As title, would like to create a folder and save files in the SD card. Looked at the external storage : https://www.b4x.com/android/forum/t...access-sd-cards-and-usb-sticks.90238/#content but it needs to start with a manual file selector. May I have an example of how to write a pre-coded address so that the app knows to save in a fixed path (SD card) without a folder picker?
To wite on the External Storage you need to use Runtimepermissions. Once ysou have permission you can create folders, create files. On the external storage (which is an internal SDCard).
But if it must be an USB oder SDCARD than the only way is to use the link you posted. There is NO DIRECT WAY to this storage without the user select the Root-Folder first...