Handling user settings on file, how?

Android
1

Ok, I created my first APP, it runs on the Virtual and also a Real phone. :slight_smile: Now I added the properties file but it doesn’t get saved or maybe even created. I tried to search the file but couldn’t find it… maybe is the way Android works, so I need to learn that…

PropertiesFile::Options propOptions;
propOptions.applicationName = "7 Segments";
configFile = File(File::getSpecialLocation(File::SpecialLocationType::commonDocumentsDirectory).getFullPathName() + "Seven Segments Settings.xml");
userSettings = new PropertiesFile(configFile, propOptions);
2

To access files outside the sandbox, the app needs to ask for permission using the RuntimePermissions class. On most folders I was using, including userDocumentsDirectory and userMusicDirectory I needed to request RuntimePermissions::writeExternalStorage

I would try different locations, if you can find some inside the app’s sandbox, maybe userApplicationDataDirectory, but I am not an Android expert.

1 Like
3

Oh yeah, thank you so much!

4

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Android is tricky, here is the folder i tried, it seems like w/o success

5

For android and other mobile platforms have a look into the RuntimePermissions class (am on mobile, hence no link… you should be able to find it in the docs)

6

Thank you Daniel, with RuntimePermission and following code, file has been created successfully.
File configFile = File("/sdcard/Download/MySettings.xml");
configFile.create();

7

Interesting!
Could you post the complete (relevant) code?
For me the only folder I could use was the one you’d get with userDocumentsDirectory.

Another question would be:
Do we need to RuntimePermissions::request

  • once during app init
  • each time inside the same scope we want to deal with files
  • on the same thread we want to deal with files later (note the callback is called synchonously once permission was granted)

I’d love to be able to use the download folder… :slight_smile: