - UAF
2156 Koyukuk Drive
Fairbanks AK 99775-7320
Work: 907-474-5172
cell: 907-328-9145
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